Geology of the Barrilla Mountains, Texas
Reprinted from Geological Society of America Bulletin, v. 62, no. 4, 1951. The Barrilla Mountains, in the northeastern part of the Davis Mountains of Trans-Pecos Texas, are composed of Tertiary volcanic materials. Five tuffs and five lava flows, 1500 feet thick occurring throughout the mountains, persist in thickness and lithologic characteristics. Their upper surfaces show little erosion. The lavas are chiefly silicic and soda rich.
Eifler, G. K., Jr., 1951, Geology of the Barrilla Mountains, Texas: The University of Texas at Austin, Bureau of Economic Geology, Report of Investigations No. 8, 15 p.
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The University of Texas at Austin, Bureau of Economic Geology
Report of Investigation