Identification_Information: Citation: Citation_Information: Originator: Robert G. Bohannon Originator: Chester A. Ruleman Publication_Date: 2013 Title: Geologic Map of the Mount Sherman 7.5' Quadrangle, Lake and Park Counties, Colorado Edition: version 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: USGS Scientific Investigations Map Issue_Identification: SIM 3271 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/sim/3271 Description: Abstract: The Mount Sherman 7.5-minute quadrangle is located along the crest of the Mosquito Range in between Leadville and Fairplay, Colorado. There are eleven 13,000-foot peaks and one 14'er, Mount Sherman, within the quadrangle. General elevations range from 10,400-14,036 feet (3,200-4,278 meters). The western half of the quadrangle primarily consists of Proterozoic granitic rocks reverse faulted over Paleozoic sedimentary rocks during the Laramide orogeny of late Cretaceous and Paleocene time. Coeval to this contractional event, sills and laccoliths of the White porphyry group/Pando Porphyry were emplaced in the surrounding country rocks. Igneous activity continued into the Late Eocene with the emplacement of the Sacramento Porphyry (~43.9 Ma) and the Gray porphyry group (~36.7 Ma), and as young as 29 Ma to the north within the Climax quadrangle. With the inception of the Rio Grande rift within the region, the Paleozoic sedimentary rocks and Late Cretaceous to early Oligocene igneous rocks were extensionally faulted and tilted to the east. This resulted in the present 20-30 degree dip slope of these rocks on top of Proterozoic basement rocks within the eastern half of the quadrangle. This extensional regime has continued well into the Pliocene. Within the southwestern quadrant, suspicious lineaments, alignment of springs, and continuous, measureable escarpments provide reasonable evidence for Quaternary tectonic activity along the western flank of the range. Pleistocene glaciers have dramatically sculpted the region, providing exceptional exposure of the region's bedrock and structure. Purpose: This region was mapped to gain a better understanding of the Paleozoic stratigraphy, extent of the Leadville mining district, glacial history, and Rio Grande rift structures. Supplemental_Information: DATASETS INCLUDED IN THIS GEOSPATIAL DATABASE: Geology Feature Dataset: MountSherman_polys-geologic unit polygons MountSherman_lines-contacts and faults MountSherman_pnts-geologic point features MountSherman_folds-anticlines and syncline features MountSherman_faultconcealed-concealed faults MountSherman_labels-geologic unit labels MountSherman_xsections-geologic cross sections RASTERS MtSherman_shd-shaded relief MtSherman_topo-topographic basemap Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2012 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -106.25 East_Bounding_Coordinate: -106.125 North_Bounding_Coordinate: 39.25 South_Bounding_Coordinate: 39.125 Keywords: Theme: Theme_Keyword_Thesaurus: AGI Glossary of Geology Theme_Keyword: Rio Grande rift Theme_Keyword: Mosquito Range Theme_Keyword: extensional tectonics Theme_Keyword: Laramide tectonics Theme_Keyword: Leadville mining district Theme_Keyword: glaciation Theme_Keyword: Mosquito fault Theme_Keyword: Weston fault Theme_Keyword: Leadville mining district Theme_Keyword: Mosquito-Union fault Theme_Keyword: sill emplacement Place: Place_Keyword_Thesaurus: U.S. Board on Geographic Names (BGN) Place_Keyword: United States Place_Keyword: USA Place_Keyword: Colorado Place_Keyword: Mount Sherman, CO Place_Keyword: Leadville, CO Place_Keyword: Mosquito Range Place_Keyword: Fairplay, CO Place_Keyword: Alma, CO Place_Keyword: Weston Pass Place_Keyword: Leadville mining district Place_Keyword: Arkansas Valley, CO Place_Keyword: San Isabel National Forest Place_Keyword: Lake Country Place_Keyword: Park County Place_Keyword: Arkansas Valley Stratum: Stratum_Keyword_Thesaurus: National Geologic Map Database Geologic Names Lexicon Stratum_Keyword: Sawatch Quartzite Stratum_Keyword: Dotsero Formation Stratum_Keyword: Manitou Dolomite Stratum_Keyword: Chaffee Group Stratum_Keyword: Leadville Limestone Stratum_Keyword: Belden Formation Stratum_Keyword: Minturn Formation Stratum_Keyword: Sacramento Porphyry Stratum_Keyword: Bull Lake Till Stratum_Keyword: Pinedale Till Temporal: Temporal_Keyword_Thesaurus: International Commission on Stratigraphy Temporal_Keyword: Paleoproterozoic Temporal_Keyword: Mesoproterozoic Temporal_Keyword: Upper Cambrian Temporal_Keyword: Lower Ordovician