Banca de DEFESA: LETÍCIA HUDSON BRITO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LETÍCIA HUDSON BRITO
DATE: 10/12/2020
TIME: 09:00
LOCAL: Videoconferencia - https://cutt.ly/6fcqwHK
TITLE:

Stratigraphic analysis of the offshore Rift and Post-Rift sections of Potiguar Basin, Brazilian
Equatorial Margin

KEY WORDS:

Brazilian Equatorial Margin; Potiguar Basin; Rift Basin; Tectonic System Tracts

PAGES: 75
BIG AREA: Ciências Exatas e da Terra
AREA: Geociências
SUMMARY:

The Potiguar Basin comprises one of the basins of the Cretaceous Continental Rifts system, an important event that occurred in the implantation of the Brazilian equatorial margin in northeastern Brazil, evincing a noteworthy region of hydrocarbon accumulations. In order to better understand the tectonic-stratigraphic evolution of the Potiguar Basin, this work aims to contribute to the study of the sedimentary record of the basin's rift and post-rift sections through the stratigraphic analysis of wells and seismic data. The study area is settled by this post-stack seismic volume known as Pescada Field, comprising the wells and seismic lines scrutinized. The first phase of interpretation, the 1D analysis of six exploratory wells, made it possible to characterize the main lithofacies and depositional systems of Pendência, Pescada and Alagamar formations, and also to recognize the main units of sequence stratigraphy, such as cycles, key surfaces and systems tracts, with the definition of three depositional sequences on a regional scale. The 2D interpretation displays a structural arrangement consisting of grabens/semi-grabens, internal highs, and an important fault system of NW-SE to E-W trends that affect the layers and gave rise to additional structures of rift context. Furthermore, the stratigraphic framework enabled the identification of the main boundary surfaces, seismic facies and seven tectonic system tracts that comprise the rift and post-rift sections and reflect the progress of active tectonism, from the initial rifting and two stages of high/low tectonic activity in the basin installation. The integration of all results reveals the effective application of sequence stratigraphy in the study area.

BANKING MEMBERS:
Presidente - 1149363 - VALERIA CENTURION CORDOBA
Externo ao Programa - 2490483 - ALEX FRANCISCO ANTUNES
Externa à Instituição - RENATA DOS SANTOS ALVARENGA - UFRGS