Geology of the greater Denver area, Front Range Urban Corridor, Colorado (denver)

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: GIS database by Theodore R. Brandt, David W. Moore, and Kyle E. Murray; Digital Cartography by Theodore R. Brandt
Publication_Date: 2004
Title:
Geology of the greater Denver area, Front Range Urban Corridor, Colorado (denver)
Edition: version 1.1
Geospatial_Data_Presentation_Form: Downloadable GIS Data
Publication_Information:
Publisher: U.S. Geological Survey
Online_Linkage: http://pubs.usgs.gov/ds/2006/193/
Larger_Work_Citation:
Citation_Information:
Originator: Donald E. Trimble
Originator: Michael N. Machette
Publication_Date: 1979
Title:
Geologic map of the greater Denver area, Front Range Urban Corridor, Colorado
Edition: version 1.1
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: USGS Miscellaneous Investigations Series
Issue_Identification: I-856-H
Publication_Information:
Publication_Place: Denver, Colorado, U.S.A.
Publisher: United States Geological Survey
Online_Linkage: http://pubs.usgs.gov/imap/i-856-h/
Description:
Abstract:
This digital map shows the areal extent of surficial deposits and rock
stratigraphic units (formations) as compiled by Trimble and Machette
from 1973 to 1977 and published in 1979 under the Front Range Urban
Corridor Geology Program.  Trimble and Machette compiled their
geologic map from published geologic maps and unpublished geologic
mapping having varied map unit schemes.  A convenient feature of the
compiled map is its uniform classification of geologic units that
mostly matches those of companion maps to the north (USGS I-855-G) and
to the south (USGS I-857-F).  Published as a color paper map, the
Trimble and Machette map was intended for land-use planning in the
Front Range Urban Corridor.  This map recently (1997-1999) was
digitized under the USGS Front Range Infrastructure Resources Project.
In general, the mountainous areas in the western part of the map exhibit
various igneous and metamorphic bedrock units of Precambrian age,
major faults, and fault brecciation zones at the east margin (5-20 km
wide) of the Front Range.  The eastern and central parts of the map
(Colorado Piedmont) depict a mantle of unconsolidated deposits of
Quaternary age and interspersed outcroppings of Cretaceous or
Tertiary-Cretaceous sedimentary bedrock.  The Quaternary mantle
comprises eolian deposits (quartz sand and silt), alluvium (gravel,
sand, and silt of variable composition), colluvium, and a few
landslides.  At the mountain front, north-trending, dipping Paleozoic
and Mesozoic sandstone, shale, and limestone bedrock formations form
hogbacks and intervening valleys.
Purpose:
This digital map can serve various purposes related to land-use planning
in the greater Denver metropolitan area.  For example, it shows
potential shallow aquifers and rock units that may be suitable for
waste disposal and aggregate mining.  The map distinguishes rock units
that are somewhat predictable (dependent on scale and uniformity of
the rock unit) in physical properties and mineral content, making the
map useful in planning.  Given this predictability, experts can use
the map to derive thematic maps that show the suitability of surficial
materials for various uses by man; or to derive maps that show areas
susceptible to certain hazards, for example, swelling soils, heaving
bedrock, and landslides.
The digital map is designed to provide geologic data at 1:100,000 scale
to address urban growth issues and to help resolve conflicts among
planned uses of the land.
