Wilson, Frederic H. (ORCID: 0000-0003-1761-6437) Labay, Keith A. (ORCID: 0000-0002-6763-3190) 20250430 Vector and Tabular Digital Data Anchorage, Alaska U.S. Geological Survey, Alaska Science Center Suggested Citation: Wilson, F.H., Labay, K.A., 2025, Data release for the geologic map of the Greater Antilles and Virgin Islands: U.S. Geological Survey data release, https://doi.org/10.5066/P13X7BHY https://doi.org/10.5066/P13X7BHY Geologic map geodatabase depicting the geology of the Greater Antilles and Virgin Islands region, including countries of Cuba, Haiti, Dominican Republic, and Jamaica, and territories of Puerto Rico, the U.S. Virgin Islands, the British Virgin Islands, and the Cayman Islands. Database tables include: geologic linework, dikes, folds, geologic units, and geochronologic data. This dataset was compiled from published literature and has geologic map units integrated across the region. Digital maps may be displayed at any scale or projection, however the geologic data in this dataset is not intended for use at a scale larger than the source compilation maps. This digitized map allows users to accurately view the original map products along with any other geospatial information, filter objects on the map based on chosen criteria, and efficiently perform analyses. The "GreaterAntilles_data_README.pdf" document (included with this data release) provides detailed descriptions of all files. Briefly: this dataset is provided in Esri geodatabase and GeoPackage formats. Standalone tables in these databases that define map sources and geologic unit definitions are also provided in FileMaker Pro and CSV format. The Esri geodatabase is the native format and is described here. The geodatabase contains 7 feature classes, 13 standalone geodatabase tables, and 13 relationship classes that store associations between fields in the feature classes and standalone tables. These include: Feature classes: GAgeol_arc - Polyline feature class containing contacts, faults, and other geologic line types that define polygon boundaries. GAgeol_dike - Polyline feature class containing dikes. GAgeol_fold - Polyline feature class containing folds. GAgeol_struc - Polyline feature class containing seafloor faults. GAgeol_poly - Polygon feature class of mapped geologic units. GA_Radiometric - Point feature class of samples dated using radiometric age techniques. GA_u_pb - Point feature class of samples dated using uranium lead age techniques. Standalone tables: Tables may contain additional information for sources not used in the feature classes. GA_age - Provides geologic age information for each GACLASS value. GA_key - Source of the descriptive unit and symbology information added to the polygons for each GACLASS value. GAlith - Contains lithology information for each GACLASS value. GA_setlist - Provides the settings, and subset setting pick lists for source map units in the GA_setting database, as well as the general and typical lithologic assemblages relative to that setting. GA_setting - Provides data on the geologic setting of map units that are tied to the GAunits database table. GA_SIM_descrip - Ties GACLASS numbers to the more complete unit descriptions associated with the regional geologic map compilations. GAqkey - A secondary lookup table that can be used in to create derivative map products. The key field is GASURF, which only applies to Quaternary units. GArefs - Reference citations for source maps used to build the geologic dataset. The key field is SOURCE. GAunits - Contains name, relative age, descriptions, and rock class information for geologic units documented in sources listed in GArefs. GreatAnt_refs - Reference citations for source maps used to create the geologic, radiometric, and UPb age datasets. The key field is GAREF_ID. IUGSlist - Contains the minimum and maximum ages for every Eon, Era, Period, Epoch, and Age. The age assignments are based on a slight modification of the IUGS 2023. lithform - Contains lithologic-form terms used for lithologic coding of geologic units. Appendix 2 in the pamphlet. lithlist - Contains all the lithologic terms (rock types) used in the lithologic coding. Appendix 1 in the pamphlet. GA_data_dictionary - Describes fields used in the feature classes and other standalone tables. Relationship classes: These are present in the geodatabase only. GAarc_To_GArefs - GAgeol_arc is linked to table GArefs by shared field SOURCE in a one-to-one relationship. GAdike_To_GArefs - GAgeol_dike is linked to table GArefs by shared field SOURCE in a one-to-one relationship. GAfold_To_GArefs - GAgeol_fold is linked to table GArefs by shared field SOURCE in a one-to-one relationship. GApoly_To_GA_age - GAgeol_poly is linked to table GA_age by shared field GACLASS in a one-to-one relationship. GApoly_To_GA_key - GAgeol_poly is linked to table GA_key by shared field GACLASS in a one-to-one relationship. GApoly_To_GA_lith - GAgeol_poly is linked to table GAlith by shared field GACLASS in a one-to-many relationship. GApoly_To_GA_setting - GAgeol_poly is linked to table GA_setting by shared field GACLASS in a one-to-one relationship. GApoly_To_GA_SIM_descrip - GAgeol_poly is linked to table GA_SIM_descrip by shared field GACLASS in a one-to-one relationship. GApoly_To_GAqkey - GAgeol_poly is linked to table GAqkey by shared field GASURF in a one-to-one relationship. GApoly_To_GArefs - GAgeol_poly is linked to table GArefs by shared field SOURCE in a one-to-one relationship. GApoly_To_GAunits - GAgeol_poly is linked to table GAunits by shared field SOURCE_CLASS in a one-to-one relationship. Radiometric_To_GreatAnt_refs - GA_Radiometric is linked to table GreatAnt_refs by shared field GAREF_ID in a one-to-one relationship. UPb_To_GreatAnt_refs - GA_u_pb is linked to table GreatAnt_refs by shared field GAREF_ID in a one-to-one relationship. 2025 publication date Complete None planned -85.0 -64.0 23.7 17.4 USGS Metadata Identifier USGS:68118124d4be0276ecc8c719 ISO 19115 Topic Category GeoScientificInformation USGS Thesaurus Geology Geologic maps Bedrock geologic units Geochronology Radiometric dating USGS Geographic Names Information System (GNIS) Island of Puerto Rico Virgin Islands National Geospatial-Intelligence Agency GEOnet Names Server (GNS) Cuba Hispaniola Haiti Dominican Republic Jamaica Cayman Islands Puerto Rico Virgin Islands British Virgin Islands No access constraints. No use constraints. These data are marked with a Creative Commons Zero v1.0 (CC0-1.0) Universal public domain dedication. It is requested that this USGS data release be cited for any subsequent publications that reference or utilize these data. Users are advised to read the dataset's metadata thoroughly to understand appropriate use and data limitations. U.S. Geological Survey, Alaska Science Center Mailing and Physical

4210 University Drive

Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov Wilson, F.H. Labay, K.A. 2025 map U.S. Geological Survey Scientific Investigations Map (SIM) 3534 online U.S. Geological Survey Wilson, F.H., Labay, K.A., 2025, Geologic map of the Greater Antilles and Virgin Islands: U.S. Geological Survey Scientific Investigations Map 3534, https://doi.org/10.3133/sim3534 https://doi.org/10.3133/sim3534 Wilson, F.H. Orris, G. Gray, F. 2019 map U.S. Geological Survey Open-File Report 2019-1036 online U.S. Geological Survey Wilson, F.H., Orris, G., Gray, F., 2019, Preliminary geologic map of the Greater Antilles and the Virgin Islands: U.S. Geological Survey Open-File Report, https://doi.org/10.3133/ofr20191036 [superseded by USGS Scientific Investigations Map 3534] https://doi.org/10.3133/ofr20191036 Published source maps were used to compile this dataset, and their map scales ranged from 1:20,000 to 1:1,000,000. The maps were georeferenced, then the vector features were digitized on screen. Vectors and polygons were attributed and checked. Topology rules were checked. The geologic data consists of attributed arcs and polygons. Each polygon has a coded attribute designating the mapped geologic unit. Faults, stratigraphic contacts, dikes, and fold axes are represented as arcs. When a fault is also a stratigraphic contact, only a single arc is present. Dangling arcs may be present (fault, dike, or fold). Geochronologic data are represented as points. This dataset consists of arc, polygon, and point features depicting the geology of the islands: Cuba, Isla de la Juventud, Cayman Islands, Jamaica, Hispaniola, Puerto Rico, and Virgin Islands. The dataset also includes many tables which contain additional information and can be linked to either the arc or polygon features. The information in the tables were derived from a set of related Filemaker Pro databases. The native Filemaker database files along with CSV files are also provided with this publication. Data for the islands of Puerto Rico and the Virgin Islands are presented