Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/27124
Title: Tectono-stratigraphic evolution of the Upper Jurassic–Neocomian rift succession, Araripe Basin, Northeast Brazil
Authors: Scherer, Claiton Marlon dos Santos 
Sá, Emanuel Ferraz Jardim de 
Córdoba, Valéria Centurion 
Sousa, Debora do Carmo 
Aquino, Mayara Martins 
Cardoso, Fátima Maria Canelas 
Keywords: Araripe Basin; Rift Basin; Continental sequence stratigraphy; Continental depositional systems
Issue Date: Jan-2014
Publisher: Elsevier
Citation: SCHERER, Claiton Marlon dos Santos [et al.] - Tectono-stratigraphic evolution of the Upper Jurassic–Neocomian rift succession, Araripe Basin, Northeast Brazil. "Journal of South American Earth Sciences". ISSN 0895-9811. Vol. 49 (2014) p. 106-122
Serial title, monograph or event: Journal of South American Earth Sciences
Volume: 49
Abstract: The rift succession of the Araripe Basin can be subdivided into four depositional sequences, bounded by regional unconformities, which record different palaeogeographic and palaeoenvironmental contexts. Sequence I, equivalent to the Brejo Santo Formation, is composed of fluvial sheetflood and floodplain facies association, while Sequence II, correspondent to the lower portion of the Missão Velha Formation, is characterised by braided fluvial channel belt deposits. The fluvial deposits of Sequences I and II show palaeocurrents toward SE. The Sequence III, correspondent to the upper portion of Missão Velha Formation, is composed of fluvial sheetflood deposits, which are overlain by braided fluvial channel deposits displaying a palaeocurrent pattern predominantly toward SW to NW. Sequence IV, equivalent to the Abaiara Formation, is composed of fluvio–deltaic–lacustrine strata with polimodal paleocurrent pattern. The type of depositional systems, the palaeocurrent pattern and the comparison with general tectono-stratigraphic rift models led to the identification of different evolutionary stages of the Araripe Basin. Sequences I, II and III represent the record of a larger basin associated to an early rift stage. However, the difference of the fluvial palaeocurrent between sequences II and III marks a regional rearrangement of the drainage system related to tectonic activity that compartmentalised the large endorheic basin, defining more localised drainage basins separated by internal highs. Sequence IV is associated with the renewal of the landscape and implantation of half-graben systems. The high dispersion of palaeocurrents trends indicate that sedimentary influx occurs from different sectors of the half-grabens.
URI: http://hdl.handle.net/10316/27124
ISSN: 0895-9811
DOI: 10.1016/j.jsames.2013.10.007
Rights: openAccess
Appears in Collections:I&D CGUC - Artigos em Revistas Internacionais
FCTUC Ciências da Terra - Artigos em Revistas Internacionais

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