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Abstract

Summary

Jequitinhonha basin, one of the marginal sedimentary basins of Northeastern Brazil, presents a complex tectonic framework and petroleum system among marginal basins. Both seismic and structural interpretations were used to carry out an integrated study of the basin. Seismic attributes highlighted significant geological features as salt domes and volcanic rocks cross cutting the main geological formations. Seismic lines marked the surfaces of the Paleocene, Upper Cretaceous, Albian, Top Salt and Base Salt, and top of the volcanics, thus contributing to the knowledge of the tectonostratigraphic evolution of the basin. Three main basement controls were identified using potential field gravimetric and magnetic data. 2-D integrated model was created constraining the basin features using seismic interpretation for a seismic line in the dip direction and potential field data. The model inferred a granulitic lower crust, and horst and grabens at the top of the basement. Moho is ∽ 30 km deep beneath the continent and upwelling up to 16 km beneath the ocean. COB was also marked through integrated 2D modeling by the presence of rocks with oceanic and continental affinities.

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/content/papers/10.3997/2214-4609.201901317
2019-06-03
2024-04-23

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http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201901317
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2D Integrated Modeling of Jequitinhonha Basin, Brazilian Eastern Margin: Mapping Volcanics, Crustal Domains, and Tectonostratigraphic Framework
Conference Proceedings 2019, 1 (2019); https://doi.org/10.3997/2214-4609.201901317
/content/papers/10.3997/2214-4609.201901317
/content/papers/10.3997/2214-4609.201901317
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