Digital geologic map of the Rosalia 1:100,000 quadrangle, Washington and Idaho: a digital database for the 1990 S.Z. Waggoner map

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Frequently anticipated questions:


What does this data set describe?

Title:
Digital geologic map of the Rosalia 1:100,000 quadrangle, Washington and Idaho: a digital database for the 1990 S.Z. Waggoner map
Abstract:
The geology of the Rosalia 1:100,000 quadrangle, Washington and Idaho was compiled and published as a paper product by the Washington Division of Geology and Earth Resources (Waggoner, 1990). The U.S. Geological Survey converted the geologic data to a digital geographic information system (GIS) format as part of a larger effort to create regional digital geology for the Pacific Northwest. The digital geologic map database can be queried in many ways to produce a variety of derivative geologic maps.
Supplemental_Information:
This GIS consists of two major Arc/Info datasets: one line and polygon file (ros100k) containing geologic contacts and structures (lines) and geologic map rock units (polygons), and one point file (rospnt) containing structural data.
  1. How might this data set be cited?
    Derkey, Pamela D., Johnson, Bruce R., Lackaff, Beatrice B., and Derkey, Robert E., 1998, Digital geologic map of the Rosalia 1:100,000 quadrangle, Washington and Idaho: a digital database for the 1990 S.Z. Waggoner map: U.S. Geological Survey Open-File Report 98-357, U.S. Geological Survey, Spokane WA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -118.0
    East_Bounding_Coordinate: -117.0
    North_Bounding_Coordinate: 47.50
    South_Bounding_Coordinate: 47.00
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 1998
    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):
      • Point (630)
      • String (1973)
      • GT-polygon composed of chains (631)
    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
      Latitude_of_Projection_Origin: 0.0
      False_Easting: 500000
      False_Northing: 0.0
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest not determined
      Ordinates (y-coordinates) are specified to the nearest not determined
      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?
    Entity_and_Attribute_Overview:
    The 'Digital geologic map of the Rosalia 1:100,000 quadrangle...' Open-File Report 98-357 contains a detailed description of each attribute code and a reference to the associated map symbols on the map source materials. The GIS includes a geologic linework arc attribute table, ros100k.aat, that relates to the ros100k.con (contact look-up table), ros100k.str (structure look-up table), ros100k.lgu (linear geologic unit look-up table) and ros100k.ref (source reference look-up table) files; a rock unit polygon attribute table, ros100k.pat, that relates to the ros100k.ru (rock unit look-up table) and ros100k.ref (source reference look-up table) files; and a geologic map symbol point attribute table, rospnt.pat, that relates to the rospnt.sym (structural point data look-up tables) and rospnt.ref (source reference look-up table) files.
    Entity_and_Attribute_Detail_Citation: http://pubs.usgs.gov/of/1998/of98-357/of98-357.pdf

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Pamela D. Derkey
    • Bruce R. Johnson
    • Beatrice B. Lackaff
    • Robert E. Derkey
  2. Who also contributed to the data set?
    Stephanie Z. Waggoner (1990) compiled the geology onto stable-base material;
    A contractor (PacifiCad Inc., Spokane, WA) scanned the original stable-base geologic map (provided by the Washington Division of Geology and Earth Resources) and provided the U.S. Geological Survey (USGS) with an uncompressed TIFF file (reverse image, scanned at 600 dots per inch);
    Bruce R. Johnson (USGS) converted the image to a vector geographic information system (GIS);
    Pamela D. Derkey (USGS) and Beatrice B. Lackaff edited the vector data;
    Pamela D. Derkey generated a GIS file for the point data, attached and attributed an interim geologic map data model (database).
    Robert E. Derkey (WA DGER) digitized the point data and provided it in an Arc/Info GENERATE format file.
  3. To whom should users address questions about the data?
    Pamela D Derkey
    U.S. Geological Survey, GEO-WRG-MRS
    W 904 Riverside Avenue
    Spokane, WA
    USA

    509-368-3114 (voice)
    509-368-3199 (FAX)
    pderkey@usgs.gov

Why was the data set created?

This dataset was developed to provide geologic map GIS of the Rosalia 1:100,000 quadrangle for use in future spatial analysis by a variety of users.
This database is not meant to be used or displayed at any scale larger than 1:100,000 (e.g., 1:62,500 or 1:24,000).

How was the data set created?