Supplemental_Information:
Coverages included in this geospatial database:
denver: polygon coverage of geologic units and faults
geol_sfo.lin: lineset file that defines geologic line types in the
geologically themed coverages
wpgcmykg.shd: shadeset file that defines the cmyk values of colors
assigned to polygons in the geologically themed coverages
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1979
Currentness_Reference:
publication date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: none currently planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -105.3750000
East_Bounding_Coordinate: -104.6250000
North_Bounding_Coordinate: 40.00000000
South_Bounding_Coordinate: 39.37500000
Keywords:
Theme:
Theme_Keyword_Thesaurus: American Geological Institute Glossary of Geology
Theme_Keyword: Geologic map
Theme_Keyword: Quaternary deposits
Theme_Keyword: Rocky Flats Alluvium
Theme_Keyword: windblown sand
Theme_Keyword: eolian sand
Theme_Keyword: alluvial gravel
Theme_Keyword: landslide deposit
Theme_Keyword: geologic hazard
Theme_Keyword: land-use planning
Theme_Keyword: urban growth
Theme_Keyword: urban zoning
Theme_Keyword: aggregate
Theme_Keyword: mine subsidence
Theme_Keyword: Paleocene bedrock
Theme_Keyword: Arapahoe Formation
Theme_Keyword: Oligocene bedrock
Theme_Keyword: Wall Mountain Tuff
Theme_Keyword: Pierre Shale
Theme_Keyword: Dawson Formation
Theme_Keyword: Cretaceous rocks
Theme_Keyword: Denver Formation
Theme_Keyword: Paleozoic rocks
Theme_Keyword: Silver Plume quartz monzonite
Theme_Keyword: Pikes Peak granite
Theme_Keyword: Denver Creek granodiorite
Theme_Keyword: Precambrian rocks
Theme_Keyword: Golden Fault
Theme:
Theme_Keyword_Thesaurus: ArcIMS Metadata Server Theme Codes
Theme_Keyword: geoscientificInformation
Theme_Keyword: economy
Theme_Keyword: environment
Place:
Place_Keyword_Thesaurus: Board of Geographic Names
Place_Keyword: USA
Place_Keyword: United States of America
Place_Keyword: Colorado
Place_Keyword: Denver County
Place_Keyword: Jefferson County
Place_Keyword: Denver County
Place_Keyword: Adams County
Place_Keyword: Arapahoe County
Place_Keyword: Denver
Place_Keyword: Golden
Place_Keyword: Colorado Front Range
Place_Keyword: Colorado Piedmont
Place_Keyword: Front Range Urban Corridor
Place_Keyword: Douglas County
Place_Keyword: Elbert County
Access_Constraints: none
Use_Constraints:
none.  Acknowledgment of the U.S. Geological Survey would
be appreciated in products derived from these data.  Although software
enables the user to display images at various scales, map data in this
report should not be used at scales greater than 1:100,000.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Theodore R. Brandt
Contact_Address:
Address_Type: mailing address
Address:
MS 980, Box 25046 DFC
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Country: USA
Contact_Voice_Telephone: 303-236-1901
Contact_Facsimile_Telephone: 303-236-0214
Contact_Electronic_Mail_Address: tbrandt@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name: http://certmapper.cr.usgs.gov/data/frip/graphic/denver.jpg
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
Theodore R. Brandt, U.S. Geological Survey, served as GIS
coordinator in the creation of the GIS database and produced the digital
cartography.  David W. Moore, U.S. Geological Survey, assisted in proofing
the geologic data and producing metadata.  Kyle A. Murray and Erica L.
Koch, formerly of the U.S. Geological Survey, and Paco Van Sistine, U.S.
Geological Survey, assisted in the digitization of the GIS database.
Native_Data_Set_Environment:
Windows_2000, Intel ARC/INFO version 8.3
Cross_Reference:
Citation_Information:
Originator: Theodore R. Brandt
Originator: David W. Moore
Originator: Kyle E. Murray
Publication_Date: 2003
Title:
A Spatial Database of Bedding Attitudes to accompany Geologic Map of the greater Denver area, Front Range urban corridor, Colorado, by Donald E. Trimble and Michael N. Machette
Edition: version 1.0
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: USGS Open-File-Report
Issue_Identification: ofr-03-025
Publication_Information:
Publication_Place: Denver, Colorado, U.S.A.
Publisher: United States Geological Survey
Online_Linkage: http://pubs.usgs.gov/of/2003/ofr-03-025
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Geologic map unit linework was captured by hand
digitizing as well as heads-up digitizing of scans from the paper geologic
map and negatives as originally published in 1979.  The digital map was
assembled and edited in ARC/INFO.  Water bodies (reservoirs and lakes) shown
on the paper version of the map were digitized in the geologic map unit
polygon layer.  This was done to (1) ensure topology of geologic polygons
that closed on shorelines of reservoirs and other water bodies, and (2)
adhere to interpretations regarding which geologic unit(s) are under the
water bodies.  Attribute accuracy is tested by manually comparing hard copy
plots of the digital data with the previously published version of the paper
map.
Logical_Consistency_Report:
Map elements were visually checked for overshoots, undershoots, duplicate
features, and other errors.  The original Trimble and Machette published
paper map (USGS Map I-856-H Version 1.0) conformed with U.S. Geological
Survey editorial standards and stratigraphic nomenclature.  The digital
version of Map I-856-H (version 1.1) strictly follows this nomenclature and
was reviewed by another geologist and cartographer for consistency with
basic geologic principles and general conformity to USGS mapping standards.
ARC/INFO software was used to create topological relations among features.
Completeness_Report:
This report has been reviewed for conformity with U.S. Geological Survey
editorial standards and stratigraphic nomenclature.  Data are complete.
Properties and physical characteristics of geologic map units (rock-
stratigraphic and surficial units) are described in the text explanation
provided on the paper version of the map.  A digital base map coverage is
not included.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Most digitized positions on the map that depict distinct contacts between
rock formations in the field are estimated to be within about 50 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.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Bryant, Bruce
Publication_Date: 1974
Title:
Reconnaissance geologic map of the Conifer quadrangle, Jefferson County, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-597
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1974
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Bryant (1974a)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Bryant, Bruce
Publication_Date: 1974
Title:
Reconnaissance geologic map of the Pine quadrangle, Jefferson County, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-598
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1974
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Bryant (1974b)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Bryant B.H.,
Originator: Miller R.D., and
Originator: Scott G.R.
Publication_Date: 1973
Title:
Geologic map of the Indian Hills quadrangle, Jefferson County, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Geologic Quadrangle Map
Issue_Identification: GQ-1073
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1973
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Bryant and others (1973)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Hedge, C.E.
Publication_Date: 1969
Title:
A petrogenetic and geochronologic study of migmatites and pegmatites in the central Front Range
Series_Information:
Series_Name: Colorado School of Mines
Issue_Identification: unpublished Ph.D. thesis
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1969
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Hedge (1969)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Hedge, C.E.
Originator: Peterman, Z.E.
Originator: Braddock, W.A.
Publication_Date: 1967
Title:
Age of the major Precambrian regional metamorphism in the northern Front Range, Colorado
Series_Information:
Series_Name: Geological Society of America Bulletin
Issue_Identification: v. 78
Other_Citation_Details:
p. 551-558
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1967
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Hedge and others (1967)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Hoblitt, R.
Originator: Larson, E.
Publication_Date: 1975
Title:
Paleomagnetic and geochronologic data bearing on the structural evolution of the northeastern margin of the Front Range, Colorado
Series_Information:
Series_Name: Geological Society of America Bulletin
Issue_Identification: v. 86
Other_Citation_Details:
p. 237-242
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1975
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Hoblitt and Larson (1975)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Hunt, C.B.
Publication_Date: 1954
Title:
Pleistocene and Recent deposits in the Denver Area, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Bulletin
Issue_Identification: 996-C
Other_Citation_Details:
p. 91-140
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1954
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Hunt (1954)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Izett, G.A.
Originator: Scott, G.R.
Originator: Obradovich, J.D.
Publication_Date: 1969
Title:
Oligocene rhyolite in the Denver Basin, Colorado, in Geological Survey Research 1969
Series_Information:
Series_Name: U.S. Geological Survey Professional Paper
Issue_Identification: 650-B
Other_Citation_Details:
p. B12-B14
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1969
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Izett and others (1969)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Lindvall, R.M.