Temporal_Keyword: Lower Mississippian and Devonian Temporal_Keyword: Mississippian Temporal_Keyword: Atokan and Morrowan Temporal_Keyword: Desmoinesian and Atokan Temporal_Keyword: Early Paleocene and Late Cretaceous Temporal_Keyword: Eocene Temporal_Keyword: late middle Pleistocene Temporal_Keyword: late Pleistocene Temporal_Keyword: Holocene and latest Pleistocene Temporal_Keyword: Holocene Access_Constraints: none Use_Constraints: Users of this geospatial database and geologic information derived there from should acknowledge the U.S. Geological Survey as the source of the data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Cal Ruleman Contact_Address: Address_Type: mailing address Address: USGS, MS 980, Box 25046, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225 Contact_Voice_Telephone: (303) 236-7804 Contact_Facsimile_Telephone: 303-236-5349 Contact_Electronic_Mail_Address: cruleman@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/SIM/3271 Browse_Graphic_File_Description: Graphical representation of the map Browse_Graphic_File_Type: PDF Native_Data_Set_Environment: Microsoft Windows XP Professional Version 2002 Service Pack 3 - ArcCatalog Version 10.0 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Attributes were entered digitally and checked by GIS technician. Authors and USGS map editors performed separate reviews. Logical_Consistency_Report: Map elements were visually checked for overshoots, undershoots, duplicate features, polygon closure, and other errors by the author and by the GIS technician(s) that created the digital database. Automated 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 two other geologists for consistency with basic geologic principles and general conformity to USGS mapping standards. Completeness_Report: Data are complete: no features that could be accurately represented at the compilation scale were eliminated or generalized. All geospatial database elements are attributed. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Most digitized positions on the map are estimated to have about 10 meters horizontal accuracy. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Behre, C.H., Jr. Publication_Date: 1953 Title: Geology and ore deposits of the west slope of the Mosquito Range, Colorado Edition: none Geospatial_Data_Presentation_Form: none Series_Information: Series_Name: U.S. Geological Survey Professional Paper Issue_Identification: 235 Publication_Information: Publication_Place: U.S. Geological Survey Publisher: U.S. Geological Survey Type_of_Source_Media: book and plates Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1953 Source_Currentness_Reference: 1953 Source_Citation_Abbreviation: none Source_Contribution: geologic features Source_Information: Source_Citation: Citation_Information: Originator: Emmons, S.F. Originator: Originator Publication_Date: 1886 Title: Geology and mining industry of Leadville Edition: none Geospatial_Data_Presentation_Form: none Series_Information: Series_Name: U.S. Geological Survey Monograph Issue_Identification: no. 12 Publication_Information: Publication_Place: U.S. Geological Survey Publisher: U.S. Geological Survey Type_of_Source_Media: book and plates Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1886 Source_Currentness_Reference: 1886 Source_Citation_Abbreviation: none Source_Contribution: geologic features Source_Information: Source_Citation: Citation_Information: Originator: Emmons, S.F. Originator: Irving, J.D. Originator: and Loughlin, G.F. Publication_Date: 1927 Title: Geology and ore deposits of the Leadville mining district, Colorado Edition: none Geospatial_Data_Presentation_Form: none Series_Information: Series_Name: U.S. Geological Survey Professional Pape Issue_Identification: 148 Publication_Information: Publication_Place: U.S. Geological Survey Publisher: U.S. Geological Survey Type_of_Source_Media: book and plates Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 1927 Source_Currentness_Reference: 1927 Source_Citation_Abbreviation: none Source_Contribution: geologic features Source_Information: Source_Citation: Citation_Information: Originator: Cappa, J.A. Originator: Scott, L.M. Publication_Date: 2007 Title: Geologic Map of Lake County, Colorado Edition: none Geospatial_Data_Presentation_Form: shapefiles Series_Information: Series_Name: Colorado Geological Survey, Resource Series Issue_Identification: 42 Publication_Information: Publication_Place: Denver, CO Publisher: Colorado Geological Survey Type_of_Source_Media: map and digital files Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2007 Source_Currentness_Reference: 2007 Source_Citation_Abbreviation: none Source_Contribution: geologic features Source_Information: Source_Citation: Citation_Information: Originator: McCalpin, J.P. Originator: Funk, Jonathan Publication_Date: 2009 Title: Leadville South quadrangle geologic map, Lake County, Colorado Edition: none Geospatial_Data_Presentation_Form: shapefiles Series_Information: Series_Name: Colorado Geological Survey Open-File Report Issue_Identification: 09-08 Publication_Information: Publication_Place: Denver, CO Publisher: Colorado Geological Survey Type_of_Source_Media: manuscript, map, and digital files Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2009 Source_Currentness_Reference: 2009 Source_Citation_Abbreviation: none Source_Contribution: geologic features Source_Information: Source_Citation: Citation_Information: Originator: McCalpin, J.P. Originator: Temple, J. Originator: Sicard, K. Originator: Mendel, D. Originator: Ahmad, B. Publication_Date: 2012 Title: Climax quadrangle geologic map, Lake and Park Counties, Colorado Edition: none Geospatial_Data_Presentation_Form: shapefiles Series_Information: Series_Name: Colorado Geological Survey Open-File Report Issue_Identification: none Publication_Information: Publication_Place: Colorado Geological Survey Publisher: Colorado Geological Survey Type_of_Source_Media: manuscript, map, and digital files Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2012 Source_Currentness_Reference: 2012 Source_Citation_Abbreviation: none Source_Contribution: geologic features Source_Information: Source_Citation: Citation_Information: Originator: Widmann, B.L. Originator: Bartos, P.J. Originator: Madole, R.F. Originator: Barba, K.E. Originator: Moll, M.E. Publication_Date: 2004 Title: Geologic map of the Alma quadrangle, Park and Summit Counties, Colorado Edition: none Geospatial_Data_Presentation_Form: shapefiles Series_Information: Series_Name: Colorado Geological Survey Open-File Report Issue_Identification: 04-03 Publication_Information: Publication_Place: Denver, CO Publisher: Colorado Geological Survey Type_of_Source_Media: manuscript, map, digital files Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2004 Source_Currentness_Reference: 2004 Source_Citation_Abbreviation: none Source_Contribution: geologic features Source_Information: Source_Citation: Citation_Information: Originator: Widmann, B.L. Originator: ., Kirkham, R.M. Originator: Houck, K.J. Originator: Lindsay, N.R. Publication_Date: 2006 Title: Geologic map of the Fairplay West quadrangle, Park County, Colorado Edition: none Geospatial_Data_Presentation_Form: shapefiles Series_Information: Series_Name: Colorado Geological Survey Open-File Report Issue_Identification: 06-07 Publication_Information: Publication_Place: Denver, CO Publisher: Colorado Geological Survey Type_of_Source_Media: manuscript, map, digital files Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2006 Source_Currentness_Reference: 2006 Source_Citation_Abbreviation: none Source_Contribution: geologic features Process_Step: Process_Description: Data was compiled and mapped from 2010-2012. The geology was mapped by analyses of satellite and aerial photography in the office. Fieldwork was performed with the use of an iPad for accurate location of contacts and faults. The original digital files were created in Adobe Illustrator with the Avenza MapPublisher plug-in. Digital files were then converted to an Arc geodatabase. Process_Date: 2011 Process_Step: Process_Description: Draft check plots of the geologic map and explanation were created and submitted for peer review. Geologists reviewed the plots for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Revisions were made to the geospatial database as needed. Process_Date: 2013 Process_Step: Process_Description: Metadata created by Cal Ruleman Process_Date: 2013 Process_Step: Process_Description: The database files, metadata, and check plots were edited by the USGS Enterprise Publishing Network, and revisions made to the geospatial database as needed. Process_Date: 2013 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 13 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -105.0 Latitude_of_Projection_Origin: 0.0 False_Easting: 500000.