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The AAPG/Datapages Combined Publications Database
GCAGS Transactions
Abstract
Basement Faults and Smackover Structure
Phillip T. Fowler (1)
ABSTRACT
A post-Buckner (Upper Jurassic) zone of structural discordance that extends probably throughout the Gulf coastal plain separates stratal sequences of different tectonic style. The younger sequence was deformed by superficial gravity tectonics with horizontal extension on normal faults. The older sequence was deformed during deposition of the Smackover-Buckner unit by horizontal compression which caused strike-slip movement on pre-existing vertical faults originating in the crust. Productive Smackover anticlines are part of a multi-order wrench-fault system. The basement faults moved vertically before and after the episode of strike-slip movement.
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