Surficial geology along the Spokane River, Washington and its relationship to the metal content of sediments (Idaho-Washington stateline to Latah Creek confluence): Geologic units

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Frequently anticipated questions:

What does this data set describe?

Title:
Surficial geology along the Spokane River, Washington and its relationship to the metal content of sediments (Idaho-Washington stateline to Latah Creek confluence): Geologic units
Abstract:
The Spokane River flows westward into eastern Washington out of the northern end of Lake Coeur d'Alene in northern Idaho. The river and lake lie downstream of the Coeur d'Alene mining district, where over 56 million metric tonnes of metal-enriched tailings were disposed into the Coeur d'Alene River between 1886 and 1968 (Long, 1998). Geochemical analyses of riverine sediments in the Spokane River by the Washington Dept of Ecology (Johnson, 1999), the US Geological Survey (Grosbois and others, 2001; Box and others, in prep.) and an EPA contractor (URS Greiner, 2000, 2001) have indicated that Spokane River sediments are variably enriched in metals derived from those tailings. In this report we present a surficial geologic map (plates 1 through 8) of the unconsolidated deposits within and along the Spokane River in eastern Washington between the Idaho stateline and the confluence with Latah Creek about 20 miles downstream. Existing sample datasets for sediments and soils in and along the Spokane River are also located on the map and the surficial geologic unit that was sampled is noted. This work was undertaken in cooperation with the Washington Department of Ecology and the Environmental Protection Agency.
Supplemental_Information:
The digital surficial geologic map of the Spokane River channel and its margins in Washington between the Idaho state line and the confluence of Latah Creek was compiled on a base of 1:12,000 scale Digital Orthophoto Quarter Quadrangles (DOQQs) from field maps prepared on 1:3,000 scale paper printouts of the DOQQs in August and September of 2000. The units are defined by the lithologic character of the surficial sediment and by their geomorphological settings.
The digital dataset discussed here (geol-units.met) consist of one ArcView shape file (srgeounits.shp/.sbn/.sbx/.shx/.dbf/.avl) that provide the polygon outlines and identify the underlying lithologic units, projected in UTM zone 11, North American Datum of 1927 (NAD27).
  1. How might this data set be cited?
    Box, Stephen E., and Wallis, John C., 2002, Surficial geology along the Spokane River, Washington and its relationship to the metal content of sediments (Idaho-Washington stateline to Latah Creek confluence): Geologic units: U.S. Geological Survey Open-File Report 02-126, U.S. Geological Survey, Menlo Park, CA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -117.5
    East_Bounding_Coordinate: -117
    North_Bounding_Coordinate: 47.75
    South_Bounding_Coordinate: 47.58
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2002
    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):
      • GT-polygon composed of chains (359)
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Universal Transverse Mercator
      Universal_Transverse_Mercator:
      UTM_Zone_Number: 11
      Transverse_Mercator:
      Scale_Factor_at_Central_Meridian: 0.9996
      Longitude_of_Central_Meridian: -117.0
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000.0
      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 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.
  7. How does the data set describe geographic features?
    srgeounits.dbf
    These polygon data represent the distribution of surficial geologic units in and along the Spokane River channel.
    UNIT
    Surficial geologic map unit designation of the polygon. String of width 16.
    ValueDefinition
    (no value) 
    QafArtificial fill rock
    QcbChannel scoured bedrock
    QciChannel bed beneath impounded reservoirs
    QcpLow-flow channel pool
    QcpbLow-flow channel pool with emergent boulders
    QcrbBoulder riffle in low-flow channel
    QcrcCobble riffle in low-flow channel
    Qgcc1Gravel, coarse cobble and boulder (>125mm), with little fines
    Qgcc2Gravel, coarse cobble and boulder (>125mm), with patches of sand
    Qgcc3Gravel, coarse cobble and boulder (>125mm), with patches of silt
    QgcfGravel, fine cobble (64-125mm)
    QgpcGravel, coarse pebble (20-64mm)
    QgpfGravel, fine pebble (2-20mm)
    QscGravel, coarse pebble (20-64mm)
    QscSand, sloping channel flank deposit
    QsfSand, floodplain bench deposit
    Qts1Sand and gravel deposits of the first (lowest) terrace
    Qts1Sand and gravel deposits of the second terrace
    Qts2Sand and gravel deposits of the second terrace
    Qts3Sand and gravel deposits of the third terrace
    UNIT_DESC
    A brief lithologic description of surficial geologic map unit. String of width 92.
    ValueDefinition
    (no value) 
    Artificial fill rock 
    Boulder riffle in low-flow channel 
    Channel bed beneath impounded reservoirs 
    Channel scoured bedrock 
    Cobble riffle in low-flow channel 
    Gravel, coarse cobble and boulder (>125mm), with little fines 
    Gravel, coarse cobble and boulder (>125mm), with patches of sand 
    Gravel, coarse cobble and boulder (>125mm), with patches of silt 
    Gravel, coarse pebble (20-64mm) 
    Gravel, fine cobble (64-125mm) 
    Gravel, fine pebble (2-20mm) 
    Low-flow channel pool 
    Low-flow channel pool with emergent boulders 
    Sand and gravel deposits of the first (lowest) terrace 
    Sand and gravel deposits of the second terrace 
    Sand and gravel deposits of the third terrace 
    Sand, floodplain bench deposit 
    Sand, sloping channel flank deposit 
    AREA
    Area of the polygon (in square meters). (Source: ArcView script)
    Range of values
    Minimum:58
    Maximum:564624
    Units:square meters
    Resolution:1
    ACRES
    Number of acres contained within the polygon. (Source: ArcView script)
    Range of values
    Minimum:0.0
    Maximum:139.5
    Units:acres
    PERIMETER
    The length of the polygon perimeter in meters. (Source: ArcView script)
    Range of values
    Minimum:39
    Maximum:22448
    Units:meters
    Resolution:1

