Ancestral Basin Architecture: A Possible Key to the Jurassic Haynesville Trend
Published:December 01, 2009
Bruce J. Martin, Thomas E. Ewing, 2009. "Ancestral Basin Architecture: A Possible Key to the Jurassic Haynesville Trend", Unconventional Energy Resources: Making the Unconventional Conventional, Tim Carr, Tony D’Agostino, William Ambrose, Jack Pashin, Norman C. Rosen
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Ancestral Gulf Coast Basin architecture controls much of the Jurassic Haynesville shale mudstone trend. Basement blocks developed during Early and Middle Jurassic rifting and overlain by a variable thickness of Louann Salt ultimately formed the foundation of large Haynesville (Gilmer) carbonate platforms that provide boundaries to the Haynesville organic shale trend. Salt movement influenced by basement features created local fairways of salt deflation, which received thicker Haynesville organic shale sequence and experienced less subsequent disruption. Available data sets indicate that salt movement in the Sabine uplift area terminated during the Late Jurassic. Therefore, post-Jurassic faulting was minimized, preventing hydrocarbon loss from the Haynesville organic shale reservoirs.