Data release for Geologic Map of the Leadville North 7.5' quadrangle, Eagle and Lake Counties, Colorado

Chester A. Ruleman Theodore R. Brandt Brent M. Goehring Marc W. Caffee 2018 Data release for Geologic Map of the Leadville North 7.5' quadrangle, Eagle and Lake Counties, Colorado 1.0 Geodatabase, Shapefile, Coverage USGS Data Series, data release 3400 Denver, Colorado U.S. Geological Survey Author ORCID list: Chester A. Ruleman 0000-0002-1503-4591 Theodore R. Brandt 0000-0002-7862-9082 Brent M. Goehring 0000-0001-6405-5156 Marc W. Caffee 0000-0002-6846-8967 http://dx.doi.org/10.5066/F7DR2TRG Chester A. Ruleman Theodore R. Brandt Brent M. Goehring Marc W. Caffee 2018 Geologic Map of the Leadville North 7.5' quadrangle, Eagle and Lake Counties, Colorado 1.0 map USGS Scientific Investigations Map SIM 3400 Denver, Colorado U.S. Geological Survey Author ORCID list: Chester A. Ruleman 0000-0002-1503-4591 Theodore R. Brandt 0000-0002-7862-9082 Brent M. Goehring 0000-0001-6405-5156 Marc W. Caffee 0000-0002-6846-8967 http://dx.doi.org/10.3133/sim3400 The Leadville North 7.5' quadrangle lies at the northern end of the Upper Arkansas Valley, where the Continental Divide at Tennessee Pass creates a low drainage divide between the Colorado and Arkansas River watersheds. In the eastern half of the quadrangle, the Paleozoic sedimentary section dips generally 20–30 degrees east. At Tennessee Pass and Missouri Hill, the core of the Sawatch anticlinorium is mapped as displaying a tight hanging-wall syncline and foot-wall anticline within the basement-cored structure. High-angle, west-dipping, Neogene normal faults cut the eastern margin of the broad, Sawatch anticlinorium. Minor displacements along high-angle, east- and west-dipping Laramide reverse faults occurred in the core of the north-plunging anticlinorium along the western and eastern flanks of Missouri Hill. Within the western half of the quadrangle, Meso- and Paleoproterozoic metamorphic and igneous rocks are uplifted along the generally east-dipping, high-angle Sawatch fault system and are overlain by at least three generations of glacial deposits in the western part of the quadrangle. 10Be and 26Al cosmogenic nuclide ages of the youngest glacial deposits indicate a last glacial maximum age of about 21–22 kilo-annum and complete deglaciation by about 14 kilo-annum, supported by chronologic studies in adjacent drainages. No late Pleistocene tectonic activity is apparent within the quadrangle. Land-use planners of many kinds (including National Forest managers, developers, city and rural planners, and highway builders) need accurate geologic data with which to make informed decisions. The Leadville North quadrangle is designed to meet this requirement. The map is also part of the National Geologic Database, which is intended as digital framework for the entire country. From a scientific standpoint, the map clarifies many structural and lithologic relationships at the northern end of the Upper Arkansas River Valley, showing relationships between Laramide contractional faults and Rio Grande rift extensional faults. Tectono-magmatic relationships are also shown with the four ages of intrusive rocks. Cosmogenic nuclide data provides absolute age constraints on late Pleistocene deposits for further geomorphic and seismotectonic studies. Map political location: Eagle and Lake Counties, Colorado Compilation scale: 1:24,000 Base map used is Leadville North, Colorado of U.S. Geological Survey 2018 publication date Complete none currently planned -106.37500 -106.25000 39.375000 39.250000 AGI Glossary of Geology 10Be, 26Al Laramide Sawatch anticlinorium Rio Grande rift neotectonics cosmogenic nuclide St. Kevin Granite Sawatch Quartzite Dotsero Formation Manitou Dolomite Chaffee Group Leadville Limestone Belden Formation Minturn Formation White Porphyry Group Lincoln Porphyry Hornblende Latite Porphyry Gray porphyry group pre-Bull Lake glaciation Bull Lake glaciation Pinedale Glaciation USGS Metadata Identifier USGS:5a81dc10e4b00f54eb30eb33 U.S. Board of Geographic Names (BGN) Geographic Names Information System (GNIS) USA United States Colorado Eagle County Lake County Upper Arkansas River Upper Arkansas Valley Buckeye Peak Cooper Hill Camp Hale Chicago Ridge No Name Gulch East Fork Arkansas River Eagle River Colorado River Missouri Hill Mount Zion Mosquito Range Sawatch Range South Park Tennessee Pass Tennessee Creek Tennessee Park Turquoise Lake Leadville Leadville Quadrangle Geologic Names Committee Lexicon (Geolex) Holocene Pinedale age Bull Lake age pre-Bull Lake age Quaternary Pleistocene Tertiary Oligocene Eocene Paleocene Cretaceous Pennsylvanian Devonian Ordovician Cambrian Proterozoic Pliocene Miocene Mississippian Mesoproterozoic Paleoproterozoic none Users of this geospatial database and geologic information derived there from should acknowledge the U.S. Geological Survey as the source of the data. Although software enables a user to display images at various scales, map data in this report should not be used at scales larger than 1:24,000. Cal Ruleman U.S. Geological Survey mailing

