--> A Palinspastic Restoration for the Evolution of the Green Knoll Salt Dome in the Gulf of Mexico
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A Palinspastic Restoration for the Evolution of the Green Knoll Previous HitSaltNext Hit Previous HitDomeNext Hit in the Gulf of Mexico

Randy Broussard1 and Abu K. M. Sarwar1

1Department of Earth and Environmental Sciences, University of New Orleans, New Orleans, LA.

October 7, 2014 Tuesday 3:45 P.M. GCAGS, Lafayette, Louisiana

Abstract

The western portion of the Mississippi/Atwater foldbelt in the Gulf of Mexico contains what is known as the Green Knoll Previous HitSaltNext Hit Previous HitDomeNext Hit. A 2D palinspastic structural restoration was performed on the flanks of the Green Knoll Previous HitSaltNext Hit Previous HitDomeNext Hit using Midland Valley's Move software. The creation and growth of this Previous HitsaltNext Hit diapir is punctuated by Previous HitsaltNext Hit deposition, Previous HitsaltNext Hit migration, sediment loading, and is linked to the “Frampton” foldbelt. An earlier study performed a palinspastic restoration on the Frampton foldbelt, and revealed a non-depositional unconformity at the Pliocene-Miocene chronostratigraphic boundary, where increased sedimentation rates caused Previous HitsaltNext Hit growth to outpace deposition. The restoration performed on the Green Knoll Previous HitSaltNext Hit Previous HitDomeNext Hit reveals a major change in the structural fabric around the Pliocene-Miocene time intervals. The Previous HitsaltTop plumed upward through a weak point in the sediment, while the counter-regional reverse-fault–dominated foldbelt structure (exhibited in the Frampton foldbelt) is starting to appear.

AAPG Datapages/Search and Discovery Article #90196 © 2014 GCAGS, Lafayette, Louisiana, October 5-7, 2014