coal_strat_minor

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Illinois State Geological Survey

Publication_Date: 20170818

Title: coal_strat_minor

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: ISGS Coal Section Stratigraphic Database

Issue_Identification: coalstrat_minor, coal_strat_minor

Publication_Information:

Publication_Place: Champaign, Illinois

Publisher: Illinois State Geologic Survey

Edition: 20170818

Description:

Abstract:

Data files of non-confidential stratigraphic information for the Jamestown, Colchester, Seelyville, Dekoven, Lower Dekoven, and Davis Coals from over 11,000 drill hole and outcrop descriptions of Pennsylvanian stratigraphy. Coordinates have been calculated for each point location.
COALSTRAT_MINOR.TXT (ASCII text, comma-delimited) and COALSTRAT_MINOR.XLSX (Excel) are data files that contain one record per data point. Data provided are ID, coordinates, well type, log type, surface elevation, and elevation and thickness of the three coals.
IL_COAL_STRAT_MINOR_PT.SHP and related files are the GIS shapefile created from the data text file. The native spatial reference of the data is unprojected Geographic Decimal Degree, NAD83. See the shapefile's ".prj" file for more information.
This file is a subset of the ISGS Coal Section's Stratigraphic Database, an archive of stratigraphic data compiled by ISGS staff for various projects (primarily related to coal resources, structure, and mining geology) dating back to 1938.

Purpose:

These data were compiled for the National Coal Resources Data System (NCRDS) and the National Coal Assessment of the U.S. Geological Survey (USGS). The complete database is available from the USGS. This file presents the thickness and elevation data on three of the most important coal seams in Illinois. The data are useful for creating structure or isopachs of the coal seams to aid in exploration for coal, coalbed methane, or oil and gas.

Supplemental_Information:

This file contains all corrections and additions made to the database as of 20170818.

Time_Period_of_Content:

Time_Period_Information:

Single_Date/Time:

Calendar_Date: 20170818

Currentness_Reference: publication date

Status:

Progress: Complete

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -91.085170

East_Bounding_Coordinate: -87.488254

North_Bounding_Coordinate: 41.494288

South_Bounding_Coordinate: 37.607430

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: geology

Theme_Keyword: coal

Theme_Keyword: mineral

Theme_Keyword: resources

Theme_Keyword: stratigraphy

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: Illinois

Access_Constraints:

ISGS information must be obtained directly from the ISGS or from an authorized distributor. Be aware that ISGS information obtained from an unauthorized third party may have been altered subsequent to original distribution, or may no longer be current. Any access to these data, Web sites, computer systems, electronic services, and electronic networks is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice. Links to these are provided in the Cross References section.

Use_Constraints:

ISGS information is the property of and copyrighted by the Board of Trustees of the University of Illinois with all rights reserved. University copyright policy is stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4. A link is provided in the Cross References section. Individuals or entities may make fair use of copyrighted ISGS material, such as reproducing a single figure or table, or using a brief text quotation, without obtaining formal permission, but in all cases the Illinois State Geological Survey must be credited as the source of the material. To reproduce ISGS information beyond the fair use standard, permission must be obtained from the ISGS Information Office, 615 East Peabody Drive, Champaign, Illinois 61820, 217-333-4747, isgs@isgs.illinois.edu. License fees and a license agreement may be required, depending on the proposed usage. Any use of these data is governed by University and campus policies, in particular, but not limited to, the Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign, the ISGS Terms of Use document available at the ISGS Web site, and the University of Illinois Web Privacy Notice. Links to these are provided in the Cross References section. Map information is to be used at a scientifically and cartographically appropriate scale, that is, at a scale no greater than indicated on the map or as described in the documentation of the map or map data. Map information is not appropriate for, and is not to be used as, a geodetic, legal, or engineering base. Map information has no legal basis in the definition of boundaries or property lines and is not intended as a substitute for surveyed locations such as can be determined by a registered Public Land Surveyor. The data do not replace the need for detailed site-specific studies.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Christopher P. Korose

Contact_Organization: Illinois State Geological Survey

Contact_Address:

Address_Type: mailing address

Address: 615 East Peabody Drive

City: Champaign

State_or_Province: Illinois

Postal_Code: 61820

Country: USA

Contact_Voice_Telephone: 217-244-2414

Contact_Electronic_Mail_Address: korose@illinois.edu

Hours_of_Service: 8:00 a.m. - 5:00 p.m., Monday-Friday

Contact_Instructions:

Contact this individual ONLY for specific information about the use of this data set. For general questions about distribution, or availability of other data, please contact the Information Office as listed under the Distribution_Information section.