P.O. Box 25046, MS 980

Denver Federal Center

Denver CO 80225-0046 USA (303) 236-7804 cruleman@usgs.gov http://dx.doi.org/10.3133/sim3400_map Graphical representation of the map PDF Theodore R. Brandt, U.S. Geological Survey, served as primary author of the GIS database. Many thanks for the thoughtful and instructive reviews of Robert M. Kirkham (GeoLogical Solutions, Alamosa, CO), and Jeremiah B. Workman (U.S. Geological Survey). Digital compilation of field and laboratory data was performed by Chester A. Ruleman and Theodore R. Brandt. Windows_10, Intel ArcInfo version 10.4.1 Data were entered and checked by the geologist that made the field observations. The attributes of this geospatial data set consist of text identifiers and numeric codes that indicate the identity of the geologic unit or type of geologic feature, and determine how each feature is colored or symbolized. To check attribute accuracy, a color check plot was visually compared to the geologist's original compilation. Discrepancies between the digital geospatial dataset and the original analog or digital compilation were corrected as needed. Machine-created listings of unique attribute values were used to identify spelling errors or other inconsistencies, and corrections were made as needed. Map elements were visually checked for overshoots, undershoots, duplicate features, polygon closure, and other errors by the lead author and by the GIS technician(s) that created the digital database. Automated (ArcInfo) routines were also used to check the databases for polygon label errors, line or point attribution errors, sliver polygons, dangling arcs, intersection errors, and projection information. Check plots of the map were reviewed by at least one other geologist for consistency with basic geologic principles and general conformity to USGS mapping standards. Data are complete: no features that could be accurately represented at the compilation scale of 1:24,000 were eliminated or generalized. The smallest area represented is approximately 20 square meters. All geospatial database elements are attributed. Most digitized positions on the map that depict distinct contacts between rock formations in the field are estimated to be within 20 m of the actual contact on the land in most instances. Boundaries (lines) between Quaternary units (for example, terrace gravels) that correspond closely to distinct edges of landforms (for example, river terraces) are of comparable accuracy. Boundaries (lines) between some Quaternary units, such as eolian deposits and broad alluvial aprons, are approximately located within an indefinite gradational zone between them. Horizontal positional accuracy is tested by visual comparison of hard copy test plots to source maps or comparing locations of data on a computer monitor to other data layers in the same geographic area. The database contains no elevation data. Accuracy of these digital data indirectly depends on accuracy of the base maps on which the original source geologic maps were compiled. These base maps were made by the U.S. Geological Survey, which routinely checks them for compliance with the National Map Accuracy Standards. Additional point observations were added using positions determined by a Garmin hand-held GPS unit with horizontal accuracy of about 5 meters. Lewis, R.S. Derkey, P.D. 1999 Digital geologic map of part of the Thompson Falls 1:100,000 quadrangle, Idaho U.S. Geological Survey Open File Report OFR 99-438 100000 paper 1999 publication date Lewis and Derkey (1999) GIS database structure source Geology was mapped and compiled during the period 2013-2015. 