Publication_Date: 1972
Title:
Geologic map of the Arvada quadrangle, Adams, Denver, and Jefferson Counties, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-348
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1972
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Lindvall (1972)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Lindvall, R.M.
Publication_Date: 1976
Title:
Geologic map of the Fort Logan quadrangle, Denver and Jefferson Counties, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-831
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1976
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Lindvall (1976)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Lindvall, R.M.
Publication_Date: 1979
Title:
Geologic map of the Commerce City quadrangle, Adams and Denver Counties, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-1067
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1979
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Lindvall (1979)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Maberry, J.O.
Originator: Lindvall, R.M.
Publication_Date: 1972
Title:
Geologic map of the Parker quadrangle, Arapahoe and Douglas Counties, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Investigations Map
Issue_Identification: I-770-A
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1972
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Maberry and Lindvall (1972)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Maberry, J.O.
Originator: Lindvall, R.M.
Publication_Date: 1974
Title:
Geologic map and engineering data for the Highlands Ranch quadrangle, Arapahoe and Douglas Counties, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-631
Other_Citation_Details:
3 sheets
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1974
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Maberry and Lindvall (1974)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Machette, M.N.
Publication_Date: 1975
Title:
Geologic map of the Lafayette quadrangle, Adams, Boulder, and Jefferson Counties, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-656
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1975
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Machette (1975)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Malde, H.E.
Publication_Date: 1955
Title:
Surficial geology of the Louisville quadrangle, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Bulletin
Issue_Identification: 996-E
Other_Citation_Details:
p. 217-259
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1955
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Malde (1955)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Peterson, W.L.
Publication_Date: 1964
Title:
Geology of the Platte Canyon quadrangle, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Bulletin
Issue_Identification: 1181-C
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1964
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Peterson (1964)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Richardson, G.B.
Publication_Date: 1915
Title:
Castle Rock, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Atlas
Issue_Identification: Folio 198
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1915
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Richardson (1915)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Schwochow, S.D.
Publication_Date: 1972
Title:
Surficial geology of the Eastlake quadrangle, Adams County, Colorado
Series_Information:
Series_Name: Colorado School of Mines M.S. thesis
Issue_Identification: no. 1465
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1972
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Schwochow (1972)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Scott, G.R.
Publication_Date: 1961
Title:
Preliminary geologic map of the Indian Hills quadrangle, Jefferson County, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Investigations Map
Issue_Identification: I-333.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1961
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Scott (1961)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Scott, G.R.
Publication_Date: 1962
Title:
Geology of the Littleton quadrangle, Jefferson, Douglas, and Arapahoe Counties, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Bulletin
Issue_Identification: 1121-L
Other_Citation_Details:
53 p.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1962
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Scott (1962)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Scott, G.R.
Publication_Date: 1963
Title:
Quaternary geology and geomorphic history of the Kassler quadrangle, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Professional Paper
Issue_Identification: 421-A
Other_Citation_Details:
p. 1-70
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1963
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Scott (1963a)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Scott, G.R.
Publication_Date: 1963
Title:
Bedrock geology of the Kassler quadrangle, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Professional Paper
Issue_Identification: 421-B
Other_Citation_Details:
p. 71-125
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1963
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Scott (1963b)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Scott, G.R.
Publication_Date: 1972
Title:
Geologic map of the Morrison quadrangle, Jefferson County, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Investigations Map
Issue_Identification: I-790-A
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1972
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Scott (1972)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Scott, G.R.
Originator: Wobus, R.A.
Publication_Date: 1973
Title:
Reconnaissance geologic map of Colorado Springs and vicinity
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Field Studies Map
Issue_Identification: MF-482
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1973
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Scott and Wobus (1973)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Sheridan, D.M.
Originator: Maxwell, C.H.
