Identification_Information: Citation: Citation_Information: Originator: Karl S. Kellogg Originator: Bruce Bryant Originator: Margaret H. Redsteer Publication_Date: 2003 Title: Geologic map of the Vail East quadrangle, Eagle County, Colorado Edition: 1.0 Geospatial_Data_Presentation_Form: Map Series_Information: Series_Name: USGS Miscellaneous Field Studies Map Issue_Identification: MF-2375 Publication_Information: Publication_Place: Denver, Colorado Publisher: U.S. Geological Survey Online_Linkage: http://pubs.usgs.gov/mf/2003/mf-2375/ Description: Abstract: New 1:24,000-scale geologic mapping along the Interstate-70 urban corridor in western Colorado, in support of the State/USGS Cooperative Geologic Mapping Project, is contributing to a more complete understanding of the stratigraphy, structure, tectonic evolution, and hazard potential of this rapidly developing region. The 1:24,000-scale Vail East quadrangle straddles the Gore fault system, the western structural boundary of the Gore Range. The Gore fault system is a contractional structure that has been recurrently active since at least the early Paleozoic and marks the approximate eastern boundary of the Central Colorado trough, a thick late Paleozoic depocenter into which thousands of meters of clastic sediment were deposited from several uplifts, including the ancestral Front Range. The Gore fault was active during both the late Paleozoic and Upper Cretaceous-lower Tertiary (Laramide) deformations. In addition, numerous north-northwest faults that cut the crystalline rocks of the Gore Range were active during at least 5 periods, the last of which was related to Neogene uplift of the Gore Range and formation of the northern Rio Grande rift. Early Proterozoic crystalline rocks underlie the high Gore Range, north and east of the Gore fault system. These rocks consist predominantly of migmatitic biotite gneiss intruded by mostly granitic rocks of the 1.667-1.750 Ma Cross Creek batholith, part of the 1,667-1,750 Ma Routt Plutonic Suite (Tweto, 1987). Southwest of the Gore fault, a mostly gently south-dipping sequence of Pennsylvanian Mimturn Formation, as thick as 1,900 m, and the Permian and Pennsylvanian Maroon Formation (only the basal several hundred meters are exposed in the quadrangle)were shed from the ancestral Front Range and overlie a thin sequence of Devonian and Cambrian rocks. The Minturn Formation is a sequence of interlayered pink, maroon, and gray conglomerate, sandstone, shale, and marine limestone. The Maroon Formation is mostly reddish conglomerate and sandstone. Glacial till of both the middle Pleistocene Bull Lake and late Pleistocene Pinedale glaciations are well exposed along parts of the Gore Creek valley and its tributaries, although human development has profoundly altered the outcrop patterns along the Gore Creek valley bottom. Landslides, some of which are currently active, are also mapped. Purpose: To update and reinterpret earlier geologic mapping of the area, and to achieve a uniform regional geologic database. Supplemental_Information: Arc/Info coverages, shapefiles and related files included in this dataset: vaileastgeol(.shp) vaileastline(.shp) vaileastpoint(.shp) unique ArcInfo shadesets,linesets and markersets: color524.shd 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 adjacent quadrangles and revisions may be made as required. Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -106.375 East_Bounding_Coordinate: -106.25 North_Bounding_Coordinate: 39.75 South_Bounding_Coordinate: 39.625 Keywords: Theme: Theme_Keyword_Thesaurus: AGI Glossary of Geology Theme_Keyword: Geologic map Theme_Keyword: Gore fault Theme_Keyword: Ancestral Front Range Theme_Keyword: Gore Range Theme_Keyword: Proterozoic rocks Theme_Keyword: Late Paleozoic Theme_Keyword: Gore Creek Theme_Keyword: Minturn Formation Place: Place_Keyword_Thesaurus: Board of Geographic Names Place_Keyword: USA Place_Keyword: Colorado Place_Keyword: Eagle County Place_Keyword: Vail Stratum: Stratum_Keyword_Thesaurus: none Stratum_Keyword: Maroon Stratum_Keyword: Minturn Stratum_Keyword: Parting Stratum_Keyword: Peerless Stratum_Keyword: Sawatch 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: Karl Kellogg Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing and physical address Address: Mail Stop 980 Box 25046, Denver Federal Center City: Denver State_or_Province: CO Postal_Code: 80225-0046 Country: USA Contact_Voice_Telephone: 303-236-1305 Contact_Facsimile_Telephone: 303-236-0214 Contact_Electronic_Mail_Address: kkellogg@usgs.gov Browse_Graphic: Browse_Graphic_File_Name: http://pubs.usgs.gov/mf/2003/mf-2375/mf-2375.pdf Browse_Graphic_File_Description: graphic representation of map layout Browse_Graphic_File_Type: PDF Data_Set_Credit: Assisted in the field by G. Murray Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Data