2018 Miscellaneous Investigations Series Map I-830, Geologic Map and Sections of the Holy Cross Quadrangle, Eagle, Lake, Pitkin, and Summit Counties, Colorado By Ogden Tweto, digital edition and database by Theodore R. Brandt formed the starting point for digital compilation of the bedrock geology within the quadrangle. Brandt extracted geologic features occurring within the Leadville North quadrangle and merged new geologic mapping by Ruleman into the GIS database. 2018 Tunnel, caved tunnel, shaft, and prospect pit or shallow shaft locations were revised where needed by Brandt in ArcGIS utilizing NAIP imagery, and lidar-derived imagery. 2018 Geologic polygon, line, and point features were attributed and revised in ArcGIS utilizing NAIP imagery, and lidar-derived imagery. 2018 Metadata created by Ted Brandt. 2018 Metadata reviewed by Anya Hess and Lisa Binder. 2018 Metadata reviewed and revised by Ted Brandt. 2018 Vector Universal Transverse Mercator 13 .9996 -105.0000 0.00 500000.0000 0.0000 coordinate pair 5 5 METERS North American Datum of 1927 Clarke 1866 6378206.4 294.98 The data are supplied in ArcInfo export format, ArcView shapefile format, and ArcGIS geodatabase format. DATABASE STRUCTURE - ArcInfo ==================================== This GIS database includes related look-up tables, which store detailed attribute information. This database structure is more fully described in USGS OFR 99-438 (Lewis and Derkey, 1999). The GIS database structure used in the database includes symbol and pattern items in coverage point, polygon (PAT), and arc (AAT) attribute tables for user convenience. ArcInfo relates for each coverage are saved in a file named <covername>.rel. Use the RELATE command with the restore argument at the arc prompt to make the relates active. Alternatively, in ArcTools, use the Relate environment: open dialog in the Manage Relates flyout menu under the ArcTools menu to make the relates active. lngeo coverage: Contains all contact lines and label points for each geologic polygon. In the .pat INFO file the SOURCE item provides a numeric code used to identify the data source for the rock unit. Complete references for the sources listed are listed in the lngeo.ref file. The LABEL item indicates the rock unit label (abbreviation) used to label unit on map. The MLABEL item indicates the rock unit label from the FGDCGeoAge font, using geologic age letter symbols associated with the age of the lithologic units (for example: Triassic, Pennsylvanian, Cambrian). The DESC item defines formal or informal unit name. The SYMBOL item contains the shadeset symbol number used by ArcInfo to plot a filled/shaded polygon. The symbol numbers in this item refer to the wpgcmykg.shd shadeset included with the dataset. The PATTERN item contains the pattern number used in the published version of the map. Patterns that correspond with the pattern numbers are displayed in Federal Geographic Data Committee document no. FGDC- STD-013-2006, rev. 2010. There is no ArcInfo shadeset that corresponds to these patterns. In the lngeo.aat INFO file, the LINECODE item provides a numeric Code used to identify type of linear feature. Linecodes less than 100 are used for contacts and boundaries that are described in the lngeo.con file. Linecodes greater than 100 are used for structures that are described in the lngeo.str file. The NAME item lists the name given to the structural feature. The SOURCE item lists the numeric code used to identify the data source for the linear feature. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin lineset). Complete references for the sources are listed in the lngeo.ref file. Related look-up table files are lngeo.con, lngeo.str, and lngeo.ref. In the lngeo.con INFO file, the LINECODE item indicates the numeric code (a value less than 100) used to identify type of contact or boundary. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin lineset included with the dataset). The TYPE item lists the major type of line (for example, contact, State boundaries, lines of latitude and longitude used for neatlines). The MODIFIER item lists the line type modifier (that is, approximate, concealed, or gradational). No entry implies 'known.' The CERTAINTY item lists the degree of certainty of contact or boundary (that is, inferred or uncertain). No entry implies 'certain.' The DESC item lists the written description or explanation of the contact or boundary. In the lngeo.str INFO file, the LINECODE item indicates the numeric code (a value greater than 100) used to identify type of structure. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin lineset included with the dataset). The TYPE item lists the major type of line (for example, fault or fold-axis). The HORIZONTAL item refers to the type of horizontal fault movement (for example, left-lateral or right-lateral). No entry implies 'unknown' or no strike-slip movement. The VERTICAL item refers to the type of vertical fault movement (for example, normal). No entry implies 'unknown' or no dip-slip movement. The FOLD item refers to the type of fold (for example, anticline or syncline). The PLUNGE item refers to the type of plunge on fold (that is, horizontal, plunging, plunging in, or plunging out). The ACCURACY item refers to the line type modifier indicating degree of accuracy (that is, approximately located, concealed, gradational). No entry implies 'certain.' The CERTAINTY item lists the degree of certainty of structure (that is, inferred, uncertain). No entry implies 'certain.' The DESC item lists the written description or explanation of the structure. The INFO structure of these files is listed below: >LNGEO.PAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 LNGEO# 4 5 B - > 21 LNGEO-ID 4 5 B - > 25 SOURCE 2 5 B - > 27 LABEL 10 10 C - > 37 MLABEL 10 10 C - > 47 DESC 250 250 C - > 297 SYMBOL 4 10 B - > 301 PATTERN 4 10 B - >LNGEO.AAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 FNODE# 4 5 B - > 5 TNODE# 4 5 B - > 9 LPOLY# 4 5 B - > 13 RPOLY# 4 5 B - > 17 LENGTH 8 18 F 5 > 25 LNGEO# 4 5 B - > 29 LNGEO-ID 4 5 B - > 33 LINECODE 2 5 B - > 37 NAME 150 150 C - > 187 SOURCE 4 10 B - > 191 SYMBOL 4 10 B - >LNGEO.CON: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 LINECODE 3 3 I - > 4 SYMBOL 3 3 I - > 7 TYPE 10 10 C - > 17 MODIFIER 20 20 C - > 37 CERTAINTY 15 15 C - > 52 DESC 100 100 C - >LNGEO.STR: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 LINECODE 3 3 I - > 4 SYMBOL 3 3 I - > 7 TYPE 10 10 C - > 17 HORIZONTAL 20 20 C - > 37 VERTICAL 20 20 C - > 57 FOLD 15 15 C - > 72 PLUNGE 15 15 C - > 87 ACCURACY 15 15 C - > 102 CERTAINTY 15 15 C - > 117 DESC 100 100 C - > LNGEO.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - lnlscarp coverage: Contains landslide scarp lines In the lnlscarp.aat INFO file, the LINECODE item provides a numeric code used to identify the type of linear feature. Linecodes are used for structures that are described in the lnlscarp.str file. The NAME item lists the name given to the structural feature. The SOURCE item lists the numeric code used to identify the data source for the linear feature. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin lineset). Complete references for the sources are listed in the lnlscarp.ref file. Related look-up table files are lnlscarp.str, and lnlscarp.ref. In the lnlscarp.str INFO file, the LINECODE item indicates the numeric code (a value greater than 100) used to identify type of structure. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line(symbol numbers refer to the geol_sfo.lin lineset included with the dataset). The TYPE item lists the major type of line (for example, fault or fold- axis). The HORIZONTAL item refers to the type of horizontal fault movement (for example, left-lateral or right-lateral). No entry implies 'unknown' or no strike-slip movement. The VERTICAL item refers to the type of vertical fault movement (for example, normal). No entry implies 'unknown' or no dip-slip movement. The FOLD item refers to the type of fold (for example, anticline or syncline). The PLUNGE item refers to the type of plunge on fold (that is, horizontal, plunging, plunging in, or plunging out). The ACCURACY item refers to the line type modifier indicating degree of accuracy (that is, approximately located, concealed, gradational). No entry implies 'certain.' The CERTAINTY item lists the degree of certainty of structure (that is, inferred, uncertain). No entry implies 'certain.' The DESC item lists the written description or explanation of the structure. >LNLSCARP.AAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 FNODE# 4 5 B - > 5 TNODE# 4 5 B - > 9 LPOLY# 4 5 B - > 13 RPOLY# 4 5 B - > 17 LENGTH 8 18 F 5 > 25 LNLSCARP# 4 5 B > 29 LNLSCARP-ID 4 5 B - > 33 LINECODE 4 10 B - > 37 NAME 150 150 C - > 187 SOURCE 4 10 B - > 191 SYMBOL 4 10 B - > >LNLSCARP.STR: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 LINECODE 3 3 I - > 4 SYMBOL 3 3 I - > 7 TYPE 10 10 C - > 17 HORIZONTAL 20 20 C - > 37 VERTICAL 20 20 C - > >LNLSCARP.