Banca de QUALIFICAÇÃO: DAVID LINO VASCONCELOS
Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.DISCENTE : DAVID LINO VASCONCELOS
DATA : 25/07/2016
HORA: 08:00
LOCAL: Sala 01 PPGG
TÍTULO:
Brittle Reactivation of Shear Zones During the Cretaceous-Cenozoic in the Sergipe-Alagoas and Pernambuco Basins.
PALAVRAS-CHAVES:
Brittle Reactivation, Shear Zones, Neotectonic, Sergipe-Alagoas and Pernambuco Basins.
PÁGINAS: 34
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
RESUMO:
Brittle reactivations of ductile shear zones the crystalline basement has been registered in many continental margins in the world. These reactivations were responsible for the origin of the rift system of different basins during the opening of the South Atlantic. However, brittle reactivations of preexisting structures are also recorded in the post-rift phase of continental margin basins. The reactivations of these structures, especially the basement have been identified as a major factor in the evolution of these margins. In this study, we investigated the influence of brittle reactivations in ductile shear zones of the crystalline basement in the Sergipe-Alagoas and Pernambuco Basins. Here, we use aeromagnetic data and radar images in order to highlight the location and geometry of the shear zones in the crystalline basement below the sedimentary units of these basins and correlate with mapped faults. We note that these reactivations are expressed in the basin through the main structural features and acted as an attenuator of efforts during the opening of rift these basins. In addition, we also recorded that these reactivations influenced during the formation of the relief these basins. This is observed mainly in the northern edge of the coastal plain of the River and in the valleys of other rivers. We conclude that the shear zones were reactivated, especially in the Cretaceous, during the opening of the South Atlantic. However, these zones of shear and normal faults of the rift phase were reactivated in Cenozoic, during the post-rift phase these basins.
MEMBROS DA BANCA:
Interno - 1315614 - DAVID LOPES DE CASTRO
Presidente - 350640 - FRANCISCO HILARIO REGO BEZERRA
Interno - 2042405 - MOAB PRAXEDES GOMES
Interno - 349684 - WALTER EUGENIO DE MEDEIROS