was entered and checked by the geologist who made the 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 was been thoroughly reviewed for conformity with U.S. Geological Survey editorial standards and stratigraphic nomenclature. Logical_Consistency_Report: Map elements were visually checked by the author for overshoots, undershoots, duplicate features, polygon attributes, and other errors. Automated (ARC/INFO) 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. The map was reviewed by two other geologists for consistency with basic geologic principles and general conformity to USGS mapping standards. Completeness_Report: Data are complete: no features were eliminated or generalized, at the scale of map compilation (1:24,000) Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: Lines were primarily mapped by ground investigation and photointerpretation of 1:24,000-scale color aerial photographs. These lines were digitized from the topographic field sheets and from annotated aerial photographs. Most digitized positions on the map are estimated to have about 20 m horizontal accuracy. Additional point observations were added using positions determined by a Rockwell PLGR-96 GPS unit with horizontal accuracy of about 10 meters. There is no elevation data in the database. 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: 2000 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: 2000 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: 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: 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: 2002 Spatial_Data_Organization_Information: Direct_Spatial_Reference_Method: Vector Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Map_Projection: Map_Projection_Name: Lambert Conformal Conic Lambert_Conformal_Conic: Standard_Parallel: 39.75 Standard_Parallel: 38.45 Longitude_of_Central_Meridian: -105.5 Latitude_of_Projection_Origin: 0 False_Easting: 0 False_Northing: 0 Planar_Coordinate_Information: Planar_Coordinate_Encoding_Method: coordinate pair Coordinate_Representation: Abscissa_Resolution: 1.397349953651 Ordinate_Resolution: 1.397349953651 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: vaileastgeol --------------------------------------------------------------------------------------------------------------------------------------- DATABASE STRUCTURE OF VAILEASTGEOL.PAT COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED? 1 AREA 4 12 F 3 - 5 PERIMETER 4 12 F 3 - 9 VAILEASTGEOL# 4 5 B - - 13 VAILEASTGEOL-ID 4 5 B - - 17 SYMBOL 4 4 I - S - 21 LABEL 6 6 C - L - 27 UNIT 5 5 C - - 32 DESCRIPTION 100 100 C - D - DESCRIPTIONS OF ITEM NAMES LABEL: Geologic unit label with symbols for unique geologic fonts. UNIT: Geologic unit label with letters for unique geologic fonts. SYMBOL: Numbers given to map units representing values of color used from shadeset "color524.shd". DESCRIPTION: Brief geologic explanations of map units. UNIT DESCRIPTION ---- ------------------------------------------------------------------- Cp Peerless Formation (Upper Cambrian) Cs Sawatch Quartzite (Upper Cambrian) Dp Parting Formation (Upper Devonian) PPm Maroon Formation (Permian and Pennsylvanian) Pm Minturn Formation, undifferentiated (Middle Pennsylvanian) Pmj Jacque Mountain Limestone Member of Minturn Formation Pml Lower member of Minturn Formation Pmls Limestone bed of Lower member Pmm Middle member of Minturn Formation Pmr Robinson Limestone Member of Minturn Formation Pmrl Limestone bed of Robinson Member Pmu Upper member of Minturn Formation Pmwq White Quail Limestone Member of Minturn Formation Qa Alluvium (Holocene) Qac Alluvium and colluvium, undivided (Holocene and upper Pleistocene) Qbf Boulder field (upper Pleistocene) Qc Colluvium (Holocene and upper Pleistocene) Qd Diamicton (middle to lower Pleistocene) Qdf Debris-flow deposits (Holocene and upper Pleistocene) Qf Fan deposits (Holocene and upper Pleistocene) Qfm Felsenmeer (Holocene and Pleistocene) Qls Landslide deposits (Holocene and upper Pleistocene) Qlsy Recent landslide deposits (Holocene) Qr Rock-glacier deposits (Holocene and upper Pleistocene) Qt Talus (Holocene and upper Pleistocene) Qtb Till of Bull Lake glaciation (middle Pleistocene) Qtb? Till of Bull Lake glaciation (middle Pleistocene), queried Qtp Till of Pinedale glaciation (upper Pleistocene) Qtp? Till of Pinedale glaciation (upper Pleistocene), queried Qw Wetland deposits (Holocene and upper Pleistocene) Xap Aplitic granite (Early Proterozoic) Xbg Biotite gneiss (Early Proterozoic) Xdi Diorite (Early Proterozoic) Xg Cross Creek Granite (Early Proterozoic) Xgb Gabbro (Early Proterozoic) Xm Migmatitic biotite gneiss (Early Proterozoic) af Artificial fill (Holocene) s Snowfield (Holocene) w Body of water DATABASE STRUCTURE OF VAILEASTGEOL.AAT COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED? 