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - lnxc coverage: Contains cross-section lines In the lnxc.aat INFO file, the LINECODE item provides a numeric code used to identify type of linear feature. Linecodes less than 100 are used for contacts and boundaries that are described in the lnxc.con file. The NAME item lists the name given to the structural feature. The SOURCE item lists the numeric code used to identify the data source for the linear feature. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin lineset). Complete references for the sources are listed in the lnxc .ref file. Related look-up table files are lnxc.con, and lnxc.ref. In the lnxc.con INFO file, the LINECODE item indicates the numeric code (a value less than 100) used to identify type of contact or boundary. The SYMBOL item lists the line symbol number used by ArcInfo to plot the line (symbol numbers refer to the geol_sfo.lin lineset included with the dataset). The TYPE item lists the major type of line (for example, contact, State boundaries, lines of latitude and longitude used for neatlines). The MODIFIER item lists the line type modifier (that is, approximate, concealed, or gradational). No entry implies 'known.' The CERTAINTY item lists the degree of certainty of contact or boundary (that is, inferred or uncertain). No entry implies 'certain.' The DESC item lists the written description or explanation of the contact or boundary. >LNXC.AAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 FNODE# 4 5 B - > 5 TNODE# 4 5 B - > 9 LPOLY# 4 5 B - > 13 RPOLY# 4 5 B - > 17 LENGTH 8 18 F 5 > 25 LNXC# 4 5 B > 29 LNXC-ID 4 5 B - > 33 LINECODE 4 10 B - > 37 NAME 150 150 C - > 187 SOURCE 4 10 B - > 191 SYMBOL 4 10 B - > > LNXC.CON: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 LINECODE 3 3 I - > 4 SYMBOL 3 3 I - > 7 TYPE 10 10 C - > 17 MODIFIER 20 20 C - > 37 CERTAINTY 15 15 C - > 52 DESC 100 100 C - > >LNXC.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - lnpts coverage: Contains points recording site-specific observations and measurements, such as strike and dip of bedding In the lnpts.pat INFO file, the PTTYPE item lists the type of Point symbol (for example, strike and dip of inclined bedding). The SYMBOL item lists the marker symbol used by ArcInfo to identify the type of structural map symbol(symbol numbers refer to the geoscamp2.mrk markerset). The STRIKE item contains the strike of bedding as well as bearing of lineation or trend of fold axis, where applicable. Strike is an azimuthal angle. Measured in degrees from 0 to 360 in a clockwise direction from North, the STRIKE value also specifies the dip direction, where the dip direction is 90 degrees clockwise relative to the STRIKE. The DIP item contains the dip of bedding as well as plunge angles, where applicable. This value is an angle measured (in degrees from 0 to 90) down from the horizontal; thus a horizontal dip is 0 degrees and a vertical dip is 90 degrees. The SOURCE item lists the numeric code used to identify the data source. In the lnpts.ref INFO file, the SOURCE item lists the numeric code used to identify the data source. The SCALE item lists the scale of the source map. (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.) The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial. The YEAR item lists the source (map) publication date. The REFERENCE item lists the remainder of the reference in USGS reference format. >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 LNPTS# 4 5 B - > 21 LNPTS-ID 4 5 B - > 25 PTTYPE 100 100 C - > 125 SYMBOL 4 10 B - > 129 STRIKE 4 10 B - > 133 DIP 4 10 B - > 137 SOURCE 4 10 B - > >LNPTS.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - lnpta coverage: Contains points recording site-specific observations and measurements of lineation, such as inclined lineation. In the lnpta.pat INFO file, the PTTYPE item lists the type of point symbol (for example, strike and dip of inclined bedding). The SYMBOL item lists the marker symbol used by ArcInfo to identify the type of structural map symbol(symbol numbers refer to the geoscamp2.mrk markerset). The STRIKE item contains the strike of bedding as well as trend of fold axis, where applicable. Strike is an azimuthal angle. Measured in degrees from 0 to 360 in a clockwise direction from North, the STRIKE value also specifies the dip direction, where the dip direction is 90 degrees clockwise relative to the STRIKE. The DIP item contains the dip of bedding as well as plunge angles, where applicable. This value is an angle measured (in degrees from 0 to 90) down from the horizontal; thus a