Data_Set_Credit:

 Database Administrators: Christopher Korose, Andrew Louchios, and Scott Elrick
 Data entry: ISGS Coal Section staff
 Documentation: Colin Treworgy, Daniel Nelson, Christopher Korose, and Andrew Louchios
 Quality Control: ISGS Staff

Native_Data_Set_Environment:

Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.2.2.1350

Cross_Reference:

Citation_Information:

Title: ISGS Terms of Use

Online_Linkage: <http://www.isgs.illinois.edu>

Cross_Reference:

Citation_Information:

Title: University of Illinois Web Privacy Notice

Online_Linkage: <http://www.vpaa.uillinois.edu/policies/web_privacy.cfm>

Cross_Reference:

Citation_Information:

Title:

University Copyright Policy (stated in the General Rules Concerning University Organization and Procedure, Article III, Section 4)

Online_Linkage: <http://www.uillinois.edu/trustees/rules.cfm#sec34>

Cross_Reference:

Citation_Information:

Title:

Policy on Appropriate Use of Computers and Network Systems at the University of Illinois at Urbana-Champaign

Online_Linkage: <http://www.fs.uiuc.edu/cam/CAM/viii/viii-1.1.html>

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Accuracy of attribute information is variable, depending on the source materials and the geologist. Some logs are precise measurements of thickness and depth, others may have errors or be rounded. Geologic correlations are, of course, open to other interpretations. In general: measurements from core descriptions and coal test geophysical logs are accurate to within fractions of an inch; measurements from drillers logs may be accurate to within an inch to 5 feet, depending on the equipment used and the experience of the on-site geologist; measurements from oil test geophysical logs are accurate to within +/- one foot.
Formal evaluation tests have not been run, but daily hands-on experience using the data for real-life applications has proven the quality of the database. Experience suggests that less than 1% of the data contain errors that involve gross mis-location of points or mis-correlation of coals.

Logical_Consistency_Report: see Process Step entries.

Completeness_Report:

The database was compiled by ISGS staff for various projects (primarily related to coal resources, structure, and mining geology) dating back to 1938. This subset was compiled for and is available from the USGS's National Coal Resources Data System. No attempt has been made to compile all available data. This file does not represent all the well records on file at the ISGS, nor should the absence of data for one or more coals for a specific data point be interpreted to mean that those coals are not present.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Concerning the accuracy of horizontal coordinate measurements, there is considerable variability depending on the source material. Some holes have surveyed locations and are accurate to within a foot, others have only description to the nearest forty acres. Overall, the database administrator estimates that most points are within 500 feet of their correct locations, but no scientific tests have been done to verify this.

Lineage:

Process_Step:

Process_Description:

Initially, data are entered into a set of temporary holding files. A series of programs is then run to convert certain fileds to numeric codes and to calculate values for other fields. Legal location descriptions are converted to coordinates and a program then determines in which quadrangle each point is located. Another program checks the database to see if other descriptions of that point have been previously entered. If other descriptions are located, a version number is assigned to the new description.

Process_Date: varies

Process_Step:

Process_Description:

Following data entry and conversion to codes, a number of programs are run to catch errors before before final loading of new data into the database. These programs catch most errors made in compiling or encoding stratigraphic data.

Process_Date: varies

Process_Step:

Process_Description:

The Coal Stratigraphic Data were extracted from the main stratigraphic data base. The criteria for extraction individual points were that one or more of the three coals had been correlated at a point, the precise location of the point was known, and that the data were not proprietary.

Process_Date: 199810

Process_Step:

Process_Description: Some corrections were made to the data.

Process_Date: 19981001

Process_Step:

Process_Description:

Numerous corrections were made to the main database during the development of new Access-based queries for the extraction of stratigraphic data stored in Oracle.

Process_Date: 20071101

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Entity point

Point_and_Vector_Object_Count: 10815

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0.000000

Longitude_Resolution: 0.000000

Geographic_Coordinate_Units: Decimal degrees

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Horizontal_Coordinate_System_Definition:

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: Geodetic Reference System 80

Semi-major_Axis: 6378137.000000

Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

The data are in fixed fields with each field separated by a comma. Blanks in a field indicate no value.

 DATAFILE NAME: COALSTRAT_MAJOR.TXT
 A file consisting of one record for each data point.