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Stephen E. Box
    • John C. Wallis
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Stephen E. Box
    U.S. Geological Survey
    Geologist
    904 W. Riverside Ave., Rm 202
    Spokane, WA
    USA

    509-368-3106 (voice)
    509-368-3199 (FAX)
    sbox@usgs.gov
    Hours_of_Service: 9 - 5 Pacific Time Zone

Why was the data set created?

The digital map was prepared in cooperation with the Department of Ecology and the Environmental Protection Agency to aid in the interpretation of the distribution, sources, and transport processes of metal- enriched sediment in and along the Spokane River. These agencies are evaluating the relative metal enrichment in the riverine sediments due to concerns of potential health impacts to humans, waterfowl, and aquatic organisms.

How was the data set created?

  1. From what previous works were the data drawn?
    DRG (source 1 of 2)
    U.S. Geological Survey, 1997, Digital Raster Graphic (DRG): Digital Raster Graphic >47117f1 (1973), >47117f2 (1986), >47117f3 (1986), >47117f4 (1986), U.S. Geological Survey, Reston, VA.

    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: 24000
    Source_Contribution:
    DRGs were used in conjunction with DOQQs to digitize surficial geologic features that were mapped in the field.
    DOQQ (source 2 of 2)
    U.S. Geological Survey, 1992 and 1995, Digital Orthophoto Quarter Quadrangles (DOQQs): Digital Orthophoto Quadrangle >47117F11 (1992), >47117F12 (1992), >47117F13 (1992), >47117F14 (1992), >47117F21 (1995), >47117F22 (1995), >47117F23 (1995), >47117F24 (1995), >47117F31 (1995), >47117F32 (1995), >47117F33 (1995), >47117F34 (1995), >47117F41 (1995), >47117F42 (1995), >47117F43 (1995), >47117F44 (1995), U.S. Geological Survey, Reston, VA.