horizontal dip is 0 degrees and a vertical dip is 90 degrees. The SOURCE item lists the numeric code used to identify the data source. In the lnpta.ref INFO file, the SOURCE item lists the numeric code used to identify the data source. The SCALE item lists the scale of the source map. (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.) The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial. The YEAR item lists the source (map) publication date. The REFERENCE item lists the remainder of the reference in USGS reference format. >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 LNPTA# 4 5 B - > 21 LNPTA-ID 4 5 B - > 25 PTTYPE 100 100 C - > 125 SYMBOL 4 10 B - > 129 STRIKE 4 10 B - > 133 DIP 4 10 B - > 137 SOURCE 4 10 B - > >LNPTA.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - lnptd coverage: Contains points recording site-specific observations and measurements of drill holes. In the lnptd.pat INFO file, the PTTYPE item labels the points as Drill hole - Depth to top of rock unit and total depth (TD) indicated in feet. The SYMBOL item lists the point symbol number used by ArcInfo to plot the point (symbol numbers refer to the geoscamp2.mrk markerset). The RU1FT item lists the first rock unit label and depth in feet. The RU2FT item lists the second rock unit label and depth in feet (if present). The TDFT item lists the TD label and total depth in feet of the drill hole. The SOURCE item lists the numeric code used to identify the data source. In the lnptd.ref INFO file, the SOURCE item lists the numeric code used to identify the data source. The SCALE item lists the scale of the source map. (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.) The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial. The YEAR item lists the source (map) publication date. The REFERENCE item lists the remainder of the reference in USGS reference format. >LNPTD.PAT: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 LNPTD# 4 5 B - > 21 LNPTD-ID 4 5 B - > 25 PTTYPE 100 100 C - > 125 SYMBOL 4 10 B - > 130 RU1FT 20 20 C - > 150 RU2FT 20 20 C - > 170 TDFT 20 20 C - > 190 SOURCE 4 10 B - >LNPTD.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - lnptps coverage: Contains points recording site-specific observations and measurements of depth to formation observed in shaft in feet. In the lnptps.pat INFO file, the PTTYPE item labels the points as Depth to formation- Indicated by formation label and depth in feet. The SYMBOL item lists the point symbol number used by ArcInfo to plot the point (symbol numbers refer to the geoscamp2.mrk markerset. The RUFT item lists the rock unit label and depth in feet. The SOURCE item lists the numeric code used to identify the data source. In the lnptps.ref INFO file, the SOURCE item lists the numeric code used to identify the data source. The SCALE item lists the scale of the source map. (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.) The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial. The YEAR item lists the source (map) publication date. The REFERENCE item lists the remainder of the reference in USGS reference format. >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 LNPTPS# 4 5 B - > 21 LNPTPS-ID 4 5 B - > 25 PTTYPE 100 100 C - > 125 SYMBOL 4 10 B - > 129 RUFT 20 20 C - > 149 SOURCE 4 10 B - > >LNPTPS.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - lncosmo coverage: Contains points recording cosmogenic age sites and associated data. In the lncosmo.pat INFO file, the SAMPLE item list the field sample identification number. The ELEVFEET item lists the elevation in in feet at the sample site location. The SAMPLEDESC item lists the rock type and geomorphic description of the sample site. The AZ0 to AZ345 items list for each azimuthally labeled item the shielding angle of topographic obstructions to cosmic-ray radiation represented in vertical degrees from the geoidal horizon to the apparent horizon (skyline). The PTTYPE item lists the item lists the type of point symbol (for example, cosmogenic age site). The AGE item list the cosmogenic age in thousands of years (ka). The SYMBOL item lists the point symbol number used by ArcInfo to plot the point (symbol numbers refer to the geoscamp2.mrk markerset. The SOURCE item lists the numeric code used to identify the data source. In the lncosmo.ref INFO file, the SOURCE item lists the numeric code used to identify the data source. The SCALE item lists the scale of the source map. (This value is