Digital representation of the Washington 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 Washington state geologic map: a contribution to the Interior Columbia Basin Ecosystem Management Project
This report describes the digital representation of the Washington state geologic map (Hunting and others, 1961). This report contains an explanation of why the data were prepared, a desctiption of the digital data, and information on obtaining the digital files. 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 Project (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 Cascade Mountains.
  1. How might this data set be cited?
    Raines, Gary L., and Johnson, Bruce R., 1996, Digital representation of the Washington state geologic map: a contribution to the Interior Columbia Basin Ecosystem Management Project: U.S. Geological Survey Open-File Report 95-684.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -124.5
    East_Bounding_Coordinate: -115.0
    North_Bounding_Coordinate: 49.0
    South_Bounding_Coordinate: 45.5
  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: -121.0
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 0.0
      False_Northing: 0.0
      Planar coordinates are encoded using Coordinate pair
      Planar coordinates are specified in meters
      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.
      The flattening of the ellipsoid used is 1/294.98.
  7. How does the data set describe geographic features?
    Washington geologic map (Source: OFR-95-0684)
    Name of geologic map unit (no descriptions found) (Source: OFR-95-0684)
    Linear geologic features (Source: OFR-95-0684)
    Short name of line type (Source: OFR-95-0684)
    CONCertain contact
    CONUNCRScratch boundary
    FLTAPPXCNormal fault and contact whose position is not precisely known
    FLTCCertain fault and geologic contact
    FLTCNCLCConcealed fault at the same location as a geologic contact
    FLTTHRACThrust fault and contact whose position is not precisely known
    FLTTHRCCertain thrust fault with a geologic contact at the same position
    POLYBRKLocation of a polygon break
    Line type (Source: OFR-95-0684)
    contactLocation of a geologic contact
    faultLocation of a fault
    polybrkLocation of a polygon break
    Type of contact, fold, fault or other (Source: OFR-95-0684)
    N/ANot applicable
    normalNormal fault or contact
    thrustThrust fault
    scratchScratch boundary
    Positional Accuracy (Source: OFR-95-0684)
    N/ANot applicable
    certainObserved feature
    concealedConcealed feature
    approx. locatedLocation is not precisely known
    Denotes that arc is both a fault and a contact (Source: OFR-95-0684)
    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-95-0684)
    Washington geologic map units at specific locations (same attributes as polygon coverage WAGEOL.PAT) (Source: OFR-95-0684)
    Faults on geologic map (Source: OFR-95-0684)
    Fault type (Source: OFR-95-0684)
    normalNormal fault
    thrustThrust fault
    Positional Accuracy (Source: OFR-95-0684)
    certainObserved feature
    concealedConcealed feature
    approximateLocation is not precisely known
    FAULT_TYPE and ACCURACY combined as one attribute (Source: OFR-95-0684)

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Gary L. Raines
    • Bruce R. Johnson
  2. Who also contributed to the data set?
    We acknowledge the work of these geologists and the agencies that supported the previously compiled state geologic maps. 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 regoinal geology and the identification of unlabeled features on the published state geologic maps. We particularly 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?
    Raines, Gary Lee
    MacKay School Of Mines
    Reno, NV

    775-784-5596 (voice)

Why was the data set created?

To provide to the public a digital geologic map database of Washington State.

How was the data set created?

  1. From what previous works were the data drawn?
    Hunting and others (1961) (source 1 of 1)
    Hunting, M.T., Bennett, W.A., Livingston, V.E., Jr., and Moen, W.S., 1961, Geologic map of Washington: Washington Dept. of Conservation, Division of Mines and Geology.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 500000
    Source_Contribution: Scanned to create the digital geologic map database.
  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 coordinates, and finally, map distortions were removed by rubber-sheeting.
    Date: 19-Aug-2009 (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?
    189.092 meters (registration error (RMS))
  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?
    This digital geology map of Washington was scanned from the published geologic map (Hunting and others, 1961) at a scale of 1:500,000

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? U.S. Geological Survey Open-File Report 95-684
  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: 04-Feb-2015
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 Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)

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