Metadata: Identification_Information: Citation: Citation_Information: Originator: Paul E. Carrara Publication_Date: 2001 Title: Geologic Map of the Clifton Quadrangle, Mesa County, Colorado Edition: 1.0 Geospatial_Data_Presentation_Form: map Series_Information: Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map Issue_Identification: MF-2359 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/mf/2001/mf-2359/ Description: Abstract: 1:24,000-scale geologic mapping in the Clifton 7.5' quadrangle, in support of the USGS Colorado River/I-70 Corridor Cooperative Geologic Mapping Project, provides interpretations of the Quaternary stratigraphy and geologic hazards in this area of the Grand Valley. The Clifton 1:24,000 quadrangle is in Mesa County in western Colorado. Because the map area is dominated by various surficial deposits, the map depicts 16 different Quaternary units. Five prominent river terraces are present in the quadrangle containing gravels deposited by the Colorado River. The map area contains a large landslide deposit on the southern slopes of Mount Garfield. The landslide developed in the Mancos Shale and contains large blocks of the overlying Mesaverde Group. In addition, the landslide is a source of debris flows that have closed I-70 in the past. The major bedrock unit in the quadrangle is the Mancos Shale of Upper Cretaceous age. The map is accompanied by text containing unit descriptions, and sections on geologic hazards (including landslides, piping, gullying, expansive soils, and flooding), and economic geology (including sand and gravel). A table indicates what map units are susceptible to a given hazard. Approximately 20 references are cited at the end of the report. Purpose: To update earlier small-scale geologic mapping, and to provide sufficient geologic information for land-use decisions. Supplemental_Information: Map political location: Mesa County, Colorado Compilation scale: 1:24,000 Geology mapped in 1996 to 1998. Compilation completed March 1999. DATASETS INCLUDED IN THIS GEOSPATIAL DATABASE: > clifpoly: geology polygons, contacts, and other linear features > clifline: line of cross-section A-A' > clifpnt: point features - bedding attitudes, drillholes Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 2001 Currentness_Reference: publication date Status: Progress: Complete Maintenance_and_Update_Frequency: Irregular. Mapping is continuing in the region and a more complete map of this area may eventually be produced. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -108.50 East_Bounding_Coordinate: -108.375 North_Bounding_Coordinate: 39.125 South_Bounding_Coordinate: 39.00 Keywords: Theme: Theme_Keyword_Thesaurus: USGS Thesaurus Theme_Keyword: geology Theme_Keyword: geologic maps Theme_Keyword: lithostratigraphy Theme_Keyword: surficial geologic units Theme_Keyword: bedrock geologic units Theme_Keyword: landslides Theme_Keyword: faulting (geologic) Theme_Keyword: folding (geologic) Theme_Keyword: geospatial datasets Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Categories Theme_Keyword: geoscientificInformation Theme: Theme_Keyword_Thesaurus: American Geological Institute (AGI) Glossary of Geology Theme_Keyword: Geologic map Theme_Keyword: Cretaceous sedimentary rocks Theme_Keyword: Quaternary surficial deposits Theme_Keyword: geologic hazards Place: Place_Keyword_Thesaurus: none Place_Keyword: USA Place_Keyword: Colorado Place_Keyword: Mesa County Place: Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4 Place_Keyword: f08077 = Mesa Access_Constraints: none Use_Constraints: none. Acknowledgment of the U.S. Geological Survey would be appreciated in products derived from these data. Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Paul E. Carrara Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: MS 913, Box 25046 DFC City: Denver State_or_Province: CO Postal_Code: 80225-0046 Contact_Voice_Telephone: 303-236-1287 Contact_Electronic_Mail_Address: pcarrara@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/mf/2001/mf-2359/mf-2359.pdf Browse_Graphic_File_Description: graphic representation of map layout Browse_Graphic_File_Type: PDF Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: 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 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. This map has been thoroughly reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. 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 (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 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 of 1:24,000 were eliminated or generalized. The smallest area represented is approximately 570 square meters. All geospatial database elements are attributed. