Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Paleoliquefaction surveys between 1990 and 1994 in Indiana

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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: Paleoliquefaction surveys between 1990 and 1994 in Indiana
Abstract:
The northern part of the map area and large adjacent regions have been severely shaken by one or more moderate to large prehistoric earthquakes. The evidence of these takes the form of paleoliquefaction features, including shaking-induced sandblows and dikes that fed them.
Over several summer field seasons between 1990 and 1994, Cheryl and Pat Munson, along with several of their students, searched ditches and river banks for evidence of liquefaction. They found numerous banks with shaking-induced sandblows and the dikes that fed them. This database includes the location of dikes that the Munsons and those with them observed and measured. Dike thickness was divided into 5 classes, 1 being the smallest at 0-4 cm, 2 = 5-14 cm, 3 = 15-29 cm, 4 = 30-59 cm, and 5 = over 60 cm.
The most widespread paleoliquefaction is attributed to a mid-Holocene earthquake near what is now Vicennes, IN, with an estimated moment- magnitude of about 7.5. Stratigraphic, geomorphological, pedological, archealogical, and geochronologic evidence indicates that perobably some of the paleoliquefaction was caused by several additional, smaller earthquakes during the Holocene and late Pleistocene.
(excerpted from map I-2583-A)
  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: Paleoliquefaction surveys between 1990 and 1994 in Indiana: U.S. Geological Survey Open-File Report 97-0681, U.S. Geological Survey, Denver.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -91
    East_Bounding_Coordinate: -86.99533844
    North_Bounding_Coordinate: 42
    South_Bounding_Coordinate: 37
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 1990
    Ending_Date: 1994
    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 Point data set. It contains the following vector data types (SDTS terminology):
      • Point (9)
      • String (40)
      • GT-polygon composed of chains (10)
    2. What coordinate system is used to represent geographic features?
      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest .001. Longitudes are given to the nearest .001. 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?
    LIQMUNSURV.PAT
    polygons around rivers searched for evidence of liquefaction (Source: Rhea)
    INSIDE
    arcinfo item created in buffer command, 1 for inside the polygon (Source: arcinfo)
    ValueDefinition
    0 
    1inside the polygon
    100 

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?
    Rhea
  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 US Geological SurveyOpen-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 3)
    Munson, Cheryl, 1995, written communication.

    (source 2 of 3)
    Munson, P.J., Munson., C.A., Bleuer, N.K., and Labitzke, M.D., 1992, Distribution and dating of prehistoric earthquake liquefaction in the Wabash Valley of the central U.S.: Seismological Research Letters vol 63, no 3, Seismological Society of America.

    Other_Citation_Details: p. 337-342
    (source 3 of 3)
    Munson, P.J., Munson, C.A., and Pond, E.C., 1995, Paleoliquefaction evidence for a strong Holocene earthquake in southcentral Indiana: Geology vol 23, Geologic Society of America.

    Other_Citation_Details: pg 325-328
    Type_of_Source_Media: map
    Source_Scale_Denominator: 250000
    Source_Contribution: river reaches outlined on map
  2. How were the data generated, processed, and modified?
    Date: 21-Feb-1995 (process 1 of 2)
    1:100,000 scale map received by surface mail. Map contained highlighted areas where searches had been made. Hydrology DLG coverage brought up on screen and compared to hard copy. Highlighted areas on map were identified on DLG coverage, and stream segments were SELected and PUT to new coverage. In new coverage, arcs were BUFFERed to create areas out of line segments so that reaches could be color shaded on final map.
    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.

    Other_Citation_Details: pamphlet 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?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    all locations received are included
  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/liqmunsurv.faq.html>
Generated by mp version 2.9.48 on Tue Jul 03 20:06:59 2018