%0 Journal Article
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%X Late Quaternary deposits in the northeastern Brazil have been scarcely investigated, despite their relevance to the discussion of the post-rift evolution of the South American passive margin within the context of landform, sea level and tectonic deformation. Sedimentological, stratigraphic and morphological characterization of these deposits, referred as Post-Barreiras Sediments, led to their distinction from underlying Early/Middle Miocene strata. Based on optically stimulated luminescence (OSL) dating, two sedimentary units (PB1 and PB2) were recognized and related to the time intervals between 74.8 +/- 9.3 and 30.8 +/- 6.9 ka, and 8.8 +/- 0.9 and 1.8 +/- 0.2 ka, respectively. Unit PB1 consists of indurated sandstones and breccias either with massive bedding or complex types of soft sediment deformation structures generated by contemporaneous seismic activity. Unit PB2 is composed of massive sands or sands related to structures developed by dissipation of dunes. The present work, focusing on the Post-Barreiras Sediments, discusses landform, sea level and tectonics of the eastern South American passive margin during the latest Quaternary. Non-deposition and sub-aerial exposure related to the Tortonian worldwide low sea level combined with tectonic quiescence followed the Miocene transgression. Tectonic deformation in the latest Pleistocene created space to accommodate unit PB1 in downthrown faulted blocks and, perhaps, also synclines produced by strike-slip deformation. Although deposition of this unit was simultaneous with the progressive fall in sea level that followed the Last Interglacial Maximum, punctuated rises combined with land subsidence led to marine deposition close to the modern coastline. Renewed subsidence in the Holocene gave rise to accommodation of the Post-Barreiras Sediments. Most of unit PB2 was deposited during the Holocene Transgression, but it is not composed of marine sediments, which suggests either an insignificant rise in relative sea level or aeolian reworking of thin transgressive sands. The data presented here lead to a review of the evolution of the South American passive margin based on assumptions of uniform sedimentation and undeformed planation surfaces over a wide coastal area of the northeastern Brazil. (C) 2011 Elsevier B.V. All rights reserved.
%8 Feb.
%N 1-4
%T Late Quaternary sedimentation in the Paraíba Basin, Northeastern Brazil: landform, sea level and tectonics in Eastern South America passive margin
%@electronicmailaddress rossetti@dsr.inpe.br
%@electronicmailaddress
%@electronicmailaddress
%@electronicmailaddress valerian@dsr.inpe.br
%@secondarytype PRE PI
%K Sedimentary facies, Stratigraphy, Luminescence dating, Neotectonics, Sea level, Landform, South American passive margin, COSEISMIC REACTIVATION, QUARTZ, EVOLUTION, HOLOCENE, MARINE, SINGLE, PALEOGEOGRAPHY, PROTOCOL, DEPOSITS, ISLAND.
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%@group DSR-OBT-INPE-MCT-BR
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%@group DSR-OBT-INPE-MCT-BR
%@group DSR-OBT-INPE-MCT-BR
%@e-mailaddress rossetti@dsr.inpe.br
%3 sdarticle-7.pdf
%@secondarykey INPE--PRE/
%@secondarymark A1_CIÊNCIAS_BIOLÓGICAS_I A2_ECOLOGIA_E_MEIO_AMBIENTE A1_FILOSOFIA_/_TEOLOGIA:subcomissão_FILOSOFIA A2_GEOCIÊNCIAS A1_GEOGRAFIA A1_INTERDISCIPLINAR A2_SAÚDE_COLETIVA
%F lattes: 0307721738107549 1 RossettiBGVATB:2011:LaSeLe
%@issn 0031-0182
%2 dpi.inpe.br/plutao/2011/06.11.03.32
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Univ Fed Rio Grande Norte UFRN, Natal, RN, Brazil
%@affiliation Univ Sao Paulo USP, Sao Paulo, Brazil
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Fac Tecnol Sao Paulo FATEC SP, Sao Paulo, Brazil
%@affiliation Fac Tecnol Sao Paulo FATEC SP, Sao Paulo, Brazil
%@affiliation Univ Sao Paulo USP, Sao Paulo, Brazil
%@project FAPESP[006/04687-7]
%B Palaeogeography, Palaeoclimatology, Palaeoecology
%@versiontype publisher
%P 191-204
%4 dpi.inpe.br/plutao/2011/06.11.03.31.59
%@documentstage not transferred
%D 2011
%V 300
%@doi 10.1016/j.palaeo.2010.12.026
%A Rossetti, Dilce de Fátima,
%A Bezerra, Francisco Hilário Rego,
%A Góes, Ana Maria,
%A Valeriano, Márcio de Morisson,
%A Andrades Filho, Clódis de Oliveira,
%A Mittani, Juan Carlos Ramirez,
%A Tatumi, Sonia Hatsue,
%A Brito-Neves, Beijamim Bley,
%@dissemination WEBSCI; PORTALCAPES; AGU; MGA; COMPENDEX.
%@area SRE