U.S. Geological Survey University of Colorado 2005 1.0 vector digital data https://doi.org/10.3133/ds118 https://pubs.usgs.gov/ds/2005/118/htmldocs/data_cata.htm https://pubs.usgs.gov/ds/2005/118/data/atl_prs.zip J.M. Reid J.A. Reid C.J. Jenkins M.E. Hastings S.J. Williams L.J. Poppe 2005 1.0 Data Series 118 Reston, VA U.S. Geological Survey https://doi.org/10.3133/ds118 https://pubs.usgs.gov/ds/2005/118/ This data layer is a point coverage of known sediment samplings, inspections and probings from the usSEABED data collection and integrated using the software system dbSEABED. This data layer represents the parsed (PRS) output of the dbSEABED mining software. It contains the results of parsing descriptions in the data resources. The PRS data is less precise because it comes from word-based descriptions, but will include information on outsized elements, consolidation that are not usually in EXT data. To build a digital mapping of the character of the seabed on regional, national and global scales. These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information. The usSEABED database is a work-in-progress. Updates will be completed as additional information becomes available, and/or significant changes to the data mining software are completed. 2005 publication date Planned As needed -81.983000 -65.000000 46.086670 23.530000 USGS Metadata Identifier USGS:1f8a3739-63a8-406d-ad4e-765da10020f7 None analyses CMGP Coastal and Marine Geology Program dbSEABED descriptions geology grain size Marine Aggregates Resources and Processes seabed seafloor sediment data texture U.S. Geological Survey USGS usSEABED Woods Hole Science Center University of Colorado Institute of Arctic and Alpine Research Benthic Habitats (Pacific) Project Pacific Science Center (PSC) ISO 19115 Topic Category oceans location geoscientificInformation Coastal and Marine Ecological Classification Standard (CMECS) Marine Nearshore Marine Offshore Estuarine Coastal Lacustrine Continental/Island Shelf Continental/Island Slope Unconsolidated Mineral Substrate Data Categories for Marine Planning distributions sand resources substrate Marine Realms Information Bank (MRIB) Keywords seabed sediment resources sand deposit USGS Thesaurus sea-floor characteristics nonmetallic mineral resources gravel deposits sand deposits None U.S. Atlantic East Coast Atlantic coast East Coast United States Maine New Hampshire Massachusetts Rhode Island Connecticut New York New Jersey Delaware Pennsylvania Maryland Virginia North Carolina South Carolina Georgia Florida Maine Ohio Great Lakes Lake Ontario Lake Erie North America Atlantic Ocean Coastal and Marine Ecological Classification Standard (CMECS) Gulf of Maine/Bay of Fundy Ecoregion Virginian Ecoregion Carolinian Ecoregion Floridian Ecoregion Coastal and Marine Ecological Classification Standard (CMECS) Substrate None Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information. Jeff Williams U.S. Geological Survey Geologist mailing and physical address

384 Woods Hole Road

Woods Hole MA 02543-1598 USA (508) 548-8700 x2383 (508) 457-2310 jwilliams@usgs.gov https://pubs.usgs.gov/ds/2005/118/data/atl_prs.jpg Image map showing extent of data layer coverage JPEG We thank the following interns for their assistance in data entry, coding, and data testing: Viness Ubert, Emma Mitchell, Emily Denham and Shea Quinn. Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.722 Accuracy of each attribute is dependent on the accuracy of the lineage data. Data in usSEABED are based on the observations and analyses of others, filtered through a unifying and mining software. Each source report varies in type of information/data recorded and format. Only those observations that are recorded can be filtered and mined; only presence (not absence) or information can be noted. Additional useable data may exist in this area; the authors appreciate any information and leads. Locational accuracy is dependent on the accuracy of the navigational technique from the individual data sources and may vary widely (e.g., from 0.005km (differential GPS) in more recent surveys to greater than 2 km based on radar, Loran, or dead reckoning in older surveys.) Users of the data should use their own criteria for assessing the accuracy of the locations. Locational accuracy is dependent on the accuracy of the navigational technique from the individual data sources. Users of the data should use their own criteria for assessing the accuracy of the locations. Sourc data are point locations, descriptions and analystical data on many different types of sediment and rock materials and benthos. unknown Edits to the metadata were made to fix any errors that MP v 2.9.36 flagged. This is necessary to enable the metadata to be successfully harvested for various data catalogs. In some cases, this meant adding text "Information unavailable" or "Information unavailable from original metadata" for those required fields that were left blank. Other minor edits were probably performed (title, publisher, publication place, etc.). Fixed a link in the distribution section. Moved the minimal source information provided to a process step. In attributes with range domains, a value of 9999 was entered in the minimum and maximum values to indicate the original metadata did not contain the required information. Minor fixes to the attribute format for some attributes were needed. Attempted to modify http to https where appropriate. The metadata date (but not the metadata creator) was edited to reflect the date of these changes. The metadata available from a harvester may supersede metadata bundled within a download file. Compare the metadata dates to determine which metadata file is most recent. 20170126 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Keywords added to metadata support discovery in the USGS Coastal and Marine Geology Data Catalog. 20180426 U.S. Geological Survey Alan O. Allwardt Contractor -- Information Specialist mailing and physical address

