ABSTRACT
The Brenham salt dome, located in the center of the Texas Gulf Coastal Plain, and discovered prior to 1915 by the drilling of a shallow water well, is a typical piercement dome, shown by the 2,950-foot uplift of the Crockett formation. The maximum thickness of cap rock is 722 feet. The thinnest section encountered is on the east side of the dome, where an 89-foot section of cap rock was drilled before the salt was encountered. The greatest amount of uplift occurs at this point and the thin cap suggests that a section of several hundred feet was eroded before deposition of the Crockett. Wells drilled on and around this structure have been discouraging as to possible super-cap, cap-rock, and flank production.
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