Crushed stone and sand and gravel are the main types of natural
aggregate used in the United States. Aggregate is used in nearly
all residential, commercial, and industrial building construction,
and in most public works projects including roads and highways,
bridges, railroad and light rail beds, airports, water and sewer
systems, and tunnels. Much of the infrastructure built during the
1950s and 1960s has deteriorated to a point that requires extensive
repair or replacement. All this construction requires enormous
amounts of aggregate. In Colorado, for example, nearly 45 million
tons of aggregate, or about 12 tons per person, were produced
during 1994.
Purpose:
Planners and other decision makers responsible for resource
management should find this map useful in regional planning and
land use management. Because statutory regulations, technological
capabilities, available funding, and land-use priorities vary from
place to place and can be expected to change with time, this map is
designed to provide a resource data base that will be useful over
the years. This map is in digital format and can be used with
other digital data sets, according to the specific needs of a
particular planning issue. As planning criteria change, the
selection of pertinent resource characteristics can be adjusted to
meet the changing needs.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1997
Currentness_Reference: publication date
Status:
Progress: complete
Maintenance_and_Update_Frequency: none planned
Access_Constraints: none
Use_Constraints: none
Keywords:
Theme:
Theme_Keyword_Thesaurus: National Geologic Map Database Catalog themes, augmented
Theme_Keyword: 3100 - Vector
Theme_Keyword: 1400 - Resources
Theme_Keyword: 3110 - ESRI
Theme_Keyword: 3112 - export
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: geoscientificInformation
Place:
Place_Keyword_Thesaurus: Augmented FIPS 10-4 and FIPS 6-4, version 1.0
Place_Keyword: 56001 = Albany
Place_Keyword: 56021 = Laramie
Place_Keyword: 08069 = Larimer
Place_Keyword: 08123 = Weld
Place_Keyword: 08013 = Boulder
Place_Keyword: 08001 = Adams
Place_Keyword: 08031 = Denver
Place_Keyword: 08059 = Jefferson
Place_Keyword: 08005 = Arapahoe
Place_Keyword: 08035 = Douglas
Place_Keyword: 08039 = Elbert
Place_Keyword: 08041 = El Paso
Place_Keyword: 08119 = Teller
Place_Keyword: 08093 = Park
Place_Keyword: 08043 = Fremont
Place_Keyword: 08101 = Pueblo
Place_Keyword: 08027 = Custer
Place_Keyword: 08055 = Huerfano
Place_Keyword: 08019 = Clear Creek
Place_Keyword: 08047 = Gilpin
Place_Keyword: 08015 = Chaffee
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Langer, William H
Contact_Organization: USGS-GEO-CRG-MRS
Contact_Address:
Address_Type: mailing and physical address
Address:
Mail Stop 973, USGS
P.O. Box 25046
City: Denver
State_or_Province: CO
Postal_Code: 80225
Country: US
Contact_Voice_Telephone: 303-236-1249
Contact_Electronic_Mail_Address:blanger@usgs.gov
Data_Quality_Information:
Logical_Consistency_Report:
This map was prepared by attributing the Digital Geologic Map of
Colorado - USGS Open File Report 92-0507 (Green, 1992) with
parameters reflecting the quality of unconsolidated materials and
bedrock for use as aggregate (sand and gravel or crushed stone).
Completeness_Report: complete
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: Green, G.N.
Publication_Date: 1992
Title: The Digital Geologic Map of Colorado in ARC/INFO Format
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: U.S. Geological Survey Open-File Report
Issue_Identification: 92-507
Type_of_Source_Media: online ARC/INFO files
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1992
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Green (1992)
Source_Contribution: This digital database was used as a base map
Process_Step:
Process_Description:
This map was prepared by attributing the Digital Geologic Map of
Colorado - USGS Open File Report 92-0507 (Green, 1992) with
parameters reflecting the quality of unconsolidated materials and
bedrock for use as aggregate (sand and gravel or crushed stone).
The terminology and classification techniques used on this map
are briefly described above, and are described in more detail in
USGS Open File Report 95-582 (Langer and Knepper, 1995).
Process_Date: 1995-1997
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: entity point
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: complete chain
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: COLO_GEO.PAT
Entity_Type_Definition: Colorado geological map
Entity_Type_Definition_Source: OFR-97-0477
Attribute:
Attribute_Label: LITHO
Attribute_Definition: Lithology of geologic rock units
Attribute_Definition_Source: OFR-97-0477
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: andesite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ash flow
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ash flow-andesite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: ash flow-latite
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: basalt
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: carbs
Enumerated_Domain_Value_Definition: Carbonate rock
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: cemented s&g
Enumerated_Domain_Value_Definition: cemented sand and gravel
Resource_Description: US Geological Survey Open-File Report 97-0477
Distribution_Liability:
This report is preliminary and has not been reviewed for conformity
with U.S. Geological Survey (USGS) editorial standard nor with the
North American stratigraphic codes. Any use of trade, product, or
firm names is for descriptive purposes only and does not imply
endorsement by the USGS. Although these data have been used by the
USGS and have been successfully imported into data base programs, no
warranty, expressed or implied, is made by the USGS as to how
successfully or accurately the data can be imported into any specific
application software running on any specific hardware platform.
The fact of distribution shall not constitute any such warranty, and
no responsibility is assumed by the USGS in connection therewith.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ArcInfo export
Format_Version_Number: 7.x
Format_Information_Content: Geologic units and base map data
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
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