    Type_of_Source_Media: online
    Source_Scale_Denominator: 12000
    Source_Contribution:
    DOQQs were used as the geographic base map onto which the surficial geologic features, mapped in the field, were digitized.
  2. How were the data generated, processed, and modified?
    Date: 2000 (process 1 of 2)
    DOQQs were used in ArcView 3.1 to transfer the field notes, drawings, and map interpretations of Spokane River lithology into a GIS layer where polygons were digitized. Polygons were hand digitized on screen using DOQQs as theme overlays at scales of 1:12,000 and larger with a hand operated mouse in ArcView 3.1. Polygon line work was based on geologic mapping on 1:3,000 scale DOQQs printouts that were used for field maps.
    The ArcView script calcacre.ave was used to calculate the area (in square meters), the area in acres, and the perimeter (in meters) of all polygons in srgeounits.shp while projected in UTM NAD27. Person who carried out this activity:
    Stephen E. Box
    U.S. Geological Survey
    Geologist
    904 W. Riverside Ave., Rm 202
    Spokane, WA
    USA

    509-368-3108 (voice)
    509-368-3199 (FAX)
    sbox@usgs.gov
    Hours_of_Service: 9 - 5 Pacific Time Zone
    Date: 20-Mar-2002 (process 2 of 2)
    Creation of original metadata record Person who carried out this activity:
    John C. Wallis
    U.S. Geological Survey
    Contractor
    904 W. Riverside Ave., Rm 202
    Spokane, WA
    USA

    509-368-3108 (voice)
    509-368-3199 (FAX)
    jwallis@usgs.gov
    Hours_of_Service: 8:00 - 4:00 Pacific Time Zone
  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?
    The attribute accuracy was verified by manual comparison of source data with hard-copy printouts, plots, and on-screen evaluations.
  2. How accurate are the geographic locations?
    The horizontal positional accuracy for the digital data is accurate To within +/- 15 meters based on digitizing RMS error.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    The minimum mapped polygon size is approximately 50 square meters. Polygon data is based on the geologic interpretation of the lithology and surficial features observed in and along the Spokane River channel.
  5. How consistent are the relationships among the observations, including topology?
    These data are believed to be logically consistent, though no tests were performed.

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:
This digital dataset is not to be used or displayed at any scale larger than 1:12,000 (e.g., 1:6,000).
Any hardcopies utilizing this data set shall clearly indicate its source. If the users have modified the data in any way, they are obliged to describe the types of modifications they have performed. The user specifically agrees not to misrepresent this data set, nor to imply that changes they made were approved by the U.S. Geological Survey.
  1. Who distributes the data set? (Distributor 1 of 1)
    USGS Information Services
    Box 25286 Denver Federal Center
    Denver, CO
    USA

    1-888-ASK-USGS (voice)
    303-202-4693 (FAX)
    ask@usgs.gov
  2. What's the catalog number I need to order this data set? USGS Open-File Report 02-126
  3. What legal disclaimers am I supposed to read?
    The U.S. Geological Survey (USGS) provides these data "as is". The USGS makes no guarantee or warranty concerning the accuracy of the information contained in the data set. The USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although this data has been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of this data on any other system, nor does the fact of distribution constitute or imply any such warranty. In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including but not limited to, any loss of profits arising out of use or reliance on the geographic data or arising out of the delivery, installation, operation, or support by the USGS.
  4. How can I download or order the data?
    • Availability in digital form:
      Data format: Geologic units, sediment chemical data, and PDF version of report in format Shapefile (version 1.0) Size: 4.6
      Network links: http://pubs.usgs.gov/of/2002/0126/of02-126.ZIP
    • Cost to order the data: none

Who wrote the metadata?

Dates:
Last modified: 10-Jun-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)
This page is <https://geo-nsdi.er.usgs.gov/metadata/open-file/02-126/geol-units.faq.html>
Generated by mp version 2.9.48 on Tue Jul 03 20:06:04 2018