About: Brown Dense
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The Brown Dense limestone is an informal name used by petroleum geologists for a layer of rock that lies beneath large parts of southern Arkansas and northwest Louisiana. The Brown Dense is a 300- to 500-foot thick interval within organic-rich, fine-grained carbonate rock that comprise the Lower Member of the Smackover Formation. Within this area, the Lower Smackover Member lies at depths of 8,000 to 10,000 feet beneath the land surface.
