Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Locations of stress orientations

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Frequently anticipated questions:

What does this data set describe?

Title:
Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Locations of stress orientations
Abstract:
NOTE: Location of one point, near -88.65, 38.95, was incorrect when Sheet A was published. The location is .5 degree south, and is corrected in this dataset.
This cover contains locations of places where greatest horizontal compressive stress (S(Hmax)) orientations have been determined either by observation of well-bore breakouts or where focal mechanism solutions have been determined from earthquakes. Well-bore breakouts are observed from 0 to 1.4 km, whereas earthquakes generally occur deeper. The earthquake focal mechanisms show both reverse and strike-slip faulting. Overall the stress indicators show easterly trending S(Hmax).
  1. How might this data set be cited?
    Rhea, Susan, 1997, Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Locations of stress orientations: U.S. Geological Survey Open-File Report 97-0681, U.S. Geological Survey, Denver, CO.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -92.19999695
    East_Bounding_Coordinate: -87.40000153
    North_Bounding_Coordinate: 39.29999924
    South_Bounding_Coordinate: 35.20000076
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 1975
    Ending_Date: 1995
  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 Point data set. It contains the following vector data types (SDTS terminology):
      • Point (20)
      • String (3)
      • GT-polygon composed of chains (0)
    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 Unknown.
      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?
    STRESS.PAT
    stress orientations from well-bore breakouts and earthquakes (Source: Rhea)
    DIR
    direction, counterclockwise degrees (Source: Rhea)
    Range of values
    Minimum:0
    Maximum:102
    TYPE
    source type for measurement (Source: Rhea)
    ValueDefinition
    eearthquake
    bborehole
    QUAL
    quality of measurement (Source: Rhea)
    ValueDefinition
    a 
    b 
    c 
    da best, d worst
    MARK
    symbol used to plot measurement (Source: Rhea)
    ValueDefinition
    0 
    61 
    62 
    63 
    6463 for borehole; 61, 62, 64 for earthquake
    INDEX
    index number used in pamphlet's table (Source: Rhea)
    Range of values
    Minimum:1
    Maximum:17
    FOCMECH
    focal mechanism solution symbol number (Source: Rhea)
    ValueDefinition
    0 
    70 
    71 
    72 
    X-COORD
    longitude (Source: Rhea)
    Range of values
    Minimum:-88.948
    Maximum:-87.460
    Y-COORD
    latitude (Source: Rhea)
    Range of values
    Minimum:37.320
    Maximum:38.915

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Rhea, Susan
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
    Susan Rhea
    US Geological Survey
    Geophysicist
    MS966, Box 25046, Federal Center
    Denver, CO
    USA

    303-273-8639 (voice)
    303-273-8600 (FAX)
    rhea@usgs.gov
    Contact_Instructions: email is the best way to make contact

Why was the data set created?

The data was generated to help in understanding the seismotectonic hazards in the vicinity of the lower Wabash Valley. This data complements similar data collected in the vicinity of New Madrid, MO, see US Geological Survey Open-File Report 95-0574, available at http://pubs.usgs.gov/of/1995/0574/

How was the data set created?

  1. From what previous works were the data drawn?
    (source 1 of 4)
    Dart, Richard, 1985, Horizontal-stress directions in the Denver and Illinois basins from the orientations of borehole breakouts: U.S. Geological Survey Open-File Report OFR 85-733, U. S. Geological Survey, Denver, CO.

    Other_Citation_Details: 41 p
    Type_of_Source_Media: electronic and paper
    Source_Contribution: locations and orientations
    (source 2 of 4)
    Ellis, W.L., 1994, Summary and discussion of crustal stress data in the region of the New Madrid seismic zone, Chapter B of Shedlock, K.M., and Johnston, A.C., eds., Investigations of the New Madrid seismic zone: U.S. Geological Survey Professional Paper 1538-B, U. S. Geological Survey, Denver, CO.

    Other_Citation_Details: B1-B13
    Type_of_Source_Media: electronic and paper
    Source_Contribution: locations and orientations
    (source 3 of 4)
    Herrmann, R.B., 1979, Surface wave focal mechanisms for eastern North American earthquakes with tectonic implications: Journal of Geophysical Research v. 84, no. B7, American Geophysical Union.

    Other_Citation_Details: p. 3543-3552
    Type_of_Source_Media: electronic and paper
    Source_Contribution: locations and orientations
    (source 4 of 4)
    Wheeler, R.L. and Johnston, A.C., 1992, Geologic implications of earthquake source parameters in central and eastern North America: Seismological Research Letters v. 63, no. 4, Seismological Society of America, San Francisco, CA.

    Other_Citation_Details: p. 491-514
    Type_of_Source_Media: electronic and paper
    Source_Contribution: locations and orientations
  2. How were the data generated, processed, and modified?
    Date: 27-Jan-1998 (process 1 of 2)
    Lat-lon locations received electronically and converted to arcinfo coverages. point attributes added.
    Date: 06-May-1998 (process 2 of 2)
    Creation of original metadata record Person who carried out this activity:
    Susan Rhea
    US Geological Survey
    Geophysicist
    MS966, Box 25046, Federal Center
    Denver, CO
    USA

    303-273-8639 (voice)
    303-273-8600 (FAX)
    rhea@usgs.gov
    Contact_Instructions: email is the best way to make contact
  3. What similar or related data should the user be aware of?
    Rhea, Susan, and Wheeler, R.L., 1996, Map showing seismicity in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky: U.S. Geological Survey Miscellaneous Investigations Series Map I-2583-A, U.S. Geological Survey, Denver, CO.

    Other_Citation_Details: pamplet accompanies map

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

  1. How well have the observations been checked?
    The attribute accuracy is described, where present, with each attribute defined in the Entity and Attribute Section.
  2. How accurate are the geographic locations?
    well-bore locations determined from township and range description, earthquake locations taken from published sources cited by Rhea and Wheeler (1996)
  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?
    Point features present.

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)
    Susan Rhea
    US Geological Survey
    Geophysicist
    USGS Mail Stop 966
    Box 25046, Federal Center
    Denver, CO
    USA

    303-273-8639 (voice)
    303-273-8600 (FAX)
    rhea@usgs.gov
    Contact_Instructions: Email is the best way to make contact.
  2. What's the catalog number I need to order this data set? USGS Open-File Report 97-0681
  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 and stratigraphic nomenclature. Any use of trade names is for descriptive purposes only and does not imply endorsement by the USGS.
  4. How can I download or order the data?
  5. What hardware or software do I need in order to use the data set?
    ARC/INFO version 7.0.3 or later or ArcView 3.0 or later

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:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)
This page is <https://geo-nsdi.er.usgs.gov/metadata/open-file/97-681/stress.faq.html>
Generated by mp version 2.9.48 on Tue Jul 03 20:07:02 2018