for use at a nominal scale of 1:100,000. Data for the other islands are 1:250,000, depending on the scale of the SOURCE map. Wilson, F.H. Pongratz, A.L. 2024 tabular digital data U.S. Geological Survey Data Release doi:10.5066/P1QGKUBG online U.S. Geological Survey Wilson, F.H., Pongratz, A.L., 2024, Age determinations from various geochronological methods of rock samples in the Greater Antilles and Virgin Islands: U.S. Geological Survey data release, https://doi.org/10.5066/P1QGKUBG https://doi.org/10.5066/P1QGKUBG online 2019 publication date OFR2019-1036 Age determinations from various geochronological methods of rock samples in the Greater Antilles and Virgin Islands, used to inform the map creation. Wilson, F.H. O'Sullivan, P.B. Pongratz, A.L. Zurcher, L. 2024 tabular digital data U.S. Geological Survey Data Release doi:10.5066/P1ZN39XQ online U.S. Geological Survey Wilson, F.H., O'Sullivan, P.B., Pongratz, A.L., Zurcher, L., 2024, U-Pb isotopic data and zircon age determinations from the island of Puerto Rico, United States: U.S. Geological Survey data release, https://doi.org/10.5066/P1ZN39XQ https://doi.org/10.5066/P1ZN39XQ online 2019 publication date OFR2019-1036 U-Pb isotopic data and zircon age determinations data from the island of Puerto Rico, used to inform the map creation. Wilson, F.H. Orris, G. Gray, F. 2019 map U.S. Geological Survey Open-File Report 2019-1036 online U.S. Geological Survey Wilson, F.H., Orris, G., Gray, F., 2019, Preliminary Geologic Map of the Greater Antilles and the Virgin Islands: U.S. Geological Survey Open-File Report, https://doi.org/10.3133/ofr20191036 https://doi.org/10.3133/ofr20191036 online 2019 publication date OFR2019-1036 This publication includes the preliminary geologic map of the Greater Antilles and the Virgin Islands, along with the databases and geospatial data used to create the map. The geology for each of the countries or territories on the map was compiled from published sources. Data capture began in 2016. Spatial data for Cuba, Dominican Republic, Haiti, and Jamaica were supplied under contract prior to this project's initiation. Puerto Rican spatial data was acquired from the cited USGS publication, except for Isla de Mona, Isla de Culebra, and Isla de Vieques, which were hand digitized. Spatial data for the Cayman Islands, and U.S. and British Virgin Islands was hand digitized from materials of various media and scale. The arcs and polygons were attributed, and topology was checked. Data is stored as ESRI geodatabases. 2018 The geologic data from the individual country and territory geodatabases were combined into a single geodatabase. Map units across the region were correlated by age and lithology to show common environments. 2018 Supplemental tables were created from information extracted from the legends of the source maps and from the literature. These tables record map unit descriptions, lithologic and age information, and references. See accompanying readme for detailed description. 2018 In going from OFR 2019-1036 to the present map, new data sources were used for the geology of all of Cuba, Haiti, and Puerto Rico, and parts of the Dominican Republic. The originals used in the OFR may be still cited in the pamphlet. The GIS datasets contain source attributes that link each feature to its source reference. 2020 Additional sample locations were compiled from the literature and added to the radiometric and U/Pb datasets. 2024 Vector Lambert_Conformal_Conic Caribbean_Lambert_Conformal_Conic coordinate pair 0.001 0.001 meters World Geodetic System of 1984 (WGS84) World Geodetic System of 1984 (WGS84) 6378137 298.257223563 GAgeol_poly [FEATURE CLASS] A polygon feature class that identifies the geologic units. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 73771 GA_SYMBOL Numeric value defining symbol color in the wpgcmykg style files used by ArcGIS Pro or QGIS to color the polygons. GA_SYMBOL was populated from table GA_key, linked through field GACLASS. This dataset 8 990 GA_LABEL Map label for the compilation units. GA_LABEL uses special characters for geologic time from the FGDCGeoAge font. Special characters used are "}" for Mesozoic and "<" for Proterozoic. The field was populated from table GA_key, linked through field GACLASS, and then special characters were added. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GA_LABEL2 Map label for the compilation units. GA_LABEL2 uses standard text font and does not use special characters for geologic time. The field was populated from table GA_key, linked through field GACLASS. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset LABEL_COLOR Identifies unit labels that should be colored white on the published map due to dark polygon colors. This dataset WHITE Unit label color is white. This dataset GA_UNITNAME Unit name as used in the Description of Map Units. The field was populated from table GA_key, linked through field GACLASS. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset AGE_RANGE Unit age as used in the Description of Map Units. The field was populated from table GA_key, linked through field GACLASS. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset CLASS Numeric code assigned to each geologic unit in a source map. It is unique for each map unit within a country. This dataset GAunits (provided as geodatabase table, GeoPackage table, and CSV file) This dataset SOURCE SOURCE is a text field in the attribute table. SOURCE identifies the original source map a feature was digitized from. Format is XXX###, where XXX is a three-letter code in capital letters for the country or territory, and ### is a three-digit number, using leading zeros. Field SOURCE is a key field that Links to field SOURCE in table GArefs. This dataset GArefs (provided as geodatabase table, GeoPackage table, and CSV file) This dataset SOURCE_CLASS Concatenated field that identifies a given source map (SOURCE) and geologic unit (CLASS). Field SOURCE_CLASS is a key field that links to field SOURCE_CLASS in table GAunits. This dataset GAunits (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GACLASS Regional numeric code assigned to similar geologic units. GACLASS is a key field and links to field GACLASS in tables GA_age, GA_key, and GAlith. This dataset GA_key(provided as geodatabase table, GeoPackage table, and CSV file) This dataset GASURF Subdivision of attribute GACLASS; provides more detailed Quaternary classification. Field GASURF is a key field for linking to field GASURF in table GAqkey. The value 0 is used for non-Quaternary units. This dataset GAqkey (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GAMOD Indicates if the geology of the polygon or the entire geologic unit in the map area is altered or queried. This dataset {Blank Field Entry} Unit is not altered, contact metamorphosed, or queried. This dataset ALT Hydrothermal alteration, non-specific This dataset ALT-ARG Hydrothermal alteration, argillic This dataset ALT-SER Hydrothermal alteration, sericitic This dataset DZ Zone of disturbed beds This dataset HFS Hornfels or contact metamorphosed, non-specific This dataset HFS, ALT Hornfels or contact metamorphosed, non-specific and hydrothermal alteration, non-specific This dataset HFS-ALB Hornfels or contact metamorphosed, albite facies This dataset HFS-HBL Hornfels or contact metamorphosed, hornblende facies This dataset LAT Laterite alteration This dataset LAT, ALT Laterite alteration and hydrothermal alteration This dataset LAT, ARG Laterite alteration and argillic This dataset LAT, SHR Laterite alteration and fault zone or shear zone This dataset LATQ Laterite alteration queried This dataset LATQ SHR Laterite alteration queried and fault zone or shear zone This dataset Q Queried unit assignment This dataset Q, ALT Queried and hydrothermal alteration This dataset Q, HFS Queried and contact metamorphism, nonspecific This dataset Q, SAP Queried and saprolite alteration This dataset SAP Saprolite alteration This dataset SAP, ALT Saprolite alteration and hydrothermal alteration This dataset SAPQ Saprolite alteration queried This dataset SHR Fault zone or shear zone This dataset GASUB Same coding as GACLASS, but used to define the bedrock unit beneath surficial deposits. Not universally populated. This dataset GA_key(provided as geodatabase table, GeoPackage table, and CSV file) This dataset SEQUENCE Unit order as listed in the Description of Map Units. The field was populated from table GA_key, linked through field GACLASS. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Shape_Length Shape_Length represents the length of the arc in meters as a numeric decimal field in the attribute table. Shape_Length is an internal field created by the software. This dataset 8.29 20983459.5 Shape_Area Shape_Area represents the area of a polygon in square meters as a numeric decimal field in the attribute table. Shape_Area is an internal field created by the software. This dataset 3.09 4549788363362.89 GAgeol_arc [FEATURE CLASS] A line feature class identifying various types of stratigraphic contacts, faults, and other line types. