Oligocene, Gulf Coast, Gulf of Mexico

Comments on Geologic Parameters

5 Percent Shale:

Percent shale was also digitized from percent-sandstone maps of the upper, middle, and lower as defined by Galloway and others (1982), which provides an index to the heterogeneity of the system.

5 Map:


5 Reference:

Galloway, W. H., Hobday, D. K., and Magara, Kinji, 1982, Frio Formation of the Texas Gulf Coast Basin—depositional systems, structural framework, hydrocarbon origin, migration, distribution, and exploration potential: The University of Texas at Austin, Bureau of Economic Geology Report of Investigations No. 122, 78 p.