2885 Mission Street

Santa Cruz CA 95060 831-460-7551 831-427-4748 aallwardt@usgs.gov Fixed a broken link and added the DOI link. 20190131 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Added keywords section with USGS persistent identifier as theme keyword. 20200908 U.S. Geological Survey VeeAnn A. Cross Marine Geologist Mailing and Physical

384 Woods Hole Road

Woods Hole MA 02543-1598 508-548-8700 x2251 508-457-2310 vatnipp@usgs.gov Vector Entity point 83832 0.00001 0.00001 Decimal degrees North American Datum of 1983 Geodetic Reference System 80 6378137.000000 298.257222 atl_prs Shapefile Attribute Table ESRI FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. LATITUDE Latitude coordinate of sample location source data 9999 9999 decimal degrees LONGITUDE Longitude coordinate of sample location source data 9999 9999 decimal degrees WATERDEPTH measured water depth for site (usually uncorrected) source data 9999 9999 meters SAMPLETOP measured subbottom depth information for each point sample Information unavailable from original metadata. 9999 9999 meters SAMPLEBASE measured subbottom depth information for each point sample Information unavailable from original metadata. 9999 9999 meters SITENAME Survey or laboratory code for site (non-unique) Information unavailable from original metadata. Information unavailable from original metadata. DATASETKEY Unique sequential numeric key to SRC file dbSEABED processing software Information unavailable from original metadata. SITEKEY Unique sequential numeric key to SRC file dbSEABED processing software Information unavailable from original metadata. SAMPLEKEY Unique sequential numeric key to SRC file dbSEABED processing software Information unavailable from original metadata. SAMPLER Equipment used to collect samples Original data source Information unavailable from original metadata. DATATYPES Type of data that were used to derive values held in characterization Information unavailable from original metadata. ACU Acoustic Properties dbSEABED Data Entry Template CMP Sediment Composition dbSEABED Data Entry Template COL Color dbSEABED Data Entry Template GTC Geotechnical Properties dbSEABED Data Entry Template GRZ Grain Size dbSEABED Data Entry Template TXR Texture dbSEABED Data Entry Template TXG Texture (Graphic) dbSEABED Data Entry Template LTH Lithology dbSEABED Data Entry Template GRAVEL Gravel grainsize fraction Original data source 0 100 percent 1 SAND Sand grainsize fraction Original data source 0 100 percent 1 MUD Mud grainsize fraction Original data source 0 100 percent 1 CLAY Clay grainsize fraction Original data source 0 100 percent 1 GRAINSIZE Phi characteristic grainsize Information unavailable from original metadata. -7.3 12 phi 0.1 SORTING Phi grainsize dispersion; standard deviation sorting only Information unavailable from original metadata. 0 6 phi 0.1 SEABEDCLS Seabed class; (Facies) with the maximum Fuzzy Membership value > 30% dbSEABED processing software Information unavailable from original metadata. CLSMSHP Class membership; fuzzy membership (%) of above Class (Facies) dbSEABED processing software Information unavailable from original metadata. FOLKCODE Grainsize classification Folk, Andrews, and Lewis, 1970 (g)M slightly gravelly mud dbSEABED software, version MNEt (g)mS slightly gravelly muddy sand dbSEABED software, version MNEt (g)sM slightly gravelly sandy mud dbSEABED software, version MNEt (g)S slightly gravelly sand dbSEABED software, version MNEt G gravel dbSEABED software, version MNEt gM gravelly mud dbSEABED software, version MNEt gmS gravelly muddy sand dbSEABED software, version MNEt gS gravelly sand dbSEABED software, version MNEt M Mud dbSEABED software, version MNEt mG muddy gravel dbSEABED software, version MNEt mS muddy sand dbSEABED software, version MNEt msG muddy sandy gravel dbSEABED software, version MNEt S sand dbSEABED software, version MNEt sG sandy gravel dbSEABED software, version MNEt sM sandy mud dbSEABED software, version MNEt SHEPARDCOD Shepard code; grain size classification Information unavailable from original metadata. CLAYEY SILT Sediment that is mostly silt with clay as the next most common component USGS SANDY SILT Information unavailable from original metadata. USGS SAND SILT CLAY Sand with significant (greater than 20 percent) silt USGS SILTY CLAY Sediment that is mostly clay with silt as the next most common component USGS SAND Sediment with greater than 80 percent in the 62 micron to 2 mm fraction USGS SILTY SAND Sediment that is mostly sand with silt (greater