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Geographic extent of the Herrin Coal in Indiana

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• 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?
  1. How well have the observations been checked?
  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?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How should this data set be cited?

   U.S. Geological Survey Central Region Energy Resources Team, 2002, Geographic extent of the Herrin Coal in Indiana: U.S. Geological Survey Professional Paper 1625-D, U.S. Geological Survey, Denver, Colorado.

   This is part of the following larger work.

   (ed.), J.R. Hatch , and (ed.), R.H. Affolter , 2002, Resource Assessment of the Springfield, Herrin, and Danville and Baker Coals in the Illinois Basin: U.S. Geological Survey Professional Paper 1625-D, U.S. Geological Survey, Denver, Colorado.

   This is part of the following larger work.

   U.S. Geological Survey, 2002, National Coal Resource Assessment: U.S. Geological Survey Professional Paper 1625, U.S. Geological Survey, Denver, Colorado.

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -88.0979

   East_Bounding_Coordinate: -87.0881

   North_Bounding_Coordinate: 39.9229

   South_Bounding_Coordinate: 37.7717

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: Jul-1999

   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):

      • GT-polygon composed of chains (111)

   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 .01. Longitudes are given to the nearest .01. Latitude and longitude values are specified in decimal degrees.

      The horizontal datum used is North American Datum 1927.
      The ellipsoid used is CLARKE1866.
      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?

   ibhecrp.dbf

   Shapefile Attribute Table

   Coal

   Yes coal present, no coal not present

   Character field

   Entity_and_Attribute_Overview:

   Areas defined as "no coal" or "Insufficient Data" are where the *position* of the coals is identifiable using the surrounding stratigraphy, but there is no coal preserved in the rock record. They are areas within the outcrop extent of the coal beds where we have data essentially demonstrating zero coal thickness. In addition, given that these regional datasets are a compilation of data generated by each of the three states (Kentucky, Illinois, Indiana) within the Illinois basin, some dIscrepencies between states may exist. For instance, "Channels" have been defined and are represented in Illinois and Kentucky but have been extracted out of the coal extent in Indiana.

   Entity_and_Attribute_Detail_Citation: None

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • U.S. Geological Survey Central Region Energy Resources Team

2. Who also contributed to the data set?

3. To whom should users address questions about the data?
   Indiana Geological Survey
   c/o Karen K Like
   Database Coordinator, GIS Analyst
   611 North Walnut Grove
   Bloomington, Indiana (IN) 47405-2208
   USA
   

   (812) 855-7636 (voice)
   (812) 855-2862 (FAX)
   igs@pyrite.igs.indiana.edu
   

   Hours_of_Service: 800-1200, 1300-1700 (eastern time), Mon-Fri

Why was the data set created?

The Nation's coal resources are being assessed by the United States Geological Survey. A fundamental component for this assessment work is to compile digital geologic and geographic data into a Geographic Information System (GIS). The GIS allows for the spatial integration of data layers, resulting in the ability to display, analyze, and query data to answer complex geo-spatial questions concerning coal resource occurrence.

How was the data set created?

1. From what previous works were the data drawn?

   ilhecrp (source 1 of 3)

   Illinois State Geological Survey, 1998, Herrin crop: United States Geological Survey, Reston, Virginia.

   Type_of_Source_Media: digital

   Source_Scale_Denominator: 500000

   Source_Contribution: Spatial and attribute information

   kyhecrp (source 2 of 3)

   Survey, Kentucky Geological , 199904, Herrin crop: United States Geological Survey, Reston, Virginia.

   Type_of_Source_Media: digital

   Source_Scale_Denominator: 500000

   Source_Contribution: Spatial and attribute information

   (source 3 of 3)

   Andrews, William, 2001, (unpublished work).

   Type_of_Source_Media: interpretive

   Source_Contribution:

   The Indiana portion of the Herrin coal outcrop was generated by creating an outcrop extent which was exactly halfway between the Springfield and Danville coal outcrops.

2. How were the data generated, processed, and modified?

   Date: Aug-1999 (process 1 of 1)

   The Indiana portion of the outcrop was generated by finding the mean distance between the Springfield and Danville outcrops by William Andrews. The state lines were then added to created the extent.

   Person who carried out this activity:
   

   Karen K Like
   Indiana Geological Survey
   Database Coordinator, GIS Analyst
   611 North Walnut Grove
   Bloomington, Indiana (IN) 47405-2208
   USA
   

   (812) 855-7636 (voice)
   (812) 855-2862 (FAX)
   klike@indiana.edu
   

   Hours_of_Service: 800-1700 (eastern time), Mon-Fri

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?

2. How accurate are the geographic locations?

   Limited to software coordinates precision to geographic coordinates.

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?

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, CO 80225
   USA
   

   1-888-ASK-USGS (voice)
   303-202-4693 (FAX)
   ask@usgs.gov
   

2. What's the catalog number I need to order this data set?

   USGS Professional Paper 1625-D

3. What legal disclaimers am I supposed to read?

   This Compact Disc-Read Only Memory (CD-ROM) publication was prepared by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor any of their employees, makes any warranty, expressed or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed in this report, or represents that its use would not infringe privately owned rights. Reference therein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof.
   Although all data and software published on this CD-ROM are used by the U.S. Geological Survey, no warranty, expressed or implied, is made by the U.S. Geological Survey as to the accuracy of the data and related materials and (or) the functioning of the software. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of these data, software, or related materials.

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	Geographic features and attribute data in format ArcView shapefile (version 1.0)
     Network links:	<http://energy.cr.usgs.gov/coal/nca/>

   • Cost to order the data: none

Who wrote the metadata?

Dates:

Last modified: Aug-1999
Last Reviewed: 28-Mar-2002

Metadata author:

Indiana Geological Survey
c/o Karen K Like
Database Coordinator, GIS Analyst
611 North Walnut Grove
Bloomington, Indiana (IN) 47405-2208
USA

(812) 855-7636 (voice)
(812) 855-2862 (FAX)
klike@indiana.edu

Hours_of_Service: 800-1700 (eastern time), Mon-Fri

Metadata standard:

Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)