@Article{LimaRoBaMeCaVa:2017:NeFaRe,
author = "Lima, Jean C. F. and Rossetti, Dilce de F{\'a}tima and Barbosa,
Jos{\'e} A. and Medeiros, Walter Eug{\^e}nio de and Castro,
David L. de and Vasconcelos, David L.",
affiliation = "{Universidade Federal do Rio Grande do Norte (UFRN)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Universidade Federal de Pernambuco (UFPE)} and {Universidade
Federal do Rio Grande do Norte (UFRN)} and {Universidade Federal
do Rio Grande do Norte (UFRN)} and {Universidade Federal do Rio
Grande do Norte (UFRN)}",
title = "Neogene-quaternary fault reactivation influences coastal basin
sedimentation and landform in the continental margin of NE
Brazil",
journal = "Quaternary International",
year = "2017",
volume = "438",
pages = "92--107",
keywords = "Post-rift reactivation, neotectonic landform, neogene-quaternary
sedimentation.",
abstract = "We investigate the role of reactivation of Precambrian basement
fabric in the tectono-sedimentary and geomorphological evolution
of the Para{\'{\i}}ba Basin, continental margin of northeastern
Brazil, during the Cretaceous, Neogene, and Quaternary. This basin
represents part of the last bridge between South America and
Africa before the last breakup stage of the South Atlantic rifting
in the early Cretaceous. The Para{\'{\i}}ba Basin infill is
composed of siliciclastic and carbonate Cretaceous units, as well
as aeolian, fluvial and marine Quaternary units. We used shuttle
radar imagery, aeromagnetic, wellbore and field data. The
reduced-to-the-pole magnetic map (RTP) indicates the continuity of
the steeply dipping Precambrian basement shear zones beneath the
Para{\'{\i}}ba Basin. The combined analysis of surface and
subsurface data shows that NE-SW and E-W-striking shear zones were
subjected to brittle reactivation in the Aptian-Middle Albian
during the basin opening and again in the Neogene-Quaternary,
forming a system of horsts and grabens along the basin; some of
these structures such as the E-W-oriented Pernambuco shear zone
present modern-day seismicity. N-S- and mainly NW-SE-striking
transfer faults cut across Aptian-Middle Albian to
Neogene-Quaternary strata. These four main fault directions
control main river channels and alluvial valleys up to 2 km wide.
Topographic breaks up to 50 m were created by late reactivation of
rift faults, which mark the boundary between horsts and grabens
along the basin. In addition, structural data evidence
syn-tectonic faulting with vertical offsets up to 80 m in the
Cretaceous and up to 70 m in the Neogene-Quaternary. We conclude
that shear zones across the study area are long-lived structures
that have behaved as weakness zones. Their neotectonic brittle
reactivation has controlled sediment deposition and landform
development, which continued through the Neogene-Quaternary.",
doi = "10.1016/j.quaint.2016.03.026",
url = "http://dx.doi.org/10.1016/j.quaint.2016.03.026",
issn = "1040-6182",
label = "lattes: 0307721738107549 2 LimaRoBeBaMeCaVa:2017:NeFaRe",
language = "en",
targetfile = "lima_neogene.pdf",
urlaccessdate = "25 abr. 2024"
}