the denominator of the proportional fraction that identifies the scale of the map that was digitized or scanned to produce the digital map.) The AUTHORS item lists the author(s) or compiler(s) of source map entered as last name, first name or initial, and middle initial. The YEAR item lists the source (map) publication date. The REFERENCE item lists the remainder of the reference in USGS reference format. >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 AREA 8 18 F 5 > 9 PERIMETER 8 18 F 5 > 17 LNCOSMO# 4 5 B - > 21 LNCOSMO-ID 4 5 B - > 279 SAMPLE 254 254 C - > 533 ELEVFEET 5 5 B - > 538 SAMPLEDESC 254 254 C - > 792 AZ0 5 5 B - > 797 AZ15 5 5 B - > 792 AZ30 5 5 B - > 802 AZ45 5 5 B - > 807 AZ60 5 5 B - > 812 AZ75 5 5 B - > 817 AZ90 5 5 B - > 822 AZ105 5 5 B - > 827 AZ120 5 5 B - > 832 AZ135 5 5 B - > 837 AZ150 5 5 B - > 842 AZ165 5 5 B - > 792 AZ180 5 5 B - > 847 AZ195 5 5 B - > 852 AZ210 5 5 B - > 857 AZ225 5 5 B - > 862 AZ240 5 5 B - > 867 AZ255 5 5 B - > 872 AZ270 5 5 B - > 877 AZ285 5 5 B - > 882 AZ300 5 5 B - > 887 AZ315 5 5 B - > 892 AZ330 5 5 B - > 897 AZ345 5 5 B - > 902 SOURCE 2 5 B - > 904 PTTYPE 100 100 C - > 1004 SYMBOL 2 5 B - > 1006 AGE 255 255 C - > >LNCOSMO.REF: > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 SOURCE 4 4 I - > 5 SCALE 8 8 I - > 13 AUTHORS 200 200 C - > 213 YEAR 4 4 I - > 217 REFERENCE 250 250 C - lnhlsd grid: Contains hillshade values derived from U.S. Geological Survey National Elevation Dataset (NED) 10 meter resolution elevation data downloaded on 3-15-16. The grid is included for GIS data users needing a hillshade of this resolution for the entire map area. The grid's projection is the same UTM zone 13 NAD27 datum projection used for the geologic database coverages. The illumination angle for the hillshade's shaded relief grid was generated at an azimuth of 315 degrees and horizon angle of 45 degrees. In the integer grid's lnhlsd.vat INFO file, the VALUE item lists integer values that describe the illumination level of a cell or group of cells forming a zone. The COUNT item list the number of cells in a zone. In the grid's lnhlsd.sta INFO file, the MIN item contains the minimum value, the MAX item contains the maximum value, the MEAN item contain the average value, and the STDV item contains the standard deviation. >LNHLSD.VAT > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 VALUE 4 10 B - > 5 COUNT 4 10 B - >LNHLSD.STA > >COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME > 1 MIN 8 15 F 3 > 9 MAX 8 15 F 3 > 17 MEAN 8 15 F 3 > 25 STDV 8 15 F 3 >Coding of LABEL and DESC attributes in the lngeo coverage: >LABEL | DESC_ >af | Mine waste/artificial fill (latest Holocene) >Cd | Dotsero Formation (Upper Cambrian) >Cs | Sawatch Quartzite (Upper Cambrian) >Dc | Chaffee Group, undivided (Upper Devonian) >Dcd | Chaffee Group, Dyer Dolomite (Upper Devonian) >Dcp | Chaffee Group, Parting Sandstone (Upper Devonian) >Ml | Leadville Limestone (Lower Mississippian) >Om | Manitou Dolomite (Lower Ordovician) >Pb | Belden Formation (Middle and Lower Pennsylvanian) >Pm | Minturn Formation (Middle Pennsylvanian) >Qa | Alluvium (Holocene) >Qac | Alluvium and colluvium, undivided (Holocene and late Pleistocene) >Qd | Diamicton (middle and early? Pleistocene) >Qdf | Debris flow deposits (Holocene and late Pleistocene) >Qgb | Outwash gravel of Bull Lake glaciation (late? and middle Pleistocene) >Qgby | Younger outwash gravel of Bull Lake glaciation (late? and middle Pleistocene) >Qgp | Outwash gravel of Pinedale glaciation (late Pleistocene) >Qgpb | Outwash gravel of pre-Bull Lake glaciations (middle and early? Pleistocene) >Qls | Landslide deposits (Holocene and late Pleistocene) >Qtb | Till of Bull Lake glaciation (late middle Pleistocene) >Qtp | Till of Pinedale glaciation (late Pleistocene) >Qtpb | Till of pre-Bull Lake glaciations (middle and early? Pleistocene) >Tg | Gray porphyry group (Eocene) >Thl | Hornblende latite porphyry (Eocene?) >TKu | Undivided porphyries (Paleocene and Upper Cretaceous) >TKw | White porphyry group (Paleocene and Upper Cretaceous) >Tl | Lincoln Porphyry (Eocene) >Trp | Rhyolite porphyry (Oligocene?) >w | Open water >Xb | Biotite gneiss (Paleoproterozic) >Ygs | St. Kevin Granite (Mesoproterozoic) >YXmr | Monzogranite, granodiorite, biotite gneiss and schist, and pegmatite, undivided (Mesoproterozoic and Paleoproterozic) >YXp | Pegmatite and aplite (Mesoproterozoic? and Paleoproterozic?) >Coding of LINECODE and NAME attributes in