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 199509 LINE_TYPE LINE_TYPE is a text field that describes the numeric value found in ARC_CODE. This dataset See definition for ARC_CODE LINEID LINEID is a text field that identifies major, minor, or extraneous faults and quadrangle boundaries. This dataset BOUNDARY Quadrangle boundary This dataset EXT Extraneous fault with same compilation unit on both sides for entire length This dataset MAJOR Major fault identified based on source map, or length greater than or equal to 20000 meters This dataset MINOR Minor fault with length less than 20000 meters and not a segment of a major fault This dataset LEFT_LABEL Compilation unit on the left side of the line This dataset See polygon attribute GA_LABEL. RIGHT_LABEL Compilation unit on the right side of the line This dataset See polygon attribute GA_LABEL. ARC_CODE ARC_CODE is a numeric short integer field in the attribute table. Values range nonsequentially from 1 to 99. ARC_CODE identifies a stratigraphic boundary, fault, or other linear feature. The ARC_CODE is described by the item LINE_TYPE as listed below. This dataset 1 Stratigraphic contact or intrusive contact, location certain This dataset 2 Stratigraphic contact or intrusive contact, location approximate This dataset 3 Stratigraphic contact or intrusive contact, location inferred, queried This dataset 4 Normal fault, location certain This dataset 5 Normal fault, location approximate This dataset 6 Normal fault, location inferred, queried This dataset 7 Shoreline or riverbank This dataset 8 Internal contact or phase change This dataset 9 Boundary of altered zone or hornfels This dataset 10 Thrust fault, location certain, teeth on right from origin This dataset 11 Thrust fault, location approximate, teeth on right from origin This dataset 12 Thrust fault, location inferred, queried, teeth on right from origin This dataset 14 Caldera or crater rim This dataset 18 Internal contact This dataset 27 Concealed contact through bedrock This dataset 30 Fault, sense of displacement uncertain, location certain This dataset 31 Fault, sense of displacement uncertain, location approximate This dataset 32 Fault, sense of displacement uncertain, location inferred This dataset 34 Terrace, erosional, or wave-cut scarp, water on right from origin This dataset 35 High-angle reverse fault, location certain, teeth on right from origin This dataset 36 High-angle reverse fault, location approximate, teeth on right from origin This dataset 51 Concealed contact This dataset 52 Concealed normal fault This dataset 53 Concealed thrust fault, teeth on right from origin This dataset 54 Concealed high-angle reverse fault, teeth on right from origin This dataset 55 Concealed normal fault, having right lateral oblique slip This dataset 56 Concealed normal fault, having left lateral oblique slip This dataset 57 Concealed right-lateral fault This dataset 58 Concealed left-lateral fault This dataset 59 Concealed shear zone This dataset 60 Concealed fault of uncertain displacement This dataset 71 Normal fault, location certain, having right lateral oblique slip This dataset 72 Normal fault, location approx., having right lateral oblique slip This dataset 73 Normal fault, location certain, having left lateral oblique slip This dataset 74 Normal fault, location approx., having left lateral oblique slip This dataset 75 Normal fault, location inferred, queried, having left lateral oblique slip This dataset 76 Normal fault, location inferred, queried, having right lateral oblique slip This dataset 87 Right lateral fault, location certain This dataset 88 Right lateral fault, location approximate This dataset 89 Right lateral fault, location inferred, queried This dataset 90 Left lateral fault, location certain This dataset 91 Left lateral fault, location approximate This dataset 92 Left lateral fault, location inferred, queried This dataset 95 Shear zone, location approximate This dataset 97 Scratch lines, used where polygons were not closed on source map or limit of mapping This dataset 98 International boundary This dataset 99 Bounding line (neatline) This dataset ARC_PARA1 Used as a modifier for ARC_CODE This dataset 0 No modifier assigned This dataset 1 Upthrown side of fault on right side of line This dataset SOURCE SOURCE is a text field in the attribute table. SOURCE identifies the original source map a feature was digitized from. Format is XXX###, where XXX is a three-letter code in capital letters for the country or territory, and ### is a three-digit number, using leading zeros. Field SOURCE is a key field that Links to field SOURCE in table GArefs. This dataset GArefs (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Shape_Length Shape_Length represents the length of the arc in meters as a numeric decimal field in the attribute table. Shape_Length is an internal field created by the software. This dataset 0.02 9042418.08 [FEATURE CLASS] GAgeol_fold A line feature class showing the locations of mapped folds. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 79 LINE_TYPE LINE_TYPE is a text field that describes the numeric value found in ARC_CODE. This dataset See definition for ARC_CODE ARC_CODE ARC_CODE is a numeric short integer field in the attribute table. Values range nonsequentially from 1 to 99. ARC_CODE identifies a stratigraphic boundary, fault, or other linear feature. The ARC_CODE is described by the item LINE_TYPE as listed below. This dataset 21 Syncline, location certain This dataset 22 Syncline, location approximate This dataset 23 Syncline, location inferred, queried This dataset 24 Anticline, location certain This dataset 25 Anticline, location approximate This dataset 26 Anticline, location inferred, queried This dataset 43 Syncline, overturned, location inferred, queried This dataset 45 Anticline, overturned, location approximate This dataset 46 Anticline, overturned, location inferred, queried This dataset ARC_PARA1 Used as a modifier for ARC_CODE This dataset 0 Fold axis has no plunge This dataset 1 Fold axis mapped as plunging, but angle of dip is unknown This dataset SOURCE SOURCE is a text field in the attribute table. SOURCE identifies the original source map a feature was digitized from. Format is XXX###, where XXX is a three-letter code in capital letters for the country or territory, and ### is a three-digit number, using leading zeros. Field SOURCE is a key field that Links to field SOURCE in table GArefs. This dataset GArefs (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Shape_Length Shape_Length represents the length of the arc in meters as a numeric decimal field in the attribute table. Shape_Length is an internal field created by the software. This dataset 47.39 62494.54 [FEATURE CLASS] GAgeol_dike A line feature class showing the locations of mapped dikes and sills. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 3 LINE_TYPE LINE_TYPE is a text field that describes the numeric value found in ARC_CODE. This dataset See definition for ARC_CODE ARC_CODE ARC_CODE is a numeric short integer field in the attribute table. Values range nonsequentially from 1 to 99. ARC_CODE identifies a stratigraphic boundary, fault, or other linear feature. The ARC_CODE is described by the item LINE_TYPE as listed below. This dataset 50 Dikes and sills This dataset ARC_PARA1 Used as a modifier for ARC_CODE This dataset 0 No modifier assigned This dataset SOURCE SOURCE is a text field in the attribute table. SOURCE identifies the original source map a feature was digitized from. Format is XXX###, where XXX is a three-letter code in capital letters for the country or territory, and ### is a three-digit number, using leading zeros. Field SOURCE is a key field that Links to field SOURCE in table GArefs. This dataset GArefs (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Shape_Length Shape_Length represents the length of the arc in meters as a numeric decimal field in the attribute table. Shape_Length is an internal field created by the software. This dataset 205.71 1822.36 GAgeol_struc [FEATURE CLASS] A line feature class showing major seafloor faults and a spreading center This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 15 Shape_Length Shape_Length represents the length of the arc in meters as a numeric decimal field in the attribute table. Shape_Length is an internal field created by the software. This dataset 34387.66 1433633.03 LINE_TYPE LINE_TYPE is a text field that describes the numeric value found in ARC_CODE. This dataset See definition for ARC_CODE ARC_CODE ARC_CODE is a numeric short integer field in the attribute table. Values range nonsequentially from 1 to 