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- W3000021233 abstract "The offshore portion of the drift section of the Espirito Santo basin is known for its stratigraphic and structural complexity related to the post-breakup salt tectonics. The movement of the salt deformed the sedimentary record of the drifte phase in the Domos de Sal Province, southern region of the basin, area of study of this work. In this research, structural domains related to salt tectonics were delineated according to the patterns and character of the structures present in the study area. The analyzes were performed using seismic data from 39 2D seismic sections and geophysical and geological data from wells drilled by the oil and gas industry. The stratigraphic-structural styles identified were: nucleated faults nucleated from the zones of detachment, carbonate rafts of albian age, turtle hull structures, domes, diapers, tongues and salt sheets. From the interpretation of structures related to salt tectonics, it was possible to delimit four structural domains. The first domain, present in the proximal region, is marked by the absence or small thickness of salt, structured with lithic faults and well defined zone of detachment; the second domain, in the intermediate portion, presents the association of small saline domes with the turbulent hull-like albian sedimentary section; the third domain displays well- -developed salt walls and walls; while the fourth domain, located in the most distal portion of the study area, presents the diameters with a subtle vergence to the east and salt tongues. With the seismic interpretation of the top of the salt, a structural contour map was generated in seismic time (TWT) that aided the delimitation of these four structural domains, as well as the observation of the alignment of the salt structures, with direction NNW-SSE. From the analysis of the structures present in the first three domains, it is suggested that they are under a distensive tectonic regime, whereas in the fourth domain it is inferred that they are resulting from compressive local conditions. The development of local tectonic regimes related to saline tectonics, which evolve from distensive to compressive in the WE direction, downdip, is explained by the salt displacement to the east caused by the slope geomorphological slope in the Espirito Santo basin and by the overload of subsequent on the platform from the Paleogene." @default.
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- W3000021233 date "2019-12-12" @default.
- W3000021233 modified "2023-09-27" @default.
- W3000021233 title "Structural Domains Related to Salt Tectonics in the Southern Region of Espírito Santo Basin" @default.
- W3000021233 doi "https://doi.org/10.11137/2019_4_359_374" @default.
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