When Salt Meets Lava: Interplay between salt tectonics and large igneous province in the Espirito Santo Basin

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Meeting ID: 932 0137 7630
Passcode: 013011

Presenter

Naim A. Celini, Ph.D.
Research Assistant Professor
Applied Geodynamics Laboratory
Bureau of Economic Geology
Jackson School of Geosciences
The University of Texas at Austin

Description

The interplay between volcanics and salt structures has been observed at various scales but never at the crustal scale along an entire passive margin. This talk will discuss how the emplacement of a large igneous province (LIP) impacted the development of a gravity-driven salt system in the Espirito Santo Basin using seismic data. The data show that where the LIP is absent, a classical gravity‐driven salt system emplaced with updip extension, mid-slope translation and downdip shortening. When approaching the LIP, the emplacement of the volcanics caused salt expulsion under the load of the volcanic complex resulting in contractional features with a landward vergence. It completely overprinted the former translational domain and further south from the LIP, salt.