99. ARC_CODE identifies a stratigraphic boundary, fault, or other linear feature. The ARC_CODE is described by the item LINE_TYPE as listed below. This dataset 4 Normal fault, location certain This dataset 10 Thrust fault, location certain, teeth on right from origin This dataset 11 Thrust fault, location approximate, teeth on right from origin This dataset 90 Left lateral fault, location certain This dataset 91 Left lateral fault, location approximate This dataset 92 Left lateral fault, location inferred, queried This dataset 150 Spreading center This dataset ARC_PARA1 Used as a modifier for ARC_CODE This dataset 0 No modifier assigned This dataset 1 Upthrown side of fault on right side of line This dataset SOURCE SOURCE is a text field in the attribute table. SOURCE identifies the original source map a feature was digitized from. Format is XXX###, where XXX is a three-letter code in capital letters for the country or territory, and ### is a three-digit number, using leading zeros. Field SOURCE is a key field that Links to field SOURCE in table GArefs. This dataset GArefs (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GA_Radiometric [FEATURE CLASS] This point feature class is a compilation of radiometric ages found in the literature. The older analytical calculations have been recalculated using modern decay constants. This featureclass contains radiometric age determinations by the following methods: Ar/Ar, K/Ar, Rb/Sr, Re/Os, fission-track and other methods. U/Pb age determinations are in feature class GA_u_pb. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 926 Rec_no Record number is an autogenerated numeric entry from the original database containing unique values. This dataset 6795 8106 Country Name of country or territory in which the dating sample is located. This dataset Antigua Name of country or territory This dataset British Virgin Islands Name of country or territory This dataset Cayman Islands Name of country or territory This dataset Cuba Name of country or territory This dataset Dominica Name of country or territory This dataset Dominican Republic Name of country or territory This dataset Grenada Name of country or territory This dataset Guadeloupe Name of country or territory This dataset Haiti Name of country or territory This dataset Jamaica Name of country or territory This dataset Martinique Name of country or territory This dataset Montserrat Name of country or territory This dataset Offshore Name of country or territory This dataset Puerto Rico Name of country or territory This dataset Saba Name of country or territory This dataset St. Bartholomew Name of country or territory This dataset St. Lucia Name of country or territory This dataset St. Martin Name of country or territory This dataset St. Vincent Name of country or territory This dataset U.S. Virgin Islands Name of country or territory This dataset Sample Sample identification as found in the literature This dataset Numeric, alpha, or alpha numeric string used to identify the sample Rock_type Rock type of the sample dated This dataset A rock type or description of rock type Method Dating method used This dataset 40/39 Argon-argon dating This dataset 40/39 Integrated 40Ar/39Ar integrated age This dataset 40/39 Isochron 40Ar/39Ar isochron age This dataset 40/39 Plateau 40Ar/39Ar plateau age This dataset 40/39 Total fusion 40Ar/39Ar total fusion age This dataset Fission-track Fission-track dating This dataset K/Ar Potassium-argon dating This dataset Lead-alpha Lead-alpha dating This dataset Lu/Hf Lutetium-hafnium dating This dataset Rb/Sr Rubidium-strontium dating This dataset Re/Os Rhenium-osmium dating This dataset Sr isotope Strontium isotope dating This dataset U/He Uranium-helium dating This dataset Mineral Mineral or phase dated This dataset Mineral or phase dated includes: Actinolite, Adularia, Albite, Alunite, Amphibole, Apatite, Barroisite, Biotite, Calcite, Chlorite-biotite, Feldspar, Glaucophane, Groundmass, Hornblende, Illite, Isochron, K-feldspar, Mica, Molybdenite, Muscovite, Paragonite, Phengite, Phlogopite, Plagioclase, Pyrite, Sanidine, Sphalerite, Tektite, Unknown, 'Unknown, whole rock?', White mica, Whole rock, and Zircon. Age Reported age in millions of years This dataset 0.26 918 Ma, million years Error Analytical error in million years for the age calculation, if reported. Null values present. This dataset 0.04 150 Ma, million years Percent_error Analytical error divided by reported age as a percentage. Null values present. This dataset 0.1 96.2 Comment Comments about the sample or analysis This dataset Free text describing the dating sample and/or the analysis. Reference Short reference citations for the age determination. Full reference is available in supplemental tables GArefs and GreatAnt_refs. This dataset Author(s) and year published. Latitude Latitude presented as a decimal value was calculated from Latdeg and Latmin. This dataset 12.02 22.92 degree Longitude Longitude presented as a decimal value was calculated from Longdeg and Longmin, and then multiplied by -1 to plot in the western hemisphere. This dataset -84.93 -60.84 degree Latdeg Degree of latitude of the sample location as found in the literature. Decimal values are present in the database. See Comment field for exceptions. This dataset 12 22.91 degree Latmin Decimal minute of latitude of the sample location as found in the literature. For locations with a decimal value Latdeg, Latmin is 0 (zero). See Comment field for exceptions. This dataset 0.06 59.7 minute Latdir Latitude north or south This dataset N N for north of the equator This dataset Longdeg Degree of longitude of the sample location as found in the literature. Decimal values are present in the database. See Comment field for exceptions. This dataset 60 84 degree Longmin Decimal minute of longitude of the sample location as found in the literature. For locations with a decimal value Latdeg, Latmin is 0 (zero). See Comment field for exceptions. This dataset 0.05 59.9 minute Longdir Longitude east or west This dataset W W for west of the Prime Meridian This dataset Isochron_age 40Ar/39Ar isochron age in million years, if reported. Null values present. This dataset 34 147 Ma, million years Isochron_error Analytical error for the 40Ar/39Ar isochron age in million years, if reported. Null values present. This dataset 0.4 30 Ma, million years Plateau_age 40Ar/39Ar plateau age, if reported. Null values present. This dataset 35.1 903.5 Ma, million years Plateau_error Analytical error for the 40Ar/39Ar plateau age in million years, if reported. Null values present. This dataset 0.1 17 Ma, million years Fusion_age 40Ar/39Ar total fusion age in million years, if reported. Null values present. This dataset 0.26 918 Ma, million years Fusion_error Analytical error for the 40Ar/39Ar total fusion age in million years, if reported. Null values present. This dataset 0 150 Ma, million years Mod_date Date when the database record was last modified This dataset 09/19/2018 01/07/2025 GAclass Interpretation of GAclass (regional geologic unit) determined by the description of the sample and the radiometric age. This may be different than the GAclass of the polygon the dating sample is mapped on. Null values are present. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GAref_ID Numeric code for primary sample reference. Field GAref_ID is a key field for linking to field GAref_ID in table GreatAnt_refs. This dataset GreatAnt_refs (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GAref_ID_All Semicolon delimited list of numeric codes for publications that reference the sample. Values correspond to codes in field GAref_ID in tables GArefs and GreatAnt_refs. May be identical to GAref_ID This dataset GreatAnt_refs (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GA_u_pb [FEATURE CLASS] This point feature class is a compilation of uranium-lead age determinations found in the literature. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 159 Rec_no Record number is an autogenerated numeric entry from the original database containing unique values. This dataset 1448 2200 Country Name of country or territory in which the dating sample is located. This dataset British Virgin Islands Name of country or territory This dataset Cuba Name of country or territory This dataset Dominican Republic Name of country or territory This dataset Gaudeloupe Name of country or territory This dataset Haiti Name of country or territory This dataset Jamaica Name of country or territory This dataset Puerto Rico Name of country or territory This dataset Sample Sample identification as found in the literature This dataset Numeric, alpha, or alpha numeric string used to identify the sample Rock_type Rock type of the sample dated This dataset A rock type or description of rock type. Method Dating method used This dataset LA-ICP-MS Laser ablation inductively-coupled plasma mass spectrometry This dataset MC-LA-ICP-MS Laser Ablation Multi Collector Inductively Coupled Plasma Mass Spectrometry This dataset SHRIMP Sensitive High Resolution Ion Microprobe This dataset TIMS Multigrain Thermal ionization mass spectrometry multi-grain This dataset U/Pb Uranium-lead dating This dataset U/Pb multigrain Uranium-lead multi-grain This dataset Mineral Mineral or phase dated This dataset Mineral or phase dated includes: Sphene, Titanite, Xenocrystals, and Zircon Preferred_age Reported age in millions of years This dataset 30.64 1274 Ma, million years Error Analytical error in million years for the age calculation, if reported. Null values present. This dataset 0.05 17 Ma, million years Percent_error Analytical error divided by reported age as a percentage. Null values present. This dataset 0.1 13.9 Sigma Number of standard deviations of reported analytical error. Null values present. This dataset 1 1 standard deviation This dataset 2 2 standard deviations This dataset Age_type Additional description of the interpreted age or sample. This dataset Average Type of result for preferred age This dataset Concordant fraction Type of result for preferred age This dataset Lower intercept Type of result for preferred age This dataset Single grain Type of result for preferred age This dataset Unknown Type of result for preferred age This dataset Youngest population Type of result for preferred age This dataset Age_event Additional description of the interpreted age. This dataset Crystallization Formation event associated with preferred age This dataset Crystallization, minimum age Formation event associated with preferred age This dataset Inherited? Formation event associated with preferred age This dataset Late fluids Formation event associated with preferred age This dataset Metamorphism Formation event associated with preferred age This dataset Comment Comments about the sample or analysis This dataset Free text describing the dating sample and/or the analysis. Reference Reference citations for the age determination. Full reference is available in supplemental tables GArefs and GreatAnt_refs. This dataset Author(s) and year published. Latitude Latitude presented as a decimal value was calculated from Latdeg and Latmin. This dataset 16.31 22.9 degree Longitude Longitude presented as a decimal value was calculated from Londeg and Lonmin, and then multiplied by -1 to plot in the western hemisphere. This dataset -80.57 -61.05 degree Latdeg Degree of latitude of the sample location as found in the literature. Decimal values are present in the database. See Comment field for exceptions. This dataset 16.0 22.9 degree Latmin Decimal minute of latitude of the sample location as found in the literature. For locations with a decimal value Latdeg, Latmin is 0 (zero). See Comment field for exceptions. This dataset 0.43 59.88 minute Latdir Latitude north or south This dataset N N for north of the equator This dataset Londeg Degree of longitude of the sample location as found in the literature. Decimal values are present in the database. See Comment field for exceptions. This dataset 61.0 80.57 degree Lonmin Decimal minute of longitude of the sample location as found in the literature. For locations with a decimal value Latdeg, Latmin is 0 (zero). See Comment field for exceptions. This dataset 0.58 59.51 minute Londir Longitude east or west This dataset W W for west of the Prime Meridian This dataset F206Pb_238U 206Pb/283U age in million years; null values present This dataset 54.38 1274 Ma, million years F206Pb_238U_error 206Pb/238U age error in million years; null values present This dataset 0.15 18 Ma, million years F207Pb_235U 207Pb/235U age in million years; null values present This dataset 115 206.2 Ma, million years F207Pb_235U_error 207Pb/235U age error in million years; null values present This dataset 0.6 10.4 Ma, million years F207Pb_206Pb 207Pb/206Pb age in million years; null values present This dataset 111.7 309 Ma, million years F207Pb_206Pb_error 207Pb/206Pb age error in million years; null values present This dataset 0.3 35 Ma, million years F208Pb_232Th 208Pb/232Th age in million years This dataset All records are Null because published data has not been found. F208Pb_232Th_error 208Pb/232Th age error in million years This dataset All records are Null because published data has not been found. F206Pb_204Pb 206Pb/204Pb age in million years; null values present This dataset 115.8 115.8 Ma, million years F206Pb_204Pb_error 206Pb/204Pb age error in million years; null values present This dataset All records are Null. Upper_intercept Upper concordia intercept; null values present This dataset 64 2200 Ma, million years Upper_error Upper concordia intercept error; null values present This dataset 0.3 1300 Ma, million years Lower_intercept Lower concordia intercept; null values present This dataset 68.9 172.5 Ma, million years Lower_error Lower concordia intercept error; null values present This dataset 0.3 3.4 Ma, million years Mod_date Date when the database record was last modified This dataset 11/06/2020 11/19/2024 GAclass Interpretation of GAclass (regional geologic unit) determined by the description of the sample and the radiometric age. This may be different than the GAclass of the polygon the dating sample is mapped on. Null values are present. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GAref_ID Numeric code for primary sample reference. Field GAref_ID is a key field for linking to field GAref_ID in table GreatAnt_refs. This dataset GreatAnt_refs (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GAref_ID_All Semicolon delimited list of numeric codes for publications that reference the sample. Values correspond to codes in field GAref_ID in tables GArefs and GreatAnt_refs. May be identical to GAref_ID This dataset GreatAnt_refs (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GA_age [STANDALONE TABLE] Table GA_age provides geologic age information for each GAclass value. Includes composite maximum and minimum age assignments for a given GAclass. A modified version of International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart or radiometric dating was used to determine age attributes. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 225 GAclass Key field to link to GAgeol_poly. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Min_eon The minimum or youngest age assignment for the eon of the unit, based on geologic interpretation. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Min_era The minimum or youngest age assignment for the era of the unit, based on geologic interpretation. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Min_period The minimum or youngest age assignment for the period of the unit, based on geologic interpretation. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Min_epoch The minimum or youngest age assignment for the epoch of the unit, based on geologic interpretation. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Min_age The minimum or youngest age assignment for the age of the unit, based on geologic interpretation. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Full_min Concatenation of fields Min_eon, Min_era, Min_period, Min_epoch, And Min_age. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Max_eon The maximum or oldest age assignment for the eon of the unit, based on geologic interpretation. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Max_era The maximum or oldest age assignment for the era of the unit, based on geologic interpretation. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Max_period The maximum or oldest age assignment for the period of the unit, based on geologic interpretation. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Max_epoch The maximum or oldest age assignment for the epoch of the unit, based on geologic interpretation. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Max_age The maximum or oldest age assignment for the age of the unit, based on geologic interpretation. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Full_max Concatenation of fields Max_eon, Max_era, Max_period, Max_epoch, And Max_age. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Type Defines whether the age assignment is relative, based on stratigraphic position, or absolute, based on radiometric dating. The default value is 'Relative'. This dataset Absolute Age assignment is based on radiometric dating. This dataset Relative Age assignment is based on stratigraphic position. This dataset Cmin_age The most precise minimum age coded; derived from Full_min field. