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The AAPG/Datapages Combined Publications Database
GCAGS Transactions
Abstract
Salt Tectonics and Cretaceous Uplift, Westernmost Central Mississippi Salt Basin, Madison Parish, Louisiana
A.H.M. Shah Alam (1), Rex H. Pilger, Jr. (1)
ABSTRACT
Interpretation of seismic data from Madison Parish, Louisiana, indicates that salt tectonism has involved a three-fold evolution from pillow, through diapiric, to post-diapiric stages. As a consequence, sedimentation patterns were most influenced by salt tectonics during the first two stages. The last, post-diapiric, movement may have involved some normal faulting and intra-stratal slip.
A distinct unconformity in Upper Cretaceous units provides clear evidence of initial activity of the Monroe Uplift, with continued relatively positive behavior into the early Tertiary. There is no obvious evidence for the Uplift as a tectonic feature in rocks older than Late Cretaceous.
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