   IDS               ISGS identification number
   COUNTY_NAME       Illinois County name
   LONGITUDE         Longitude x-coordinate in decimal degrees, NAD83
   LATITUDE          Latitude y-coordinate in decimal degrees, NAD83
   SURFELV           Surface elevation (ft)
   WELL_TYPE         Well type
   LOG_TYPE          Log type
   TOP_JTOWN         Elevation of top: Jamestown Coal (ft)
   THICK_JTOWN       Thickness of Jamestown (ft)
   TOP_COLCH         Elevation of top: Colchester Coal (ft)
   THICK_COLCH       Thickness of Colchester (ft)
   TOP_SEELY         Elev. of top: Seelyville Coal (ft)
   THICK_SEELY       Thickness of Seelyville (ft)
   TOP_DEKOVEN       Elev. of top: Dekoven Coal (ft)
   THICK_DEKOVEN     Thickness of Dekoven (ft)
   TOP_LWRDEK        Elev. of top: Lower Dekoven Coal (ft)
   THICK_LWRDEK      Thickness of Lower Dekoven (ft)
   TOP_DAVIS         Elev. of top: Davis Coal (ft)
   THICK_DAVIS       Thickness of Davis (ft)

Entity_and_Attribute_Detail_Citation: none

Detailed_Description:

Entity_Type:

Entity_Type_Label: coal_strat_minor

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: IDS

Attribute:

Attribute_Label: COUNTY_NAM

Attribute:

Attribute_Label: LONGITUDE

Attribute:

Attribute_Label: LATITUDE

Attribute:

Attribute_Label: SURFELV

Attribute:

Attribute_Label: WELL_TYPE

Attribute:

Attribute_Label: LOG_TYPE

Attribute:

Attribute_Label: TOP_JTOWN

Attribute:

Attribute_Label: THICK_JTOW

Attribute:

Attribute_Label: TOP_COLCH

Attribute:

Attribute_Label: THICK_COLC

Attribute:

Attribute_Label: TOP_SEELY

Attribute:

Attribute_Label: THICK_SEEL

Attribute:

Attribute_Label: TOP_DEKOVE

Attribute:

Attribute_Label: THICK_DEKO

Attribute:

Attribute_Label: TOP_LWRDEK

Attribute:

Attribute_Label: THICK_LWRD

Attribute:

Attribute_Label: TOP_DAVIS

Attribute:

Attribute_Label: THICK_DAVI

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Coal Section - Illinois State Geological Survey

Contact_Position: Coal Section Stratigraphic Database Administrator

Contact_Address:

Address_Type: mailing address

Address: 615 East Peabody Drive

City: Champaign

State_or_Province: Illinois

Postal_Code: 61820

Country: USA

Contact_Voice_Telephone: 217-244-2414

Contact_Facsimile_Telephone: 217-333-2830

Contact_Electronic_Mail_Address: alouchio@illinois.edu

Hours_of_Service: 8:00 a.m. - 5:00 p.m., Monday-Friday

Resource_Description:

ASCII text, Microsoft Excel, or GIS shapefile formats are currently available free of charge at the Illinois State Geological Survey's Illinos Coal Resource GIS Shapefiles and Coal Stratigraphic Data web page. Refer to the ISGS web page at <http://www.isgs.illinois.edu/index.shtml> for access to downloadable data and metadata.

Distribution_Liability:

Refer to the Legal Notices of Terms and Conditions of the University of Illinois Web Privacy Policy (there is a link in the Cross References section) for policy statements regarding the following: Disclaimer of Liability Disclaimer of Warranties and Accuracy of Data Disclaimer of Endorsement Disclaimer for External Links Disclaimer of Duty to Continue Provision of Data Security Choice of Law By obtaining these data you agree to the provisions of the University of Illinois Web Privacy Policy, regardless of the manner in which the information was obtained.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 1.317

Metadata_Reference_Information:

Metadata_Date: 20111129

Metadata_Review_Date: 20170818

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Christopher P. Korose

Contact_Organization: Illinois State Geological Survey

Contact_Address:

Address_Type: mailing address

Address: 615 East Peabody Drive

City: Champaign

State_or_Province: Illinois

Postal_Code: 61820

Country: USA

Contact_Voice_Telephone: 217-244-2414

Contact_Facsimile_Telephone: 217-333-2830

Contact_Electronic_Mail_Address: korose@illinois.edu

Hours_of_Service: 8:00 a.m. - 5:00 p.m., Monday-Friday

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Access_Constraints: This metadata document is intended for public distribution

Metadata_Use_Constraints: none

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile