Seismogenic faulting in the Meruoca granite, NE Brazil, consistent with a local weak fracture zone

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Autor(es): dc.creatorMoura, Ana Catarina de Almeida-
Autor(es): dc.creatorOliveira, Paulo H. S. de-
Autor(es): dc.creatorFerreira, Joaquim Mendes-
Autor(es): dc.creatorBezerra, Francisco Hilário Rego-
Autor(es): dc.creatorFuck, Reinhardt Adolfo-
Autor(es): dc.creatorNascimento, Aderson Farias do-
Data de aceite: dc.date.accessioned2021-10-14T18:09:43Z-
Data de disponibilização: dc.date.available2021-10-14T18:09:43Z-
Data de envio: dc.date.issued2017-02-13-
Data de envio: dc.date.issued2017-02-13-
Data de envio: dc.date.issued2014-10-
Fonte completa do material: dc.identifierhttp://repositorio.unb.br/handle/10482/22479-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1590/0001-3765201420130031-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/624956-
Descrição: dc.descriptionA sequence of earthquakes occurred in 2008 in the Meruoca granitic pluton, located in the northwestern part of the Borborema Province, NE Brazil. A seismological study defined the seismic activity occurring along the seismically-defined Riacho Fundo fault, a 081° striking, 8 km deep structure. The objective of this study was to analyze the correlation between this seismic activity and geological structures in the Meruoca granite. We carried out geological mapping in the epicentral area, analyzed the mineralogy of fault rocks, and compared the seismically-defined Riacho Fundo fault with geological data. We concluded that the seismically-defined fault coincides with ∼E–W-striking faults observed at outcrop scale and a swarm of Mesozoic basalt dikes. We propose that seismicity reactivated brittle structures in the Meruoca granite. Our study highlights the importance of geological mapping and mineralogical analysis in order to establish the relationships between geological structures and seismicity at a given area.-
Formato: dc.formatapplication/pdf-
Publicador: dc.publisherAcademia Brasileira de Ciências-
Direitos: dc.rightsAcesso Aberto-
Direitos: dc.rightsAnais da Academia Brasileira de Ciências - This is an Open Access article distributed under the terms of the Creative Commons(Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Fonte: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000401631&lng=en&nrm=iso. Acesso em: 2 jun. 2016.-
Palavras-chave: dc.subjectSismos-
Palavras-chave: dc.subjectSismologia-
Palavras-chave: dc.subjectMapeamento geológico-
Título: dc.titleSeismogenic faulting in the Meruoca granite, NE Brazil, consistent with a local weak fracture zone-
Tipo de arquivo: dc.typelivro digital-
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