Wilcox Group Apparent Thickness, Gulf Coast (wlcxthkg)

Metadata Updated: November 12, 2020

The Apparent Wilcox Group thickness maps are contoured from location and top information derived from the Petroleum Information (PI) Wells database. The Wilcox apparent thickness map was constructed by searching for Wilcox and Midway Group tops. Apparent thickness is computed by subtracting Midway top from the Wilcox top. Geographic control is superimposed on the maps from USGS state line, county, elevation and other data files. The veracity of the PI Wells database is being checked by comparison to published cross sections and geologic maps. Interpretation of the depth to Wilcox and apparent thickness maps along with published measured sections and cross sections indicates that portions of Texas, Louisiana, Mississippi and Alabama contain broad areas where a 20 to 40 foot net thickness of lignite and coal occur at shallow depths. The thicker coal zones are attributed to growth faulting or rift zones influencing peat deposition. The depth to Wilcox map shows several areas where dome-like uplifts and bench-like coal-bearing rock are buried to depths less than 5,000 ft.

Access & Use Information

License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Date March 29, 2004
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 2000 (publication)
Frequency Of Update notPlanned

Metadata Source

Harvested from DOI Open Data

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Additional Metadata

Resource Type Dataset
Metadata Date March 29, 2004
Metadata Created Date November 12, 2020
Metadata Updated Date November 12, 2020
Reference Date(s) January 1, 2000 (publication)
Responsible Party U.S. Geological Survey, Central Energy Resources Team (Point of Contact)
Contact Email
Access Constraints Use Constraints: This data set is preliminary. The Wilcox thickness was created using the formation tops of the Wilcox and the Midway Groups found in the IHS Energy, PI/Dwights PLUS Data with the addition of surface geology from USGS maps and field data. The PI Wells database was not checked by comparison to published cross sections and geologic maps., Access Constraints: none
Bbox East Long -83.199485
Bbox North Lat 37.182774
Bbox South Lat 25.657988
Bbox West Long -100.222252
Coupled Resource
Frequency Of Update notPlanned
Graphic Preview File https://certmapper.cr.usgs.gov/data/gulf/gulflib/graphic/wlcxthkpg.jpg
Graphic Preview Type JPEG
Licence This 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 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.
Metadata Language
Metadata Type geospatial
Progress completed
Spatial Data Service Type
Spatial Reference System
Spatial Harvester True

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