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 0.000100 Ordinate_Resolution: 0.000100 Planar_Distance_Units: meters Geodetic_Model: Horizontal_Datum_Name: North American Datum of 1927 Ellipsoid_Name: Clarke 1866 Semi-major_Axis: 6378206.4 Denominator_of_Flattening_Ratio: 294.98 Entity_and_Attribute_Information: Overview_Description: Entity_and_Attribute_Overview: DATASETS: GEOLOGY Feature Dataset: MountSherman_polys-geologic unit polygons MountSherman_lines-contacts and faults MountSherman_pnts-geologic point features MountSherman_folds-anticlines and syncline features MountSherman_faultconcealed-concealed faults MountSherman_labels-geologic unit labels MOUNTSHERMAN_POLYS: Explanation of fields: UNIT-Short geologic unit name DESCRIPTION- Short geologic unit explanation AGE-Age of geologic unit Unit Description Age Cd Dotsero Formation Upper Cambrian Cdsu Dotsero Formation and Sawatch Quartzite, undivided Upper Cambrian Cs Sawatch Quartzite Upper Cambrian MDc Chaffee Group Lower Mississippian and Upper Devonian MDu Leadville Limestone and Chaffee Group, undivided Mississippian and Upper Devonian Ml Leadville Limestone Mississippian Om Manitou Dolomite Lower Ordovician Pb Belden Formation Atokan and Morrowan Pmg Minturn Formantion - gray-brown facies Desmoinesian and Atokan Pmh Minturn Formation - Hornfels facies Desmoinesian and Atokan Pmw Minturn Formation - white facies Desmoinesian and Atokan Qa Stream alluvium Holocene and latest Pleistocene Qac Alluvium and colluvium, undivided Holocene and late Pleistocene Qd mine dumps and waste Holocene Ql Lake deposits Holocene and latest Pleistocene Qls Landslide deposits Holocene and late Pleistocene Qrf Rockfall deposits Holocene Qrg Rock glacier deposits Holocene and latest Pleistocene Qtb Bull Lake Till late middle Pleistocene Qtp Pinedale Till late Pleistocene Tgu Gray porphyry group undifferentiated Eocene TKwp White porphyry group undifferentiated Early Paleocene and Late Cretaceous Tsp Sacramento Porphyry Eocene Water Yg Granitic rocks Mesoproterozoic YXmr Monzogranite, gneiss, and dikes, undivided Paleoproterozoic MOUNTSHERMAN_LINES: Explanation of fields: AGE-geologic age of fault DESCRIPTION-description of geologic line types Age Early T-Late K Middle Tertiary MiddleTertiary N/A Quaternary Description Contact-Approximately located Contact-Certain Fault-Approximately located Fault-Certain Fault scarp, queried Map Boundary Shoreline Thrust fault-Certain MOUNTSHERMAN_FOLDS: Explanation of fields: DESCRIPTION-description of fold type Description Syncline-Certain Anticline-Certain MOUNTSHERMAN_PNTS: Explanation of fields: DESCRIPTION-description of geologic point feature AZIMUTH-direction of trend in degrees, 0 - 360 DIP-direction of plunge in degrees, 0 -90 Description Inclined bedding-showing strike and dip Overturned bedding-showing strike and dip Fault scarp profile-CO-MS-1, surface offset 1.8 m Entity_and_Attribute_Detail_Citation: none Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: USGS, Information Services Box 25286 City: Denver State_or_Province: Colorado Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 1-888-ASK-USGS Contact_Electronic_Mail_Address: usgsstore@usgs.gov Resource_Description: Scientific Investigations Map 3271 Distribution_Liability: Any use of trade, product or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Geological Survey. Although this information product, for the most part, is in the public domain, it also contains copyrighted materials as noted in the text. Permission to reproduce copyrighted items for other than personal use must be secured from the copyright owner. This database has been approved for release and publication by the Director of the 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 United States 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, 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 U.S. Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: GEODATABASE, SHAPEFILE Format_Version_Number: 10.0 File_Decompression_Technique: ZIP Archive Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/SIM/3271 Fees: For current charges please see website http://store.usgs.gov/public/mod/order.html or download data at no cost. Metadata_Reference_Information: Metadata_Date: 2013 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Cal Ruleman Contact_Address: Address_Type: mailing address Address: Denver Federal Center Address: MailStop 980 City: Denver State_or_Province: Colorado Postal_Code: 80225 Country: USA Contact_Voice_Telephone: 303-236-7804 Contact_Facsimile_Telephone: 303-236-5349 Contact_Electronic_Mail_Address: cruleman@usgs.gov Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Access_Constraints: none Metadata_Use_Constraints: none