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Cmax_age The most precise maximum age coded; derived from Full_max field. This dataset IUGSlist (provided as geodatabase table, GeoPackage table, and CSV file) International Union of Geological Sciences (IUGS) International Chronostratigraphic Chart Min_Ma Minimum age in millions of years, determined either from IUGS or radiometric dating. This dataset 0 538.8 Ma, million years Max_Ma Maximum age in millions of years, determined either from IUGS or radiometric dating. This dataset 0.01 2500 Ma, million years Age_com A scratch field used by the database creators to keep notes. This dataset Miscellaneous comments; free text Mod_date Date when the database record was last modified This dataset 05/14/2013 11/04/2024 GA_key [STANDALONE TABLE] Lookup table containing labels and colors applied to the map. Also includes a brief description of the geologic unit. Key field is GAclass. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 225 Symbol Numeric value defining symbol color in the wpgcmykg style files used by ArcGIS Pro or QGIS. Identical to GA_symbol except for GAclass values not used in the polygons. This dataset 8 990 Overprint A pattern to place over the polygon fill. Not used for this publication. This dataset 101 574 Label Initial unit label for the GAclass. Superceded by GA_label. This dataset Unit label for each individual GAclass value. Not the final label used on the map sheets or in the pamphlet. GAclass Regional numeric code assigned to similar geologic units. Key field linking to the polygons and other tables. This dataset 99 9421 Description Unit name and age as used in the Description of Map Units. Identical to GA_name except for GAclass values not used in the polygons. This dataset Unit name and age as used in the Description of Map Units. Order_ Order of unit description in the pamphlet and list of map units on map sheet 1. These attributes were added to the polygons in field SEQUENCE. This dataset 1 130 Rank Used to rank subdivisions of a stratigraphic unit. This dataset 1 First order unit This dataset 2 Second order unit This dataset 3 Third order unit This dataset GA_label Map label used on the map sheets and in the pamphlet. Uses standard text font and does not include special characters for geologic time. These attributes were added to the polygons in fields GA_LABEL and GA_LABEL2. Special characters for geologic time were added to GA_LABEL in the polygons. The same label can be used for multiple GAclass values. This dataset Map label used on the map sheets and in the pamphlet. GA_name Unit name and age as used in the Description of Map Units. These attributes were added to the polygons in fields GA_UNITNAME and AGE_RANGE. This dataset Unit name and age as used in the Description of Map Units. GA_symbol Numeric value defining symbol color in the wpgcmykg style files used by ArcGIS Pro or QGIS to color the polygons. Null for GAclass values not used on the maps. These attributes were added to the polygons in field GA_SYMBOL. This dataset 8 990 LMU_name Unit name and age as used in the Description of Map Units. Identical to GA_name except for GAclass values not used in the polygons, or for rank two units where age not listed on map sheet. This dataset Unit name and age as used in the Description of Map Units. GA_lith [STANDALONE TABLE] Table containing lithology information for each GAclass value. GAclass represents a geologic unit, which may consist of several rock types; thus, GAclass to a lithology type is a 1-to-many relationship. Each lithology classification is based on a 5-tier hierarchy coding system and may include a described form. Each lithology has an assigned Rank, which describes the abundance of the rock type within the geologic unit. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 520 Record_no Record number is an autogenerated numeric entry from the original database containing unique values. This dataset 1 4110 GAclass Regional numeric code assigned to similar geologic units. Key field linking to the polygons and other tables. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Lith1 Highest level lithologic classification. This dataset lithlist (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Lith2 Second level lithologic classification. Lith2 is based on value Lith1. This dataset lithlist (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Lith3 Third level lithologic classification. Lith3 is based on value of Lith2 This dataset lithlist (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Lith4 Fourth level lithologic classification. Lith4 is based on value of Lith3. This dataset lithlist (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Lith5 Fifth level lithologic classification. Lith5 is based on value of Lith4. This dataset lithlist (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Form Description of lithologic form. Null fields are present. This dataset lithform (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Rank Indicates how much of the geologic unit this lithology represents. This dataset Incidental Less than 10 percent This dataset Indeterminate, major Abundance of this lithology is not defined. The term 'major' is part of the attribute to insure inclusive searches for major rock types, as rock types listed in the indeterminate category could be a major component of a geologic unit. These may be eliminated from search results by explicitly omitting 'Indeterminate' from the query. This dataset Major Greater than or equal to 33 percent This dataset Minor Between 10 and 33 percent This dataset Percent Optional field containing an estimate of percentage of the geologic unit that this lithology represents. This information is rarely available in the Greater Antilles. This dataset No values are present in this field. Lith_comment Optional field for comments about lithology. Rarely used. This dataset Free text Totallith Concatenation of Lith1, Lith2, Lith3, Lith4, and Lith5. This field allows for queries on any level of the lithologic hierarchy. This dataset Concatenation of values in Lith1, Lith2, Lith3, Lith4, and Lith5. Each is separated by a comma and a space. Lowest Copy of the lith field with the most specific part of the lithologic assignment. This dataset lithlist (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GA_setlist [STANDALONE TABLE] Provides the settings, and subset setting pick lists for source map units in the GA_setting database, as well as the general and typical lithologic assemblages relative to that setting. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 86 Setting Highest level geologic setting classification. This dataset Igneous Igneous rocks This dataset Metamorphic Metamorphic rocks This dataset Sedimentary Sedimentary rocks This dataset Tectonite Tectonite rocks This dataset Unconsolidated Unconsolidated deposits This dataset Undetermined Undetermined This dataset Undivided Undivided This dataset Water Water This dataset Subset1 Second level geologic setting classification. This dataset Second level geologic setting classification based on the selected Setting. Subset2 Third level geologic setting classification. This dataset Third level geologic setting classification based on the selected Subset1. Typical_lith List of rock types typical for this setting. This dataset List of rock types typical for this setting based on the Setting, Subset1, and Subset2 selections. Symbol Numeric value defining symbol color in the wpgcmykg style files used by ArcGIS Pro or QGIS. Identical to GA_symbol except for GAclass values not used in the polygons. This dataset 20 978 Label Unit label associated with the setting. This dataset Null for this table. Setval Numeric value to sort settings and subsets by type. This dataset 1 800 Lithologies General list of rock types associated with the defined setting. This dataset Comma separated list of rock types typical for this setting based on the Setting, Subset1, and Subset2 selections. Meta_lith Metamorphic equivalents of the rock types for the setting. This dataset Metamorphic equivalents of the rock types for the setting based on the Setting, Subset1, and Subset2 selections. GA_setting [STANDALONE TABLE] Provides data on the geologic setting of map units that are tied to the GAunits database table. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 4510 Unit Original source map unit label This dataset Original source map unit label as determined by Source_class Setting Highest level geologic setting classification. This dataset GA_setlist (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Protolith_setting Highest level geologic setting classification of protolith. This dataset GA_setlist (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Subset Second level geologic setting classification. This dataset GA_setlist (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Subset2 Third level geologic setting classification. This dataset GA_setlist (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Source_class Concatenation of SOURCE and CLASS; can be used to find a unit from a single source map. A key field that links to field Source_class in table GAunits. This dataset GAunits (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GAclass Regional numeric code assigned to similar geologic units. Key field linking to the polygons and other tables. This dataset GAkey (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GA_SIM_descrip [STANDALONE TABLE] Ties GAclass numbers to the more complete unit descriptions associated with the regional geologic map compilations. