Gravity data from Dry Lake and Delamar Valleys, east-central Nevada

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Frequently anticipated questions:


What does this data set describe?

Title:
Gravity data from Dry Lake and Delamar Valleys, east-central Nevada
Abstract: Principal facts (gravity observations) for 185 new stations
  1. How might this data set be cited?
    Mankinen, Edward A., Chuchel, Bruce A., and Moring, Barry C., 2008, Gravity data from Dry Lake and Delamar Valleys, east-central Nevada: Open-File Report 2008-1299, Geological Survey (U.S.), Menlo Park, California.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -114.9963
    East_Bounding_Coordinate: -114.6298
    North_Bounding_Coordinate: 38.102
    South_Bounding_Coordinate: 37.2968
  3. What does it look like?
    http://pubs.usgs.gov/of/2008/1299/images/coverphoto.jpg (JPEG)
    Shaded-relief map of the study area, east-central Nevada. Topographic contour interval is 200 m, (355 x 580 pixels)
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 2008
    Currentness_Reference:
    publication date
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
    1. How are geographic features stored in the data set?
      This is a Point data set. It contains the following vector data types (SDTS terminology):
      • Entity point (184)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitude and longitude values are specified in decimal degrees. 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?
    table1.dbf
    Principal facts for new gravity stations, Dry Lake & Delamar Valleys, Nevada
    STATION
    Station name
    LONGITUDE
    Geographic longitude in decimal degrees
    LATITUDE
    Geographic latitude in decimal degrees
    ELEVATION
    Elevation in meters
    OBS_GRAV
    Observed gravity (mGal)
    FREE_AIR
    Free air anomaly (mGal)
    TOT_CORR
    Total terrain correction (mGal)
    COMPL_BOUG
    Complete Bouguer anomaly (mGal)
    ISOSTATIC
    Isostatic anomaly (mGal)

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Mankinen, Edward A.
    • Chuchel, Bruce A.
    • Moring, Barry C.
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Edward A Mankinen
    USGS WR SW GD
    345 Middlefield Road$Mail Stop 937
    Menlo Park, CA
    USA

    650-329-4669 (voice)
    650-329-4664 (FAX)
    emank@usgs.gov

Why was the data set created?

Cenozoic basins in eastern Nevada and western Utah constitute major ground-water recharge areas in the eastern part of the Great Basin, and our continuing studies are intended to characterize the geologic framework of the region. Prior to these investigations, regional gravity coverage was variable over the region, adequate in some areas and very sparse in others. The current study in Nevada provides additional high-resolution gravity along transects in Dry Lake and Delamar Valleys to supplement data we established previously in Cave and Muleshoe Valleys.

How was the data set created?

  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?

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


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? USGS Open-File Report 2008-1299
  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 editorial standards (or with the North American Stratigraphic Code). Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
  4. How can I download or order the data?

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/2008/1299/metadata.faq.html>
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