@Article{BezerraROMBBNDAG:2014:NeReSh,
author = "Bezerra, F. H. R. and Rossetti, Dilce de F{\'a}tima and Oliveira,
R. G. and Medeiros, W. E. and Brito Neves, B. B. and Balsamo, F.
and Nogueira, F. C. C. and Dantas, E. L. and Andrades Filho, C.
and Goes, A. M.",
affiliation = "Univ Fed Rio Grande do Norte, BR-59072970 Natal, RN, Brazil.;
CNPq, INCT ET, Inst Nacl Ciencia \& Tecnol Estudos Tecton,
Brasilia, DF, Brazil. and {Instituto Nacional de Pesquisas
Espaciais (INPE)} and Serv Geol Brasil CPRM, Rio De Janeiro,
Brazil. and Univ Fed Rio Grande do Norte, BR-59072970 Natal, RN,
Brazil.; Inst Nacl Ciencia \& Tecnol Geofis Petr CNPq, INCT GP,
Brasilia, DF, Brazil. and Univ Sao Paulo, Inst Geociencias,
BR-05508 Sao Paulo, Brazil. and Univ Parma, I-43100 Parma, Italy.
and CNPq, INCT ET, Inst Nacl Ciencia \& Tecnol Estudos Tecton,
Brasilia, DF, Brazil.; Univ Fed Campina Grande, Campina Grande,
Paraiba, Brazil. and CNPq, INCT ET, Inst Nacl Ciencia \& Tecnol
Estudos Tecton, Brasilia, DF, Brazil.; Univ Brasilia, BR-70910900
Brasilia, DF, Brazil. and Univ Estadual Rio Grande do Sul, Porto
Alegre, RS, Brazil. and Univ Sao Paulo, Inst Geociencias, BR-05508
Sao Paulo, Brazil.",
title = "Neotectonic reactivation of shear zones and implications for
faulting style and geometry in the continental margin of NE
Brazil",
journal = "Tectonophysics",
year = "2014",
volume = "614",
pages = "78--90",
month = "Feb.",
keywords = "continental margin, neotectonics, fault reactivation, post-rift
sediments.",
abstract = "The eastern continental margin of South America comprises a series
of rift basins developed during the breakup of Pangea in the
Jurassic-Cretaceous. We integrated high resolution aeromagnetic,
structural and stratigraphic data in order to evaluate the role of
reactivation of ductile, Neoproterozoic shear zones in the
deposition and deformation of post-rift sedimentary deposits in
one of these basins, the Paraiba Basin in northeastern Brazil.
This basin corresponds to the last part of the South American
continent to be separated from Africa during the Pangea breakup.
Sediment deposition in this basin occurred in the
Albian-Maastrichtian, Eocene-Miocene, and in the late Quaternary.
However, our investigation concentrates on the Miocene-Quaternary,
which we consider the neotectonic period because it encompasses
the last stress field. This consisted of an E-W-oriented
compression and a N-S-oriented extension. The basement of the
basin forms a slightly seaward-tilted ramp capped by a late
Cretaceous to Quaternary sedimentary cover similar to 100-400 m
thick. Aeromagnetic lineaments mark the major steeply-dipping,
ductile E-W- to NE-striking shear zones in this basement. The
ductile shear zones mainly reactivated as strike-slip, normal and
oblique-slip faults, resulting in a series of Miocene-Quaternary
depocenters controlled by NE-, E-W-, and a few NW-striking faults.
Faulting produced subsidence and uplift that are largely
responsible for the present-day morphology of the valleys and
tablelands in this margin. We conclude that Precambrian shear zone
reactivation controlled geometry and orientation, as well as
deformation of sedimentary deposits, until the Neogene-Quaternary.
(C) 2014 Elsevier B.V. All rights reserved.",
doi = "10.1016/j.tecto.2013.12.021",
url = "http://dx.doi.org/10.1016/j.tecto.2013.12.021",
issn = "0040-1951",
label = "isi 2014-05 BezerraROMBBNDAG:2014:NeReSh",
language = "en",
targetfile = "1-s2.0-S0040195114000055-main.pdf",
url = "http://dx.doi.org/10.1016/j.tecto.2013.12.021",
urlaccessdate = "28 abr. 2024"
}