Originator: Albee, A.L.
Originator: Van Horn, R.
Publication_Date: 1967
Title:
Geology and uranium deposits of the Ralston Buttes district, Jefferson County, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Professional Paper
Issue_Identification: 520
Other_Citation_Details:
121 p.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1967
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Sheridan and others (1967)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Sheridan, D.M.
Originator: Reed, J.C., Jr.
Originator: Bryant, B.H.
Publication_Date: 1972
Title:
Geologic map of the Evergreen quadrangle, Jefferson County Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Investigations Map
Issue_Identification: I-786-A
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1972
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Sheridan and others (1972)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Spencer, F.D.
Publication_Date: 1961
Title:
Bedrock geology of the Louisville quadrangle, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Geologic Quadrangle Map
Issue_Identification: GQ-151
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1961
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Spencer (1961)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Van Horn, Richard
Publication_Date: 1957
Title:
Bedrock geology of the Golden quadrangle, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Geologic Quadrangle Map
Issue_Identification: GQ-103
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1957
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Van Horn (1957)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Van Horn, Richard
Publication_Date: 1972
Title:
Surficial and bedrock geologic map of the Golden quadrangle, Jefferson County, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Miscellaneous Investigations Map
Issue_Identification: I-761-A
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1972
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Van Horn (1972)
Source_Contribution:
geologic data source
Source_Information:
Source_Citation:
Citation_Information:
Originator: Wells, J.D.
Publication_Date: 1967
Title:
Geology of the Eldorado Springs quadrangle, Boulder and Jefferson Counties, Colorado
Series_Information:
Series_Name: U.S. Geological Survey Bulletin
Issue_Identification: 1221-D
Other_Citation_Details:
85 p.
Type_of_Source_Media: paper
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1967
Source_Currentness_Reference:
publication date
Source_Citation_Abbreviation:
Wells (1967)
Source_Contribution:
geologic data source
Process_Step:
Process_Description:
The geology for the published paper map was compiled by
Donald Trimble and Michael Machette.
Process_Date: 1977
Process_Step:
Process_Description:
The geologic database was compiled using ARC/INFO.
Subsequent to this original compilation, we edited and corrected the
database by digitizing directly into ARC/INFO from optical enlargements of
the original published map.  An average RMS error of 0.003 inches or
better was achieved in digitizing these features.
Process_Date: 1999
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
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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: .9996
Longitude_of_Central_Meridian: -105.00
Latitude_of_Projection_Origin: 0.00
False_Easting: 500000.00
False_Northing: 0.00
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.001
Ordinate_Resolution: 0.001
Planar_Distance_Units: METERS
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: GRS1980
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98
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Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
The data is supplied in ARC/INFO export format and ArcView shapefile format.
DATABASE STRUCTURE - ARC/INFO ====================================
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.  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.  Arc/Info
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.

denver coverage:  Contains all contact lines and label points for each
geologic polygon.  In the denver.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 denver.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 using the GeoAge
version 1.2 font, used to indicate the rock unit label 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 shadeset symbol used by ArcInfo to
plot a patterned polygon.  The symbol numbers in this item refer to the
plotter.shd shadeset included with ArcInfo V.8.1.
In the denver.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 which are described in the denver.con file.
Linecodes greater than 100 are used for structures that are described in
the denver.str file.  The NAME item lists the name given to structural
feature.  The SOURCE item lists the numeric code used to identify the data
source for the linear feature.  Complete references for the sources are
listed in the denver.ref file.
Related look-up table files are denver.con, denver.str, denver.ru, and
denver.ref.  In the denver.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 denver.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.  In the denver.ru INFO file, the UNIT item
refers to the numeric code used to identify the rock unit.  The LABEL item
refers to the rock unit label (abbreviation) used to label unit on map.
The DESC1 item lists the formal or informal unit name.  The DESC2 item
contains a parsed portion of the description of the unit.  The DESC3 item
contains a parsed portion of the description of the unit.  The DESC4 item
contains a parsed portion of the description of the unit.  In the
denver.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.

The INFO structure of these files is listed below:
>DENVER.PAT:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  AREA                   8    18     F      5
>    9  PERIMETER              8    18     F      5
>   17  DENVER#                4     5     B      -
>   21  DENVER-ID              4     5     B      -
>   25  SOURCE                 4     4     I      -
>   29  LABEL                 10    10     C      -
>   39  MLABEL                10    10     C      -
>   49  DESC                 100   100     C      -
>  149  SYMBOL                 3     3     I      -
>  152  PATTERN                4     4     I      -
>DENVER.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  DENVER#                4     5     B      -
>   29  DENVER-ID              4     5     B      -
>   33  LINECODE               3     3     I      -
>   36  NAME                  80    80     C      -
>  116  SOURCE                 4     4     I      -
>  120  SYMBOL                 3     3     I      -
>DENVER.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      -
>DENVER.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      -
>DENVER.RU:
>
>COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
>    1  LABEL                 10    10     C      -
>   11  DESC1                200   200     C      -
>  211  DESC2                200   200     C      -
>  411  DESC3                200   200     C      -
>  611  DESC4                200   200     C      -
>DENVER.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      -

>Coding of LABEL and DESC attributes in the denver coverage:
>LABEL       |   DESC
>Cr          |   Unnamed rocks (Cambrian)
>Fault zone  |   Fault zone - Zone of intense fault brecciation, usually
associated with numerous en echelon faults
>JPml        |   Morrison, Ralston Creek, and Lykins Formations,
undifferentiated (Upper Jurassic to Upper Permian)
>Jmr         |   Morrison and Ralston Creek Formations (Upper Jurassic)
>Kcgg        |   Carlile Shale, Greenhorn Limestone, and Graneros Shale,
undifferentiated (Upper Cretaceous)
>Kd          |   Dakota Group (Lower Cretaceous)
>Kf          |   Fox Hills Sandstone (Upper Cretaceous)
>Kl          |   Laramie Formation (Upper Cretaceous)
>Kn          |   Niobrara Formation (Upper Cretaceous)
>Kp          |   Pierre Shale (Upper Cretaceous)
>PPf         |   Fountain Formation (Lower Permian to Middle Pennsylvanian)
>PPfl        |   Lyons Sandstone and Fountain Formation, undifferentiated
>Ply         |   Lyons Sandstone (Permian)
>Qb          |   Broadway Alluvium (upper Pleistocene)
>Qco         |   Colluvium (upper Holocene)
>Qes         |   Windblown sand (lower Holocene to upper Pleistocene)
>Ql          |   Loess (upper Pleistocene)
>Qlo         |   Louviers Alluvium (upper Pleistocene)
>Qls         |   Landslide deposits (Holocene to Middle? Pleistocene)
>Qn          |   Nussbaum Alluvium (Pleistocene)
>Qp          |   Post-Piney Creek and Piney Creek Alluvium (Upper Holocene)
>Qrf         |   Rocky Flats Alluvium (Pleistocene)
>Qs          |   Slocum Alluvium (Pleistocene)
>Qv          |   Verdos Alluvium (Pleistocene)
>TKd         |   Denver Formation (Paleocene and Upper Cretaceous)
>TKda        |   Dawson and Arapahoe Formations (Paleocene to Upper
Cretaceous)
>TRPl        |   Lykins Formation (Lower Triassic and Upper Permian)
>Tcr         |   Castle Rock Conglomerate (lower Oligocene)
>Tg          |   High-level gravel deposits (Pliocene to Oligocene)
>Tgm         |   Green Mountain Conglomerate (Paleocene)
>Ts          |   Shoshonite (lower Paleocene)
>Twm         |   Wall Mountain Tuff (lower Oligocene)
>Xa          |   Amphibolite, hornblendite, and related rocks (Precambrian
X)
>Xbc         |   Boulder Creek Granodiorite (Precambrian X)
>Xfg         |   Felsic gneiss (Precambrian X)
>Xg          |   Gneiss (Precambrian X)
>Xq          |   Quartzite (Precambrian X)
>Xqm         |   Quartz monzonite (Precambrian X)
>Xs          |   Schist (Precambrian X)
