Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Surface faults in Paducah

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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: Surface faults in Paducah
Abstract:
This data is from the geologic map of the Paducah 1°x2° Sheet, digitized by the Illinois State Geological Survey, John Nelson directing. We obtained the digitized, exported coverage of faults and geology from Barb Stiff (stiff@geoserv.isgs.uiuc.edu) 1995.09.05
Our intent is to show the overall fault pattern, and to show the locations of the main exposed and near-surface faults for comparison to deep subsurface structures. We made little attempt to edit details of the digitized faults, beyond adding tick marks to indicate dip directions of a few normal faults. For details such as exact locations, fault dips, separations, and cross- cutting relations, users should consult the original geologic maps.
  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: Surface faults in Paducah: 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: -90
    East_Bounding_Coordinate: -87.99872589
    North_Bounding_Coordinate: 38.00006485
    South_Bounding_Coordinate: 37
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Beginning_Date: 1995
    Ending_Date: 1995
    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 (0)
      • String (3149)
      • 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. 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?
    PADFLT.AAT
    arc attributes for symbol code and fault exposure designation (Source: Nelson (see Reference))
    LINECODE
    symbol code used in map generation (Source: Rhea)
    ValueDefinition
    0 
    1 
    2 
    3 
    16 
    17 
    19 
    22 
    LNCODE
    symbol code used in map generation (Source: Rhea)
    ValueDefinition
    0 
    4 
    5 
    6 
    SYMCODE
    symbol code used in map generation (Source: Rhea)
    ValueDefinition
    0 
    30exposed
    130other
    FLTEXP
    fault exposure class (Source: Nelson)
    ValueDefinition
    (blank) 
    EXPOSED 
    CONCEALED 
    INFERRED 

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?
    Nelson
  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 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 3)
    Stiff, Barbara, 1995, written communication.

    Source_Scale_Denominator: 250000
    Source_Contribution: digital data
    (source 2 of 3)
    Nelson, W.J., 1995, Bedrock geology of the Paducah 1 degree x 2 degree quadrangle, Illinois, Kentucky, and Missouri: Illinois State Geological Survey Bulletin 102, Illinois State Geological Survey.

    Other_Citation_Details: 40 p., 5 folded plates, various scales
    Source_Scale_Denominator: 250000
    Source_Contribution: digital data
    (source 3 of 3)
    Nelson, John, in prep 1996, Bedrock geology of the Paducah 1x2 CUSMAP quadrangle, IL, IN, KY, and MO: U.S. Geological Survey Bulletin 2150B, U.S. Geological Survey.

    Other_Citation_Details: Nelson phone 217-244-2428
    Source_Scale_Denominator: 250000
    Source_Contribution: digital data
  2. How were the data generated, processed, and modified?
    Date: 30-Jul-1997 (process 1 of 2)
    The original arc/info coverage was in UTM projection and sent via ftp. The cover was projected to the study projection and simplified to contain only the exposed and near-surface faults. Plotting symbol code was 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?
    Wheeler, R.L., Rhea, Susan, and Diehl, S.F., Drahovzal, J.A., Bear, G.W., and Sargent, M.L., 1997, Seismotectonic map showing faults, igneous rocks, and geophysical and neotectonic features in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky: U.S. Geological Survey Miscellaneous Investigations Series Map I-2583-D, 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 scale of original data varies 1:24,000 to 1:250,000 depending on various maps that were used in the compilation by Illinois Basin Consortium personnel.
  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 data sent included
  5. How consistent are the relationships among the observations, including topology?
    This cover had the most reliable locations and quality of the three fault covers used to portray faults in the lower Wabash Valley. Where this cover overlapped data from Illinois Basin Consortium compilation (ibcflt) or Geologic Map of Kentucky (kyflt), this data was used to erase those covers.

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/padflt.faq.html>
Generated by mp version 2.9.48 on Tue Jul 03 20:07:01 2018