@Article{AndradesFoRossBeze:2021:UnPoSt,
author = "Andrades Filho, Cl{\'o}dis de Oliveira and Rossetti, Dilce de
F{\'a}tima and Bezerra, Francisco Hil{\'a}rio Rego",
affiliation = "{Universidade de S{\~a}o Paulo (USP)} and {Instituto Nacional de
Pesquisas Espaciais (INPE)} and {Universidade Federal do Rio
Grande do Norte (UFRN)}",
title = "The unsteady post-rift stage of the South American passive margin
based on the tectono-sedimentary evolution of the onshore
Para{\'{\i}}ba Basin, NE Brazil",
journal = "Quaternary International",
year = "2021",
volume = "580",
pages = "100--119",
month = "Apr.",
keywords = "Brittle and ductile deformation, Tectono–sedimentary analysis,
Neogene-late Pleistocene, Neotectonics.",
abstract = "The post-rift tectono-sedimentary history of passive margins has
been an issue of increased interest after the perception of their
unsteady nature during the Neogene and Quaternary. The evolution
of the eastern South America margin might be benefited from
investigations of the sedimentary record in a number of marginal
basins. The Para{\'{\i}}ba Basin is of particular interest to
discuss the post-rift evolution of the South American passive
margin, because it represents the last bridge with the African
plate. This work aims to analyze the post-rift sedimentary record
of the onshore Para{\'{\i}}ba Basin as a contribution to discuss
the neotectonic history of the South American passive margin.
Surface and subsurface data were integrated from outcrops, deep
stratigraphic profiles, airborne geophysical maps and remote
sensing products. The depositional and denudational processes in
this basin were a result of tectonic subsidence and uplifting.
Tectonics after the main rifting phase are indicated by abundant
structures, including normal, reverse, and strikeslip faults, as
well as folds that affected the Neogene and Late Pleistocene
sedimentary deposits. The ductile and brittle deformation resulted
mainly from multiple reactivations of EW, NESW and NWSE trending
basement shear zones. The deformation mechanism included
distension and compression under a strikeslip regime. Tectonic
reactivations even during the late Pleistocene support an unsteady
South Atlantic passive continental margin throughout the
postrifting stage.",
doi = "10.1016/j.quaint.2020.10.051",
url = "http://dx.doi.org/10.1016/j.quaint.2020.10.051",
issn = "1040-6182",
language = "en",
targetfile = "andrades_unstead.pdf",
urlaccessdate = "20 maio 2024"
}