>YXp         |   Pegmatite (Precambrian Y and X)
>Ypp         |   Pikes Peak Granite (Precambrian Y)
>Ysp         |   Silver Plume Quartz Monzonite (Precambrian Y)
>w           |   Open water

>Coding of LINECODE and NAME attributes in the boulder coverage:
>LINECODE  |     NAME
>   1      |     Contact - Certain
>  41      |     Shoreline
>  81      |     Map boundary
> 101      |     Fault - Certain
> 103      |     Fault - Concealed
> 171      |     Thrust fault - Certain
> 173      |     Thrust fault - Concealed
Entity_and_Attribute_Detail_Citation:
http://wrgis.wr.usgs.gov/open-file/of99-438/
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address:
Central Publications Group, MS 902 Box 25046, Denver Federal Center
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Contact_Voice_Telephone: 303-236-5486
Resource_Description: Downloadable Data
Distribution_Liability:
Although this digital spatial database 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 nor any
agency thereof, nor any employees thereof, makes any warranty, expressed or
implied, or assumes any legal liability or responsibility for the accuracy,
completeness, or usefulness of any information, apparatus, product, or process
disclosed in this report, or represents that its use would not infringe
privately owned rights.  Reference therein to any specific commercial product,
process, or service by trade name, trademark, manufacturer, or otherwise does
not necessarily constitute or imply its endorsement, recommendation, or
favoring by the United States Government or any agency thereof.  Any views and
opinions of authors expressed herein do not necessarily state or reflect those
of the United States Government or any agency thereof.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ArcInfo Export File
Format_Information_Content:
geology geographic features
Transfer_Size: 10.3 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://certmapper.cr.usgs.gov/data/frip/spatial/export/denvere.zip
Digital_Form:
Digital_Transfer_Information:
Format_Name: Shapefile
Format_Information_Content:
geology geographic features
Transfer_Size: 10.3 MB
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://certmapper.cr.usgs.gov/data/frip/spatial/shape/denver.zip
Digital_Form:
Digital_Transfer_Information:
Format_Name: Image Map Service (CO_FrontRange)
Format_Version_Number: 9.0
Format_Specification:
ArcIMS Image Map Service
Format_Information_Content:
A web-based interactive mapping system that accesses an ArcIMS Map Service running on certmapper.cr.usgs.gov.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://certmapper.cr.usgs.gov/pubs/servlet/MapViewerBroker?project=frip&Service=CO_FrontRange&OVMap=CO_overview
Access_Instructions:
This URL links to a web-based interactive mapping system that accesses an ArcIMS Image Map Service that runs in Netscape 4.7, Internet Explorer 4.5 and higher. The mapservice can also be accessed using any custom client that adheres to the protocol specified through ArcXML.
Digital_Form:
Digital_Transfer_Information:
Format_Name: ARCE,SHP
Format_Version_Number: 8.3
Format_Version_Date: 2003
File_Decompression_Technique: GZIP TAR archive, In UNIX use the command "gunzip -c <filename> | tar xvf -" In Windows, use WinZip (http://www.winzip.com/) or other programs to extract the file.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://pubs.usgs.gov/imap/i-856-h/
Fees: none
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Metadata_Reference_Information:
Metadata_Date: 2004
Metadata_Review_Date: 20050228
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Theodore Brandt
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address:
U.S. Geological Survey
Address:
MS 980, Box 25046 Denver Federal Center
City: Denver
State_or_Province: CO
Postal_Code: 80225-0046
Contact_Voice_Telephone: 303-236-1901
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
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