than 20 percent) as the next most common component USGS SEDIMENT Information unavailable from original metadata. USGS CLAYEY SAND Information unavailable from original metadata. USGS CLAY Information unavailable from original metadata. USGS SANDY CLAY Information unavailable from original metadata. USGS SILT Information unavailable from original metadata. USGS GRAVELLY SEDIMENT Sediment with greater than 10 percent gravel, but less than 50 percent USGS GRAVEL Information unavailable from original metadata. USGS ROCKMSHP Rock membership; fuzzy membership (%) reflecting percent exposure of rock dbSEABED processing software -99 no data Information unavailable from original metadata. WEEDMSHP Weed membership; fuzzy membership (%) reflecting percent abundance of seaweed and seagrass dbSEABED processing software -99 no data Information unavailable from original metadata. CARBONATE Carbonate, including finest to coarsest sampled fractions Information unavailable from original metadata. Information unavailable from original metadata. MUNSLCODE Munsell color code GSA Rock-Color Chart, 1991 non-unique code based on HVC (Hue, Value, Chroma) ORGCARBON organic carbon in the sample Information unavailable from original metadata. 0 100 percent LGSHEARSTR Undrained compressive shear strength, Log10 of KiloPascals dbSEABED processing software -99 no data dbSEABED software, version MNEt POROSITY Void volume dbSEABED processing software 9999 9999 percent PWAVEVEL Compressional wave velocity dbSEABED processing software 9999 9999 meters/second ROUGHNESS A coded output representing the V:H of the roughness element with greatest aspect ratio dbSEABED processing software 9999 9999 values expressed as (rounded) integer log2 of V and H in cm LGCRSHST Log Critical Shear Stress, Log10 of Tau in kPa, being the Shear Stress required to initiate easily observable erosion and transport, whether by traction or suspension Information unavailable from original metadata. 9999 9999 kPa SAMPLEPHAS Sample Phase; records whether the results are for the whole, bulk sediment or just to some special part dbSEABED processing software 9999 9999 Output as a word-based description that may involve numerics. This field will need to be selected against when GIS mappings of the bulk sedient characters are being mapped. Only blank entries should be included in such a mapping. Values of -99 for any field are indications that there was no data available. U.S. Geological Survey U.S. Geological Survey Brian Buczkowski Core Curator and Data Management Specialist mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543-1598 USA (508) 548-8700 x2361 (508) 457-2310 bbuczkowski@usgs.gov Downloadable Data Although this data set has been used by the U.S. Geological Survey (USGS), no warranty, expressed or implied, is made by the USGS as to the accuracy of the data and/or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials. Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy. ASCII Text file containing data input to usSEABED. Fields are comma separated values. First record of file contains field names. no compression applied 13.3 https://pubs.usgs.gov/ds/2005/118/data/ATL_PRS.TXT https://pubs.usgs.gov/ds/2005/118/htmldocs/data_cata.htm Downloadable thru the WWW SHP Information unavailable from original metadata. ESRI Shapefile The SHP file contains the geospatial data. The SHX file contains the index of the geospatial data. The DBF file contains the attribute data in dBASE format. The PRJ file contains the coordinate system information (optional). The AVL file contains the legend information (optional). The SBN and SBX files contain the spatial index of the geospatial data (optional). The XML file contains the metadata describing the data set <data set name>.shp.xml. An ASCII version of the metadata file. A browse graphic showing the data layer coverage and extent (optional). winzip https://pubs.usgs.gov/ds/2005/118/data/atl_prs.zip https://pubs.usgs.gov/ds/2005/118/htmldocs/data_cata.htm Downloadable thru the WWW None These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, arcexplorer, capable of displaying the data is available from ESRI at www.esri.com. 20211111 U.S. Geological Survey Jamey Reid mailing and physical address

384 Woods Hole Rd.

Woods Hole MA 02543-1598 USA (508) 548-8700 (508) 457-2310 whsc_data_contact@usgs.gov The metadata contact email address is a generic address in the event the metadata contact is no longer with the USGS FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998 local time None None