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 212 GA_label Map label used on the map sheets. Uses standard text font and does not include special characters for geologic time. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Unit_name Unit name as used in the Description of Map Units. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Age_range Unit age as used in the Description of Map Units. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Description Full text of unit description as used on the regional map. This dataset Full text description from the pamphlet. GAclass Regional numeric code assigned to similar geologic units. Key field linking to the polygons and other tables. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Lith_type General classification of lithology of unit. This dataset GA_lith (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Sub_type Subclassification of lithology. This dataset GA_lith (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Max_age The maximum or oldest age assignment for the age of the unit, based on geologic interpretation. This dataset GA_age (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Min_age The minimum or youngest age assignment for the age of the unit, based on geologic interpretation. This dataset GA_age (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Order_ Order of unit description in the pamphlet and list of map units on map sheet 1. This dataset 1 126 Rank Used to rank subdivisions of a stratigraphic unit. This dataset 1 First order unit This dataset 2 Second order unit This dataset 3 Third order unit This dataset Mod_date Date when the database record was last modified This dataset 02/09/2018 11/13/2024 GArefs [STANDALONE TABLE] Contains the reference citation for each source map and (or) other publications used. Included in the reference table will be maps that have been digitized, as well as other publications that result in changes to the map. It will also list as "written commun." the source of unpublished information responsible for changes to the map. If a source map covers multiple countries, it will be assigned an identification code for each country covered. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 101 Source Unique code assigned to each source that uses the three-letter country ID and a three-digit number. This dataset Unique code assigned to each source. Reference USGS style reference citation. Also lists written communications where appropriate for modifications to maps. This dataset USGS style reference citation. Refnum A unique tracking number assigned by the database to each reference. This dataset 1 1445 Entered Creation date for the record. This dataset 06/15/2017 08/18/2021 Map_type Type of geology captured by the map. This dataset Bedrock Bedrock map This dataset Bedrock Surficial Bedrock and surficial map This dataset Other Other geologic information This dataset Surficial Surficial map This dataset Surficial Bedrock Surficial and bedrock map This dataset GAref_ID Unique ID assigned in the GreatAnt_refs database. This dataset 10049 10544 Comments Informative notes about the reference, as needed. This dataset Free text Quadrangle USGS quadrangle for Puerto Rico, otherwise is country or territory This dataset Quadrangle, country, or territory name. GAunits [STANDALONE TABLE] Table containing complete description of the geologic unit from the original source map. The description is translated if original description is published in a language other than English. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 4510 Country Country or territory, fully spelled out. If a map covered multiple entities, each of the entities will have a set of entries for the appropriate units from that map in the database. This dataset British Virgin Islands Name of country or territory This dataset Cayman Islands Name of country or territory This dataset Cuba Name of country or territory This dataset Dominican Republic Name of country or territory This dataset Haiti Name of country or territory This dataset Jamaica Name of country or territory This dataset Puerto Rico Name of country or territory This dataset U.S. Virgin Islands Name of country or territory This dataset Unit Geologic unit label from the source map. If a map unit does not have a label a color or descriptive pattern may be entered here. This dataset Geologic unit label from the source map Name Map unit name from the source map. If a map is divided into regions, terranes, or allochthons, etc., or the unit name explicitly mentions stratigraphic divisions, then this information is included in the unit name. This dataset Map unit name from the source map Age Geologic age of the unit as given in the source. This dataset Geologic age of the unit as given in the source Description Complete description of the geologic unit from the original source map. The description is translated if original is published in a language other than English. This dataset Geologic unit description Original_Des Description from the source in native language (Spanish or French). This dataset Description from the source in native language (Spanish or French). Fossils Brief notes on any fossil control mentioned in the unit description. This dataset Brief notes on any fossil control mentioned in the unit description. Radiometric Brief notes on radiometric ages for the unit description. This dataset Brief notes on radiometric ages for the unit description. Source Unique code assigned to each source that uses the three-letter country ID and a three-digit number. This dataset GArefs (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Rock_type General rock classification; Null fields are present. This dataset General rock classification GAmod An item to indicate if unit is altered, contact metamorphosed, contains laterite or saprolite, or has a queried unit assignment This dataset ALT Hydrothermal alteration, non-specific This dataset ALT, Q Hydrothermal alteration, non-specific; Queried This dataset ALT, SAP Hydrothermal alteration, non-specific; Saprolite alteration This dataset ALT, SAPQ Hydrothermal alteration, non-specific; Saprolite alteration; Queried This dataset ALT-ARG Hydrothermal alteration, argillic This dataset ALT-SER Hydrothermal alteration, sericitic This dataset HFS Hornfels or contact metamorphosed, non-specific This dataset HFS-HBL Hornfels or contact metamorphosed, hornblende facies This dataset LAT Laterite alteration This dataset LATQ Laterite alteration; Queried This dataset Q Queried This dataset SAP Saprolite alteration This dataset SAPQ Saprolite alteration; Queried This dataset Class Numeric code assigned to each map unit in a source. It is unique for each map unit within a country. This dataset 10 29016 GAclass Regional numeric code assigned to similar geologic units. Key field linking to the polygons and other tables. This dataset GAkey (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GAsurf Subdivision of attribute GACLASS; provides more detailed Quaternary classification. Field GASURF is a key field for linking to field GASURF in table GAqkey. Null for non-Quaternary units. This dataset GAqkey (provided as geodatabase table, GeoPackage table, and CSV file) This dataset Mod_date Date when the database record was last modified This dataset 08/03/2017 11/12/2024 Source_class Concatenation of Source and Class; can be used to find a unit from a single source map. This dataset Concatenation of Source and Class, separated by an underscore. Source_Class_GAclass Concatenated field that uniquely identifies a given source map (Source), geologic unit (Class), and map unit (GAclass). This dataset Concatenation of Source, Class, and GAclass, separated by underscores. Notes Notes that might apply to a specific source map unit. This dataset Free text GreatAnt_refs [STANDALONE TABLE] Lists the reference citations that are tied to the GArefs, GA_radiometric, and GA_u-pb database tables. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 534 GAref_ID Unique ID assigned in the GreatAnt_refs database. This dataset 10003 10547 Author Authors of the report This dataset Authors of the report Year Year of publication This dataset Year of publication Title Title of publication This dataset Title of publication Publisher Publisher or journal and pages This dataset Publisher or journal and pages Added Creation date of the record This dataset Creation date of the record Ref Concatenated author, year, title and publisher fields in USGS reference format. This dataset Concatenated author, year, title and publisher fields in USGS reference format. Location Location the reference covers This dataset Location the reference covers Subject Subject of reference This dataset Subject of reference Age Geologic age of the unit as given in the source. This dataset Geologic age of the unit as given in the source. Notes Notes than might apply to a specific source map unit. This dataset Notes than might apply to a specific source map unit. Select_ Scratch field to assist in export of references to other programs. This dataset Free text GAqkey [STANDALONE TABLE] A secondary lookup table that can be used in to create derivative map products. The key field is GAsurf, which only applies to Quaternary units, and links to table GAunits and feature class GAgeol_poly. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 38 Symbol Numeric value defining symbol color in the wpgcmykg style files used by ArcGIS Pro or QGIS. This dataset 20 729 Overprint A pattern to place over the polygon fill. Not used for this publication. This dataset 21 139 GAclass Regional numeric code assigned to similar geologic units. Key field linking to the polygons and other tables. This dataset GA_key (provided as geodatabase table, GeoPackage table, and CSV file) This dataset GAsurf Subdivision of attribute GAclass; provides more detailed Quaternary classification. Field GAsurf is a key field for linking to field GAsurf in table GAqkey. Null for non-Quaternary units. This dataset 99 4500 Unit_label Geologic unit labels for each GAsurf code. This dataset Geologic unit labels for each GAsurf code. Geologic_unit Geologic unit names for each GAsurf code. This dataset Geologic unit names for each GAsurf code. Date_added Creation date of the record. This dataset Creation date of the record. IUGSlist [STANDALONE TABLE] Contains the minimum and maximum ages for every Eon, Era, Period, Epoch, and Age. The age assignments are based on a slight modification of the IUGS 2018. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 247 Eon Geologic time; Eon This dataset Archean Archean This dataset Hadean Hadean This dataset Phanerozoic Phanerozoic This dataset Proterozoic Proterozoic This dataset preCambrian preCambrian This dataset preCambrian-Archean preCambrian-Archean This dataset preCambrian-Hadean preCambrian-Hadean This dataset preCambrian-Proterozoic preCambrian-Proterozoic This dataset Era Geologic time; Era This dataset Cenozoic Cenozoic This dataset Eoarchean Eoarchean This dataset Mesoarchean Mesoarchean This dataset Mesoproterozoic Mesoproterozoic This dataset Mesozoic Mesozoic This dataset Neoarchean Neoarchean This dataset Neoproterozoic Neoproterozoic This dataset Paleoarchean Paleoarchean This dataset Paleoproterozoic Paleoproterozoic This dataset Paleozoic Paleozoic This dataset Period Geologic time; Period This dataset Calymmian Calymmian This dataset Cambrian Cambrian This dataset Carboniferous Carboniferous This dataset Cretaceous Cretaceous This dataset Cryogenian Cryogenian This dataset Devonian Devonian This dataset Ectasian Ectasian This dataset Ediacarian Ediacarian This dataset Jurassic Jurassic This dataset Ordovician Ordovician This dataset Orosirian Orosirian This dataset Permian Permian This dataset Quaternary Quaternary This dataset Rhyacian Rhyacian This dataset Siderian Siderian This dataset Silurian Silurian This dataset Statherian Statherian This dataset Stenian Stenian This dataset Tertiary Tertiary This dataset Tertiary-Neogene Tertiary-Neogene This dataset Tertiary-Paleogene Tertiary-Paleogene This dataset Tonian Tonian This dataset Triassic Triassic This dataset Epoch Geologic time; Epoch This dataset Subdivisions of the geologic period. Age Geologic time; Age This dataset Subdivisions of the geologic epoch. Minimum_Ma Minimum age in millions of years. This dataset 0 4031 Maximum_Ma Maximum age in millions of years. This dataset 0.01 4600 Rec_no Record number is an autogenerated numeric entry from the original database containing unique values. This dataset 1 247 Concat Concatenated field including Eon, Era, Period, Epoch, and Age where defined in record. This dataset Concatenated field including Eon, Era, Period, Epoch, and Age where defined in record. Far_right Right most term from Concat field This dataset Right most term from Concat field Mod_date Date when the database record was last modified This dataset 06/29/2022 10/31/2024 lithform [STANDALONE TABLE] Contains lithologic-form terms used for lithologic coding of geologic units. Appendix 2 in the pamphlet. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 76 Lith1 Highest level lithologic classification. This dataset Ice Ice This dataset Igneous Igneous This dataset Metamorphic Metamorphic This dataset Sedimentary Sedimentary This dataset Tectonite Tectonite This dataset Unconsolidated Unconsolidated This dataset Water Water This dataset Lith_form Description of lithologic form. This dataset Description of lithologic form. lithlist [STANDALONE TABLE] Contains all the lithologic terms (rock types) used in the lithologic coding. Appendix 1 in the pamphlet. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 226 Lith1 Highest level lithologic classification. This dataset Ice Ice This dataset Igneous Igneous This dataset Metamorphic Metamorphic This dataset Sedimentary Sedimentary This dataset Tectonite Tectonite This dataset Unconsolidated Unconsolidated This dataset Water Water This dataset Lith2 Second level lithologic classification. Lith2 is based on value Lith1. This dataset Amphibolite Amphibolite This dataset Carbonate Carbonate This dataset Cataclasite Cataclasite This dataset Chemical Chemical This dataset Clastic Clastic This dataset Coal Coal This dataset Coarse-detrital Coarse-detrital This dataset Coral Coral This dataset Eclogite Eclogite This dataset Fine-detrital Fine-detrital This dataset Gneiss Gneiss This dataset Granoblastic Granoblastic This dataset Granulite Granulite This dataset Hydrothermally-altered Hydrothermally-altered This dataset Hypabyssal Hypabyssal This dataset Marl Marl This dataset Melange Melange This dataset Metaigneous Metaigneous This dataset Metasedimentary Metasedimentary This dataset Migmatite Migmatite This dataset Mylonite Mylonite This dataset Peat Peat This dataset Plutonic Plutonic This dataset Schist Schist This dataset Volcanic Volcanic This dataset Lith3 Third level lithologic classification. Lith3 is based on value of Lith2 This dataset Third level lithologic classification. Lith4 Fourth level lithologic classification. Lith4 is based on value of Lith3. This dataset Fourth level lithologic classification. Lith5 Fifth level lithologic classification. Lith5 is based on value of Lith4. This dataset Fifth level lithologic classification. GA_data_dictionary [STANDALONE TABLE] Describes the fields used in the feature classes and other standalone tables. This dataset OBJECTID OBJECTID is a numeric short integer field in the attribute table, and is an internal field created by the software. Values are unique to each item. This dataset 1 283 Table Name of feature class or table This dataset Name of feature class or table Field Feature class and table field names This dataset Feature class and table field names Description Description of field This dataset Free text Minimum Minimum value for numeric fields This dataset Minimum value for numeric fields Maximum Maximum value for numeric fields This dataset Maximum value for numeric fields Units Units for numeric fields when applicable This dataset Units for numeric fields when applicable Source Source of feature class or table This dataset Source of feature class or table U.S. Geological Survey USGS ScienceBase Team Mailing and Physical

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Denver Colorado 80225 USA 1-888-275-8747 sciencebase@usgs.gov The U.S. Geological Survey, Alaska Science Center is the authoritative source of these data, distributed by ScienceBase (a USGS Trusted Digital Repository). Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey, no warranty expressed or implied is made regarding the display or utility of the data for other purposes or on all computer systems, nor shall the act of distribution constitute any such warranty. Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government. CSV, SHP, GDB, FILEMAKER Tabular data in CSV format; FGDC metadata in XML and HTML formats. https://doi.org/10.5066/P13X7BHY None 20250919 U.S. Geological Survey, Alaska Science Center Mailing and Physical

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Anchorage Alaska 99508 USA 907-786-7000 gs-ak_asc_datamanagers@usgs.gov FGDC Content Standard for Digital Geospatial Metadata (CSDGM) FGDC-STD-001-1998