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Lines were primarily positioned by photointerpretation of aerial photographs using a PG-2 photogrammetric plotter that rectified the position and transferred it to a basemap. Lines were digitized from the basemap using a digitizer tablet with resolution of 0.001 inch. Additional lines and point observations were added in the field using positions determined by a PLGR-95 GPS unit with accuracy of about 10 meters. Most positions on the map are estimated to be accurate closer than 30 m horizontally. Lineage: Process_Step: Process_Description: Polygons, lines, and points representing geologic features and data points were digitized from scale-stable compilation materials using the GSMCAD public domain program (USGS Open-File Report 96-007). Process_Date: 1999 Process_Step: Process_Description: The map data were exported to ARC/INFO using the GSMCAD export function to create ARC generate ASCII files. The ASCII files were then imported into ArcInfo using the GENERATE routine, and polygon topology built. Process_Date: 1999 Process_Step: Process_Description: The gsmdraw.aml program was used in ARC to produce a graphics file of the colored map. In addition an explanation sheet was produced that includes a correlation of map units diagram, a list of map unit names and corresponding symbols, and an explanation of graphical map symbols. Process_Date: 1999 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: 1999 Process_Step: Process_Description: Text map unit descriptors were added to the .AAT and .PAT database files for each coverage. Process_Date: 2001 Process_Step: Process_Description: The geospatial database files and metadata were quality checked for completeness and consistency. Process_Date: 2001 Process_Step: Process_Description: The database files, metadata, and check plots were edited by the USGS Central Publications Group, and revisions made to the geospatial database as needed. Process_Date: 2001 Process_Step: Process_Description: Final preparation of the geospatial database for distribution, and preparation of map-on-demand files and metadata. Process_Date: 2001 Process_Step: Process_Description: Creation of original metadata record Process_Date: 20010111 Process_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Paul E. Carrara Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Address: MS 913, Box 25046 DFC City: Lakewood State_or_Province: CO Postal_Code: 80225-0046 Contact_Voice_Telephone: 303-236-1287 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Polyconic Polyconic: Longitude_of_Central_Meridian: -108.4375 Latitude_of_Projection_Origin: 39.0 False_Easting: 0.0 False_Northing: 0.0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 10 Ordinate_Resolution: 10 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: >COVERAGE NAME: clifpoly >USER-DEFINED ITEMS IN CLIFPOLY.PAT: >ATTRIBUTE NAME: CODE >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: numeric entity identifier; used for printing >ITEM VALUES FOR 'CODE': >500 >501 >ATTRIBUTE NAME: P1 >DATABASE ITEM STRUCTURE: 5,5,I,0 >DESCRIPTION: numeric entity identifier; used for printing >ITEM VALUES FOR 'P1': >Integer values in the range 100 - 586. >ATTRIBUTE NAME: P2 >DATABASE ITEM STRUCTURE: 5,5,I,0 >DESCRIPTION: numeric entity identifier; used for printing >ITEM VALUES FOR 'P2': >20 >80 >ATTRIBUTE NAME: LABEL >DATABASE ITEM STRUCTURE: 6,6,C,0 >DESCRIPTION: geologic unit text label >ITEM VALUES FOR 'LABEL': >(see table below) >ATTRIBUTE NAME: MODIFIER >DATABASE ITEM STRUCTURE: 10,10,C,0 >DESCRIPTION: additional information for description, if any >ITEM VALUES FOR 'MODIFIER': >gravel pit >ATTRIBUTE NAME: SYMBOL >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: shade symbol in color524.shd used to color polygons >ITEM VALUES FOR 'SYMBOL': >(see table below) >ATTRIBUTE NAME: DESC >DATABASE ITEM STRUCTURE: 80,80,C,0 >DESCRIPTION: text description of geologic unit >ITEM VALUES FOR 'DESC': >(see table below) >RELATION OF ITEMS LABEL,MODIFIER, SYMBOL, and DESC: >LABEL MODIFIER SYMBOL DESC >Kd 454 Dakota Sandstone (Lower Cretaceous) >Km 491 Mancos Shale (Upper Cretaceous) >Kmg 432 Mount Garfield Formation and tongues of Mancos Shale (Upper Cretaceous) >Qa 6 Alluvium of tributary channels (Holocene and late Pleistocene) >Qac 25 Undivided alluvium and colluvium (Holocene and latest Pleistocene) >Qalc1 11 Stream channel and floodplain deposits along the Colorado River (Holocene) >Qalc1 gravel pit 11 Stream channel and floodplain deposits along the Colorado River (Holocene) >Qalc2 11 Alluvium deposited by the Colorado River (Holocene and latest Pleistocene) >Qalc2 gravel pit 11 Alluvium deposited by the Colorado River (Holocene and latest Pleistocene) >Qls 39 Landslide deposits (Holocene and late Pleistocene) >Qp4 451 Pediment deposit north of Sink Creek (early? Pleistocene) >Qpmv 451 Pediment deposit east of Moulton Valley (late? Pleistocene) >Qpu 451 Undifferentiated pediment deposits (early? Pleistocene) >Qt1 22 Terrace alluvium (late Pleistocene) >Qt2 46 Terrace alluvium (middle Pleistocene) >Qt2 gravel pit 46 Terrace alluvium (middle Pleistocene) >Qt3 110 Terrace alluvium (early Pleistocene) >Qt3 gravel pit 110 Terrace alluvium (early Pleistocene) >Qt4 62 Terrace alluvium (early Pleistocene) >Qt5 29 Terrace alluvium (early Pleistocene) >Qtsc 14 Terrace alluvium of Sink Creek (late to middle Pleistocene) >Qtu 20 Undifferentiated terrace alluvium (middle to early Pleistocene) >af 8 Artificial fill (latest Holocene) >(none) 327 water >USER-DEFINED ITEMS IN CLIFPOLY.AAT: >------------------------------------ > >ATTRIBUTE NAME: CODE >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: numeric entity identifier; used for printing >ITEM VALUES FOR 'CODE': >1 >4 >92 >99 >ATTRIBUTE NAME: P1 >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: numeric entity identifier; used for printing >ITEM VALUES FOR 'P1': >1 >ATTRIBUTE NAME: P2 >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: numeric entity identifier; used for printing >ITEM VALUES FOR 'P2': >0 >2 >ATTRIBUTE NAME: LINETYPE >DATABASE ITEM STRUCTURE: 80,80,C,0 >DESCRIPTION: description of linear feature type >ITEM VALUES FOR 'LINETYPE': >(see table below) >ATTRIBUTE NAME: SYMBOL >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: linesymbol in geol_sfo.lin used to draw line entities >ITEM VALUES FOR 'SYMBOL': >(see table below) >RELATIONSHIP OF ITEMS LINETYPE and SYMBOL: >LINETYPE SYMBOL >contact; certain 1 >gravel pit boundary 1 >contact; topographic escarpment 171 >map boundary 173 >COVERAGE NAME: clifline >USER-DEFINED ITEMS IN CLIFLINE.AAT: >ATTRIBUTE NAME: CODE >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: numeric entity identifier; used for printing >ITEM VALUES FOR 'CODE': >98 >ATTRIBUTE NAME: P1 >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: numeric entity identifier; used for printing >ITEM VALUES FOR 'P1': >1 >ATTRIBUTE NAME: P2 >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: numeric entity identifier; used for printing >ITEM VALUES FOR 'P2': >0 >ATTRIBUTE NAME: LINETYPE >DATABASE ITEM STRUCTURE: 80,80,C,0 >DESCRIPTION: description of linear feature type >ITEM VALUES FOR 'LINETYPE': >line of cross-section A-A prime >ATTRIBUTE NAME: SYMBOL >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: linesymbol in geol_sfo.lin used to draw line entities >ITEM VALUES FOR 'SYMBOL': >227 >COVERAGE NAME: clifpnt >USER-DEFINED ITEMS IN CLIFPNT.PAT: >ATTRIBUTE NAME: STRIKE >DATABASE ITEM STRUCTURE: 7,7,I,0 >DESCRIPTION: compass orientation of feature, in degrees >ITEM VALUES FOR 'STRIKE': >integer values in the range 0 - 360 >ATTRIBUTE NAME: DIP >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: inclination from horizontal of feature, in degrees >ITEM VALUES FOR 'DIP': >integer values in the range 0 -90 >ATTRIBUTE NAME: DESC >DATABASE ITEM STRUCTURE: 80,80,C,0 >DESCRIPTION: text description of feature type >ITEM VALUES FOR 'DESC': >drillhole, dry >strike and dip of inclined beds >ATTRIBUTE NAME: SYMBOL >DATABASE ITEM STRUCTURE: 3,3,I,0 >DESCRIPTION: markersymbol used to draw feature >ITEM VALUES FOR 'SYMBOL': >2 >101 >ATTRIBUTE NAME: SYMSET >DATABASE ITEM STRUCTURE: 20,20,C,0 >DESCRIPTION: ArcInfo markerset associated with the SYMBOL item above >ITEM VALUES FOR 'SYMSET': >geoscamp1.mrk >oilgas.mrk 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 Address: Box 25286 City: Denver State_or_Province: CO Postal_Code: 80225 Country: United States Contact_Voice_Telephone: 1-888-ASK-USGS Resource_Description: MF-2359 Distribution_Liability: Although this digital spatial data has been subjected to rigorous review and is substantially complete, it is released on the condition that neither the USGS nor the United States Government may be held liable for any damages resulting from its authorized or unauthorized use. Standard_Order_Process: Digital_Form: Digital_Transfer_Information: Format_Name: ARCE, Shapefile Format_Version_Number: ArcInfo version 7.1.2 Format_Information_Content: Geologic units and structural features File_Decompression_Technique: gzip -d and tar or unzip Transfer_Size: 0.9 Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/mf/2001/mf-2359/mf-2359.zip Network_Resource_Name: http://pubs.usgs.gov/mf/2001/mf-2359/mf-2359.tar.gz Fees: none Metadata_Reference_Information: Metadata_Date: 20160205 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Peter N Schweitzer Contact_Organization: USGS Midwest Area Contact_Position: Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/ Contact_Address: Address_Type: mailing address Address: Mail Stop 954 12201 Sunrise Valley Dr City: Reston State_or_Province: VA Postal_Code: 20192-0002 Country: USA Contact_Voice_Telephone: 703-648-6533 Contact_Facsimile_Telephone: 703-648-6252 Contact_Electronic_Mail_Address: pschweitzer@usgs.gov Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998