  1. From what previous works were the data drawn?
    Waggoner, 1990 (source 1 of 2)
    Waggoner, S.Z., 1990, Geologic map of the Rosalia 1:100,000 quadrangle, Washington-Idaho: Washington Division of Geology and Earth Resources, Olympia, WA.

    Type_of_Source_Media: stable-base film positive
    Source_Scale_Denominator: 100,000
    Source_Contribution:
    Waggoner (1990) is the sole source of geologic data in this digital geographic information system (GIS).
    USGS, 1993 (source 2 of 2)
    U.S. Geological Survey, 1993, 1:100,000-scale digital line graph (DLG) data - hydrography and transportation, Area 13 -- Northwestern states: U.S. Geological Survey Digital Line Graph, U.S. Geological Survey.

    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: 100,000
    Source_Contribution: This source provided hydrography in a digital format.
  2. How were the data generated, processed, and modified?
    Date: 1996 (process 1 of 2)
    Stable-base geologic map was scanned at 600 dots per inch by a contractor (PacifiCad, Inc., Spokane, WA) and provided to the U.S. Geological Survey as reverse TIFF-format image. The image was registered to a UTM grid and rectified in Arc/Info. Then it was converted to a vector GIS layer using the GRIDLINE vectorization tool included in the Arc/Info GRID extension. Subsequent clean-up of the vector layer was done in PC Arc/Info. Linework for water bodies that obscured geologic contacts was converted from digital line graph (DLG) format files (USGS, 1993) to PC Arc/Info so as to delineate discrete geologic unit boundaries. The resulting geologic map was attributed, converted to Arc/Info, and then plotted and compared to the original.
    Point data were digitized from the original stable-base map into GSMAP, ver. 9 (Selner and Taylor, 1993) as points in a UTM zone 11 map projection (with a y-shift of -5,000,000 meters). These point data ewre output to Arc/Info GENERATE-format files using the GSMGIS utility (G.I. Selner, written commun., 1994). An Arc/Info point location map was then generated, attributed and annotated.
    Date: 20-Jul-1998 (process 2 of 2)
    Creation of original metadata record Person who carried out this activity:
    Pamela D Derkey
    U.S. Geological Survey, GEO-WRG-MRS
    W 904 Riverside Avenue
    Spokane, WA
    USA

    509-368-3114 (voice)
    509-368-3199 (FAX)
    pderkey@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?
    Attribute accuracy was verified by manual comparison of the source with hard copy printouts and plots.
  2. How accurate are the geographic locations?
    The horizontal positional accuracy for the digital data may be no better than +/- 70 meters. It was tested by visual comparison of the source with hard copy plots.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    This digital dataset was produced from a previously published report (Waggoner, 1990), and is considered to be the best geologic map available for the area at a scale of 1:100,000.
  5. How consistent are the relationships among the observations, including topology?
    Polygon and chain-node topology present. Polygons intersecting the neatline are closed along the border. Segments making up the outer and inner boundaries of a poygon tie end-to-end to completely enclose the area. Line segments are a set of sequentially numbered coordinate pairs. No duplicate features exist nor duplicate points in a data string. Intersecting lines are separated into individual line segments at the point of intersection. Point data are represented by two sets of coordinate pairs, each with the same coordinate values. All nodes are represented by a single coordinate pair which indicates the beginning or end of a line segment. The neatline was generated by mathematically generating the four sides of the quadrangle, densifying the lines of latitude and projecting the file to UTM zone 11 (with a y-shift).

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints:Use_Constraints:
This digital database is not meant to be used or displayed at any scale larger than 1:100,000 (e.g., 1:62,500 or 1:24,00).
Any hardcopies utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. User specifically agrees not to misrepresent these data sets, 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)
    U.S. Geological Survey Information Services
    Open-File Reports, Box 25286
    Denver, CO
    USA

    1-303-202-4200 (voice)
    1-303-202-4693 (FAX)
  2. What's the catalog number I need to order this data set?
  3. What legal disclaimers am I supposed to read?
    The U.S. Geological Survey (USGS) provides these geographic data "as is." The USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. 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 these data have been processed successfully on computers at the USGS, no warranty, expressed or implied, is made by the USGS regarding the use of these 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 of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by USGS.
    This digital geologic map GIS of the Rosalia 1:100,000 quadrangle, Idaho, is not meant to be used or displayed at any scale larger than 1:100,000 (e.g., 1:62,500 or 1:24,000).
  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)

This page is <https://geo-nsdi.er.usgs.gov/metadata/open-file/98-357/metadata.faq.html>
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