the lngeo coverage: >LINECODE | NAME >1 | Contact - Certain >2 | Contact - Approximately located >5 | Boundary of patterned area >20 | Contact - Inferred >32 | Fluvial terrace scarp - Certain >35 | Crest line of moraine >41 | Shoreline >59 | j8 bed - Certain >60 | j8 bed - Approximately located >81 | Map boundary >101 | Fault - Certain >102 | Fault - Approximately located >103 | Fault - Concealed >111 | Normal fault - Certain >112 | Normal fault - Approximately located >113 | Normal fault - Concealed >161 | Reverse fault - Certain >162 | Reverse fault - Approximately located >163 | Reverse fault - Concealed >505 | Yhd dike - Certain >505 | Tg dike - Certain >505 | Tl dike - Certain >505 | Trp dike - Certain >505 | TKu dike - Certain >505 | TKw dike - Certain >505 | Tr dike - Certain >506 | Trp dike - Approximately located >506 | TKw dike - Approximately located >506 | Yhd dike - Approximately located >506 | Tg dike - Approximately located >507 | Tg dike - Concealed >507 | TKw dike - Concealed >528 | Lineament of probable and suspect tectonic origin >537 | Fault - Inferred >604 | Vein - Certain >605 | Vein - Approximately located >606 | Vein - Concealed >Coding of LINECODE and NAME attributes in the lnlscarp coverage: >LINECODE | NAME >511 | Landslide scarp - Certain >Coding of PTTYPE attributes in the lnpts coverage: >PTTYPE >Caved tunnel >Fault attitude - Showing strike and dip >Inclined bedding - Showing strike and dip >Inclined foliation - Showing strike and dip >Inclined porphyry dike attitude - Showing dip >Inclined vein attitude - Showing dip >Prospect pit or shallow shaft >Shaft >Tunnel >Vertical foliation - Showing strike >Coding of PTTYPE attributes in the lnpta coverage: >PTTYPE >Horizontal lineation - Showing bearing >Inclined lineation - Showing bearing and plunge >Slickensides or grooves on vein, fault, or dike - Showing bearing and plunge >Coding of PTTYPE attributes in the lnptd coverage: >PTTYPE >Drill hole - Depth to top of rock unit and total depth (TD) indicated in feet >Coding of PTTYPE attributes in the lnptps coverage: >PTTYPE >Depth to formation observed in shaft - Showing rock unit label and depth in feet >Coding of PTTYPE attributes in the lncosmo coverage: >PTTYPE >Cosmogenic age site Auxiliary files: geol_sfo.lin: This lineset file defines geologic line types in the geologically themed coverages. geoscamp2.mrk: This markerset file defines the geologic markers in the geologically themed coverages. wpgcmykg.shd: This shadeset file defines the cmyk values of colors assigned to polygons in the geologically themed coverages. sim3400.pdf: A print optimized file for viewing and printing a graphics version of the map and accessory elements using Adobe Acrobat viewing software (version 15.0). (Adobe Acrobat viewing software is free and can be downloaded at the following URL: http://get.adobe.com/reader/ https://pubs.usgs.gov/of/0438/ U.S. Geological Survey-ScienceBase mailing address

Denver Federal Center, Bldg. 810, Mail Stop 302

Denver CO 80225-0046 1-888-275-8747 sciencebase@usgs.gov Data Release This database, identified as SIM 3400, has been approved for release by the U.S. Geological Survey (USGS). Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Furthermore, it is released on condition that neither the USGS nor the U.S. Government may be held liable for any damages resulting from its authorized or unauthorized use. Although these data have been processed successfully on a computer System at the U.S. Geological Survey (USGS), no warranty, expressed or implied is made regarding the display or utility of the data on any other system, or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. The USGS or the U.S. Government shall not be held liable for improper or incorrect use of the data described and/or contained herein. Although this information product, for the most part, is in the public domain, it also may contain copyrighted material as noted in the text. Permission to reproduce copyrighted items must be secured from the copyright owner. ARCE,SHP,GDB 10.4.1 2016 In Windows, use WinZip (http://www.winzip.com/) or other programs to extract the file. https://doi.org/10.5066/F7DR2TRG https://doi.org/10.3133/sim3400 none 20220829 2018 Theodore Brandt U.S. Geological Survey mailing address

U.S. Geological Survey

MS 980, Box 25046 Denver Federal Center

Denver CO 80225-0046 303-236-1901 tbrandt@usgs.gov FGDC Content Standards for Digital Geospatial Metadata FGDC-STD-001-1998