1 FNODE# 4 5 B - - 5 TNODE# 4 5 B - - 9 LPOLY# 4 5 B - - 13 RPOLY# 4 5 B - - 17 LENGTH 4 12 F 3 - 21 VAILEASTGEOL# 4 5 B - - 25 VAILEASTGEOL-ID 4 5 B - - 29 DESCRIPTION 80 80 C - D - DESCRIPTIONS OF ITEM NAMES DESCRIPTION: Description of line features, using digital cartographic standards DESCRIPTION ------------------------------------------------------------- clastic dike-certain contact-approximately located contact-certain dike-certain fault-approximately located fault-certain map boundary normal fault-approximately located normal fault-certain reverse fault-approximately located reverse fault-certain shear zone shoreline strike-slip fault, left-lateral offset-approximately located strike-slip fault, left-lateral offset-certain thrust fault-certain ------------------------------------------------------------------------------------------------------------------------------------ COVERAGE NAME: vaileastline ------------------------------------------------------------------------------------------------------------------------------------ DATABASE STRUCTURE OF VAILEASTLINE.AAT: COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED? 1 FNODE# 4 5 B - - 5 TNODE# 4 5 B - - 9 LPOLY# 4 5 B - - 13 RPOLY# 4 5 B - - 17 LENGTH 4 12 F 3 - 21 VAILEASTLINE# 4 5 B - - 25 VAILEASTLINE-ID 4 5 B - - 29 DESCRIPTION 80 80 C - D - DESCRIPTIONS OF ITEM NAMES DESCRIPTION: Description of line features, using digital cartographic standards DESCRIPTION ------------------------------------------------------------------------------------------------------------------------------------- anticline-certain contact-concealed cross-section line dike or sill-certain fault-concealed horizontal anticline-concealed horizontal syncline-certain horizontal syncline-concealed limestone bed line reverse fault-concealed thrust fault-concealed ------------------------------------------------------------------------------------------------------------------------------------------ COVERAGE NAME: vaileastpoint ------------------------------------------------------------------------------------------------------------------------------------------- DATABASE STRUCTURE OF VAILEASTPOINT.PAT COLUMN ITEM NAME WIDTH OUTPUT TYPE N.DEC ALTERNATE NAME INDEXED? 1 AREA 4 12 F 3 - 5 PERIMETER 4 12 F 3 - 9 VAILEASTPOINT# 4 5 B - - 13 VAILEASTPOINT-ID 4 5 B - - 17 ROTATION 7 7 I - - 24 INCLINATION 5 5 I - - 29 DESCRIPTION 80 80 C - D - DESCRIPTIONS OF ITEM NAMES: ROTATION: Compass direction of bedding trend, in degrees. INCLINATION: Angle of bedding dip, in degrees from horizontal. DESCRIPTION Brief geologic explanation of point type, using digital cartographic standards DESCRIPTION ------------------------------------------------------------------------------------------------------------------------------------- fault dip symbol fold plunge arrow horizontal bedding inclined bedding - showing approximate strike and dip inclined bedding - showing strike and dip inclined foliation - showing strike and dip inclined joints - showing strike and dip left lateral symbol lineation arrows minor inclined fault - showing strike and dip minor vertical or near-vertical fault - showing strike overturned bedding - showing strike and dip vertical bedding vertical foliation - showing strike ITEM VALUES FOR 'ROTATION: range of values: 0 - 359 ITEM VALUES FOR 'INCLINATION': range of values: 0 - 90 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: Central Publications Group Address: U.S. Geological Survey Address: MS 902, Box 25046 DFC City: Lakewood State_or_Province: CO Postal_Code: 80225-0046 Contact_Voice_Telephone: 303-236-5486 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, SHP Format_Version_Number: 7.12 Format_Version_Date: 1997 File_Decompression_Technique: GZIP compressed TAR file (Unix), ZIP archive (Windows) Digital_Transfer_Option: Online_Option: Computer_Contact_Information: Network_Address: Network_Resource_Name: http://pubs.usgs.gov/mf/2003/mf-2375/ Fees: 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-2375 (Map-on-Demand) Distribution_Liability: None Standard_Order_Process: Non-digital_Form: Available as one printed sheet plus one pamphlet. Order from USGS at the address listed above or see http://rmmcweb.cr.usgs.gov/public/mod/order.html for more ordering information. Fees: for current charges please see http://rmmcweb.cr.usgs.gov/public/mod/order.html Metadata_Reference_Information: Metadata_Date: 20020208 Metadata_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: Paco VanSistine Contact_Organization: U.S. Geological Survey Contact_Address: Address_Type: mailing address Address: U.S. Geological Survey Address: MS 980, Box 25046 DFC City: Lakewood State_or_Province: CO Postal_Code: 80225-0046 Contact_Voice_Telephone: 303-236-5452 Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998