Paleogene coal deposits of the Wilcox group and the Indio formation of south Texas

AAPG Studies in Geology -11
By: , and 
Edited by: Peter D. WarwickAlexander K. KarlsenMatthew D. Merrill, and Brett J. Valentine



Coal deposits of the undivided Wilcox Group and its southern equivalent Indio Formation (Paleogene) of south Texas are among the coal resources that are not evaluated quantitatively in the current Gulf Coastal Plain coal re-source assessment. South Texas Wilcox and Indio coals have not been extensively mined, nor have they been mined commercially for at least the past 60 years. These coals constitute only about 1 percent of the demonstrated coal resources within the Texas Gulf Coastal Province. In contrast to the Wilcox coal resources of the assessed areas of the Sabine uplift of Texas and Louisiana, and of northeast Texas and central Texas (see Warwick et al., 2011a, b, c), Wilcox and Indio coal beds of south Texas are few in number, each generally less than 5 ft thick, and highly discontinuous. Furthermore, analytical data indicate that the sulfur content and ash yields of south Texas Wilcox and Indio coals generally exceed those of other Texas coals. Although these and other factors preclude the likely development of Wilcox or Indio coal resources in the near future, the comparatively elevated rank of these deposits has attracted recent interests related to coalbed methane production (SanFilipo, 1999; Warwick et al., 2002a, 2007b).

Study Area

Publication type Book chapter
Publication Subtype Book Chapter
Title Paleogene coal deposits of the Wilcox group and the Indio formation of south Texas
Series title AAPG Studies in Geology
Chapter 11
Volume 62
Year Published 2011
Language English
Publisher American Association of Petroleum Geologists
Contributing office(s) Eastern Energy Resources Science Center
Description 9 p.
Larger Work Type Book
Larger Work Subtype Monograph
Larger Work Title Geologic assessment of coal in the Gulf of Mexico coastal plain
First page 260
Last page 268
Country United States
State Texas
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