Distribution and quality of potential sources of aggregate infrastructure resources project area, Colorado-Wyoming

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Frequently anticipated questions:


What does this data set describe?

Title:
Distribution and quality of potential sources of aggregate infrastructure resources project area, Colorado-Wyoming
Abstract:
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.
  1. How might this data set be cited?
    Langer, William H., Green, Gregory N., Daniel H. Knepper, Jr., Lindsey, David A., Moore, David W., Nealey, David, and John C. Reed, Jr., 1997, Distribution and quality of potential sources of aggregate infrastructure resources project area, Colorado-Wyoming: U.S. Geological Survey Open-File Report 97-477, U.S. Geological Survey, Denver, Colorado.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -105.528
    East_Bounding_Coordinate: -104.0
    North_Bounding_Coordinate: 41.43972
    South_Bounding_Coordinate: 37.761
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 1997
    Currentness_Reference:
    publication date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: map
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a vector data set. It contains the following vector data types (SDTS terminology):
      • entity point
      • complete chain
      • GT-polygon composed of chains
    2. What coordinate system is used to represent geographic features?
  7. How does the data set describe geographic features?
    COLO_GEO.PAT
    Colorado geological map (Source: OFR-97-0477)
    LITHO
    Lithology of geologic rock units (Source: OFR-97-0477)
    ValueDefinition
    andesite 
    ash flow 
    ash flow-andesite 
    ash flow-latite 
    basalt 
    carbsCarbonate rock
    cemented s&gcemented sand and gravel
    coarse granite 
    conglomerate 
    felsic intrusive 
    gabbro&syenite 
    glacial 
    gneiss 
    gneiss$schist 
    granite 
    landslide 
    mixed carbsmixed carbonate rocks
    mixed sedsMixed sedimentary rocks
    mixed shale 
    quartzite 
    s&gsand and gravel
    sand 
    sandstone 
    shale 
    tuff 
    water 
    wx granite 
    PHYS
    Physical quality (Source: OFR-97-0477)
    ValueDefinition
    fairfair physical qualities
    poorPoor physical qualities
    satSatisfactory physical quality
    unknownUnknown physical qualities
    unsuitUnsuitable physical qualities
    CHEM
    Chemical qualities (Source: OFR-97-0477)
    ValueDefinition
    incInnocuous chemical quality
    delDeleterious chemical quality
    (blank)unknown chemical quality
    NAME
    Geologic unit symbol (Source: OFR-97-0477)
    COLO_GEO.PAT
    Geological units at specific locations (same attributes as polygon coverage COLO_GEO.PAT) (Source: OFR-97-0477)
    COLO_LIN.AAT
    Linear geologic map units (Source: OFR-97-0477)
    NAME
    Geologic map unit name (Source: OFR-97-0477)
    ValueDefinition
    TKi 
    Tmi 
    Yam 
    WYO_GEO.PAT
    Wyoming geological map (Source: OFR-97-0477)
    LITHO
    Lithology of rock unit (Source: OFR-97-0477)
    ValueDefinition
    anorthosite 
    cemented s&gCemented sand and gravel
    gneiss 
    granite 
    mixed sedsMixed sedimentary rocks
    s&gsand and gravel
    sandstone 
    shale 
    PHYS
    Physical quality (Source: OFR-97-0477)
    ValueDefinition
    poorPoor physical quality
    satSatisfactory physical quality
    unknownUnknown physical quality
    unsuitUnsuitable physical quality
    CHEM
    Chemical qualities (Source: OFR-97-0477)
    ValueDefinition
    incInnocuous chemical quality
    (blank)unknown chemical quality
    unknownUnknown chemical quality
    NAME
    Geologic unit symbol (Source: OFR-97-0477)
    WYO_GEO.PAT
    Wyoming geological units at specific locations (same attributes as polygon coverage WYO_GEO.PAT) (Source: OFR-97-0477)

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • William H. Langer
    • Gregory N. Green
    • Daniel H. Knepper, Jr.
    • David A. Lindsey
    • David W. Moore
    • David Nealey
    • John C. Reed, Jr.
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Langer, William H
    USGS-GEO-CRG-MRS
    Mail Stop 973, USGS
    P.O. Box 25046
    Denver, CO
    US

    303-236-1249 (voice)
    blanger@usgs.gov

Why was the data set created?

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.

How was the data set created?

  1. From what previous works were the data drawn?
    Green (1992) (source 1 of 1)
    Green, G.N., 1992, The Digital Geologic Map of Colorado in ARC/INFO Format: U.S. Geological Survey Open-File Report 92-507.

    Type_of_Source_Media: online ARC/INFO files
    Source_Contribution: This digital database was used as a base map
  2. How were the data generated, processed, and modified?
    Date: 1995 (process 1 of 2)
    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).
    Date: 03-Aug-2000 (process 2 of 2)
    Creation of original metadata record Person who carried out this activity:
    Jennifer Lenz
    US Geological Survey
    12201 Surise Valley Drive, Mail Stop 918
    Reston, VA
    USA

    703-648-6974 (voice)
    703-648-6560 (FAX)
    pschweitzer@usgs.gov
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    complete
  5. How consistent are the relationships among the observations, including topology?
    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).

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: none
Use_Constraints: none
  1. Who distributes the data set? (Distributor 1 of 1)
    USGS Information Services
    Box 25286, Denver Federal Center
    Denver, Colorado
    USA

    1-888-ASK-USGS (voice)
    1-303-202-4695 (FAX)
    infoservices@usgs.gov
  2. What's the catalog number I need to order this data set? US Geological Survey Open-File Report 97-0477
  3. What legal disclaimers am I supposed to read?
    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.
  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 05-Feb-2016
Metadata author:
Peter N Schweitzer
USGS Midwest Area
Collection manager, USGS Geoscience Data Clearinghouse, http://geo-nsdi.er.usgs.gov/
Mail Stop 954
12201 Sunrise Valley Dr
Reston, VA
USA

703-648-6533 (voice)
703-648-6252 (FAX)
pschweitzer@usgs.gov
Metadata standard:
Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

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