Entry_ID: (required) Entry_Title: Generalized Surficial Geologic Map of the Pueblo 1° x 2° Quadrangle, Colorado Group: Data_Set_Citation Originator(s): David W. Moore; Arthur W. Straub; Margaret E. Berry; Michael L. Baker; Theodore R. Brandt Title: Generalized Surficial Geologic Map of the Pueblo 1° x 2° Quadrangle, Colorado Publication: U.S. Geological Survey Miscellaneous Field Studies Map Publication_Date: 2002 Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Edition: 1.0 URL: http://geology.cr.usgs.gov/pub/mf-maps/mf-2388/ End_Group Keyword: geology Keyword: geologic maps Keyword: geospatial datasets Keyword: surficial geologic units Keyword: unconsolidated deposits Keyword: placer deposit mining Keyword: mass wasting Keyword: Pleistocene Keyword: Quaternary Keyword: Holocene Group: Temporal_Coverage Start_date: 2002 Stop_date: 2002 End_Group Data_Set_Progress: Complete Group: Spatial_Coverage Southernmost_Latitude: 38.0 Northernmost_Latitude: 39.0 Westernmost_Longitude: -106.0 Easternmost_Longitude: -104.0 End_Group Location: United States of America Location: Colorado Location: Colorado Springs Location: Pueblo Location: Salida Location: Saguache County Location: Crowley County Location: Douglas County Location: Elbert County Location: El Paso County Location: Grand County Location: Lincoln County Location: Park County Location: Custer County Location: Teller County Location: Fowler Location: Arkansas River Location: Canon City Location: Westcliffe Location: San Luis Valley Location: Pikes Peak Location: Security Location: Fountain Location: Florissant Location: Front Range Location: Southern Rocky Mountains Location: Colorado Piedmont Location: Great Plains Group: Data_Resolution Latitude_Resolution: 200 Longitude_Resolution: 200 End_Group Access_Constraints: none Use_Constraints: none. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. Originating_Center: (required) Group: Data_Center Data_Center_Name: U.S. Geological Survey Dataset_ID: USGS Miscellaneous Field Studies Map MF-2388 Group: Data_Center_Contact Last_name: U.S. Geological Survey First_name: N/A Phone: 1-888-ASK-USGS Group: Address USGS Information Services, Box 25286, Denver Federal Center Lakewood, CO 80225 End_Group End_Group End_Group Group: Distribution Distribution_Media: online Distribution_Format : ARCE Distribution_Size: 1.4 Fees: none End_Group Group: Distribution Distribution_Media: online Distribution_Format : Shapefile Distribution_Size: 1.4 Fees: none End_Group Group: Multimedia_Sample URL: http://geology.cr.usgs.gov/pub/mf-maps/mf-2388/mf-2388.gif Format: GIF Caption: Reduced-size image of the entire map sheet, 400x172 pixels, 33k bytes. End_Group Group: Multimedia_Sample URL: http://pubs.usgs.gov/mf/2002/mf-2388/mf-2388_print.pdf Format: PDF Group: Description The browse graphic file depicts a layout, featuring geologic map and supporting information. The geologic map image is colored, labeled polygons of surficial geologic units and is shown with a scanned image of roads, rivers, political boundaries, place names, and other base map features, all registered to the geologic map. These features are the standard USGS 1:250,000 base map data, including longitude and latitude, numbered UTM (meters), and the Colorado State Coordinate System (feet) grid ticks (21 internal grid tics at 15-minute intervals of longitude and latitude are visible). Supporting information includes a correlation chart of geologic map units, a list of map unit symbols and names, and a small location map that shows the quadrangle location relative to rivers, state boundaries, and locations of 26 published USGS geologic maps (1:250,000 scale) in the Colorado Plateau and western Great Plains. An accompanying pamphlet includes a complete description of map units, selected references, and a description of terminology used. End_Group End_Group Group: Reference End_Group Group: Summary The report may be used for land-use planning (e.g., selecting land-fill sites, greenbelts, avoiding geologic hazards), for finding aggregate resources (crushed rock, sand, and gravel), and for study of geomorphology and Quaternary geology. The report identifies geologic hazards (e.g., landslides, swelling soils, heaving bedrock, and flooding) if they are known to be located in, or characteristic of, mapped units. Surficial deposits in the quadrangle are evidence of depositional events of the Quaternary Period (the most recent 1.8 million years). Some events such as floods are familiar to persons living in the area, while others preceded human occupation. The latter include glaciation, probable large earthquakes, protracted drought, and widespread deposition of sand and silt by wind. At least twice in the past 200,000 years (most recently from about 30,000 to 12,000 years ago) global cooling caused glaciers to form on Pikes Peak and in the high parts of the Sangre de Cristo Mountains. Some glaciers advanced down valleys, deeply eroded the bedrock, and deposited moraines (map units tbk, tbg, tbj, tbi) and deposited outwash (ggq, gge), in the Wet Mountain Valley. On the plains (east part of map area), eolian sand (es), stabilized dune sand (ed), and loess (elb) are present and in places contain buried paleosols, which indicate sand dune deposition alternating with periods of stabilized landscape during which soils developed. Fifty-three types of surficial geologic deposits and residual materials of Quaternary age are described in a pamphlet and located on a map of the greater Pueblo area, in part of the Front Range, in the Wet and Sangre de Cristo Mountains, and on the plains east of Colorado Springs and Pueblo. Deposits formed by landslides, wind, and glaciers, as well as colluvium, residuum, alluvium, and others are described in terms of predominant grain size, mineral or rock composition (e.g., gypsiferous, calcareous, granitic, andesitic), thickness, and other physical characteristics. Origins and ages of the deposits and geologic hazards related to them are noted. Many lines drawn between units on our map were placed by generalizing contacts on published maps. However, in 1997-1999 we mapped new boundaries as well. The map was projected to the UTM projection. This large map area extends from near Salida (on the west edge), eastward about 107 mi (172 km), and from Antero Reservoir and Woodland Park on the north edge to near Colorado City at the south edge (68 mi; 109 km). Compilation scale: 1:250,000. Map is available in digital and print-on-demand paper formats. Deposits are described in terms of predominant grain size, mineralogic and lithologic composition, general thickness, and geologic hazards, if any, and relevant geologic historical information and paleosoil information, if any. Fifty-three map units of deposits include alluvium, colluvium, residuum, eolian deposits, periglacial/disintegrated deposits, tills, landslide units, glaciofluvial units, and a diamicton. A bedrock map unit depicts large areas of mostly bare bedrock. The physical properties of materials were compiled from published soil and geologic maps and reports, our field observations, and from earth science journal articles. Selected deposits in the field were checked for conformity to descriptions of map units by the Quaternary geologist who compiled the surficial geologic map units. FILES INCLUDED IN THIS DATA SET: >puebpoly: polygon coverage containing geologic unit contacts and labels. >puebline: arc coverage containing faults. >puebpnt: point coverage containing point locations of decorative > bar-and-ball symbols for faults. >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. >color524.shd: This shadeset file defines the cmyk values of colors > assigned to polygons in the geologically themed coverages. End_Group Group: DIF_Author Last_name: Schweitzer First_name: Peter Middle_name: N Email: pschweitzer@usgs.gov Phone: 703-648-6533 Group: Address Mail Stop 954 12201 Sunrise Valley Dr Reston, VA 20192-0002 USA End_Group End_Group DIF_Revision_Date: 20150204 Science_Review_Date: