Digital representation of the Idaho state geologic map: a contribution to the Interior Columbia Basin Ecosystem Management Project

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Frequently anticipated questions:

What does this data set describe?

Digital representation of the Idaho state geologic map: a contribution to the Interior Columbia Basin Ecosystem Management Project
This report provides digital representation of the Idaho state geologic map (Bond and Wood, 1978). This report is one in a series of digital maps, data files, and reports generated by the US Geological Survey to provide geologic process and mineral resource information to the Interior Columbia Basin Ecosystem Management (ICBEMP). The various digital maps and data files are being used in a GIS-based ecosystem assessment including an analysis of diverse questions relating to past, present, and future conditions within the general area of the Columbia River Basin east of the Cascase Mountains.
  1. How might this data set be cited?
    Johnson, Bruce R., and Raines, Gary L., 1995, Digital representation of the Idaho state geologic map: a contribution to the Interior Columbia Basin Ecosystem Management Project: U.S. Geological Survey Open-File Report 95-0690.

    Online Links:

    Other_Citation_Details: ARC/INFO export format (4MB for all files).
  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -117.24
    East_Bounding_Coordinate: -111.05
    North_Bounding_Coordinate: 49.0
    South_Bounding_Coordinate: 42.0
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 1995
    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.
    2. What coordinate system is used to represent geographic features?
      The map projection used is Lambert Conformal Conic.
      Projection parameters:
      Standard_Parallel: 33.0
      Standard_Parallel: 45.0
      Longitude_of_Central_Meridian: -114.0
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 0.0
      False_Northing: 0.0
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest unknown
      Ordinates (y-coordinates) are specified to the nearest unknown
      Planar coordinates are specified in meters
  7. How does the data set describe geographic features?
    Idaho faults (Source: OFR-95-0690)
    Fault type (Source: OFR-95-0690)
    calderaFault associated with a caldera
    normalNormal fault
    thrustThrust fault
    Positional accuracy (Source: OFR-95-0690)
    certainObserved fault
    concealedConcealed fault whose position is inferred
    inferredFault whose position is inferred
    Combination of FAULT_TYPE and ACCURACY (Source: OFR-95-0690)
    Geologic map of Idaho (no explaination of map units found) (Source: OFR-95-0690)
    Linear features on geologic map (Source: OFR-95-0690)
    Short name of line type (Source: OFR-95-0690)
    CONCertain contact
    FLTCCertain fault and geologic contact
    FLTCNCLCConcealed fault at the same location as a geologic contact
    FLTINFCInferred fault with a geologic contact at the same position
    FLTTHRCCertain thrust fault with a geologic contact at the same position
    FOLDANTCCertain anticlinal fold axis that has the same position as a geologic contact
    FOLDOACCertain overturned anticlinal fold axis that shares the same position as a geologic contact
    FOLDSYNCCertain synclinal fold axis whose position is the same as a geologic contact
    LINEARCLinear feature
    POLYBRKLocation of a polygon break
    Line type (Source: OFR-95-0690)
    contactLocation of a geologic contact
    faultLocation of a fault
    foldLocation of a fold axis
    linearLocation of a linear feature
    polybrkLocation of a polygon break
    Type of contact, fold, fault or other (Source: OFR-95-0690)
    N/ANot applicable
    anticlineAnticlinal fold axis
    normalNormal fault or contact
    overturned anticlineOverturned anticlinal fold axis
    synclineSynclinal fold axis
    thrustThrust fault
    Positional Accuracy (Source: OFR-95-0690)
    N/ANot applicable
    certainObserved feature
    concealedConcealed feature
    inferredInferred feature
    Dnotes that arc is both a fault and a contact (Source: OFR-95-0690)
    yesArc is both fault and contact
    noArc is either fault or contact or none of the above
    LTYPE, MODIFIER, and ACCURACY combined as one attribute (Source: OFR-95-0690)
    Geologic map of Idaho at specific locations (no explaination of map units found) (Source: OFR-95-0690)

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Bruce R. Johnson
    • Gary L. Raines
  2. Who also contributed to the data set?
    Digital products such as this map would not exist without the geologic mapping of generations of geologists whose work contributed to the small-scale state geologic maps that have been published by most states. We gratefully acknowledge the work of the geologists and agencies that supported compilation of this map. Those agencies include the US Geological Survey and the Washington State Department of Natural Resources. USGS geologists, Thor Kiilsgaard and Fred Miller, provided useful advice about regional geology and the identification of unlabeled features on the published state geologic maps. We particularly wish to acknowledge Patrick Geehan, the Bureau of Land Management Project coordinator for the Interior Columbia River Basin Ecosystem Management Project, for recognizing the importance of geology to ecosystem management and for supplying funds to digitize the Washington map.
  3. To whom should users address questions about the data?
    Johnson, Bruce R
    Mail Stop 954, USGS
    12201 Sunrise Valley Drive
    Reston, VA

    703-648-6051 (voice)

Why was the data set created?

To provide a digital geologic map database of Idaho state to the public.

How was the data set created?

  1. From what previous works were the data drawn?
    Bond and Wood (1978) (source 1 of 1)
    Bond, J.G., and Wood, C.H., 1978, Geologic map of Idaho: Idaho department of lands, Bureau of Mines and Geology.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 500000
    Source_Contribution: Preliminary geologic map of Idaho
  2. How were the data generated, processed, and modified?
    Date: unknown (process 1 of 2)
    The map was processed digitally, as follows: the source material was scanned, the scanned image was vectorized and topologically structured, the lines and polygons were edited and proofed, attributes were added and proofed, the map was transformed from scanner units to geographic coordinate, and finally, map distortions were removed by rubber-sheeting. The initial objective was to obtain a digital representation that, when plotted, would overlay the source material within a line width; the digital version of the map meets this test.
    Date: 18-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

    703-648-6974 (voice)
    703-648-6560 (FAX)
  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?
    720 meters
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the observations, including topology?
    The USGS provided basin-wide, integrated, digital inmornation about bedrock lithology, compositional classifications of lithology, potential animal habitat, stream sediment geochemistry, volcanic and earthquake hazards, and mineral resources.

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)
    Cindy Dean
    Interior Columbia Basin Ecosystem Management Project
    112 E. Poplar Street
    Walla Walla, WA

    (509) 522-4030 (voice)
  2. What's the catalog number I need to order this data set? US Geological Survey Open-File Report 95-0690
  3. What legal disclaimers am I supposed to read?
    This report is preliminary and has not been reviewed for conformity with US Geological Survey editorial standards or with the North American Stratigraphic Code. Any use of trade, product, or firm names is for desciptive purposes only and does not imply endorsement by the US Government.
  4. How can I download or order the data?

Who wrote the metadata?

Last modified: 10-Jun-2016
Metadata author:
Peter N Schweitzer
USGS Midwest Area
Collection manager, USGS Geoscience Data Clearinghouse,
Mail Stop 954
12201 Sunrise Valley Dr
Reston, VA

703-648-6533 (voice)
703-648-6252 (FAX)
Metadata standard:
Content for Digital Geospatial Metadata (FGDC-STD-001-1998)

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