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Bakevelliidae bivalves of the Romualdo Formation (Alagoas stage, Lower Cretaceous), Araripe Basin, Brazil: paleoenvironmental and paleogeographic significance

Grant number: 18/01750-7
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): June 01, 2018
Effective date (End): February 29, 2020
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Geology
Acordo de Cooperação: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:Marcello Guimarães Simões
Grantee:Mariza Gomes Rodrigues
Host Institution: Instituto de Geociências e Ciências Exatas (IGCE). Universidade Estadual Paulista (UNESP). Campus de Rio Claro. Rio Claro , SP, Brazil


The geological events related to the final stages of the Gondwana breakup and the subsequent opening of the South Atlantic Ocean caused fault reactivation of the Proterozoic Borborema Province and originated the Cretaceous deposits of the Araripe Basin. During Aptian times a widespread transgression took place in the Northeastern Brazil, culminating with the deposition of the marine strata of the Romualdo Formation. The 100-meter-thick carbonate-siliciclastic succession of the Romualdo Formation is characterized by a transgressive-regressive sequence bounded by regional unconformities. Several paleogeographic scenarios have been hypothesized about the origin and ways of the marine ingression that reached the Araripe Basin during the Lower Cretaceous. The most accepted theories advocate marine waters coming from North, through São Luís and Parnaíba basins, northeast, by the Potiguar Basin, and southeast, crossing the limits of the Sergipe-Alagoas basins. In this context, the bivalve mollusk from the Romualdo Formation, specially the Bakevelliidae, are key elements to elucidate the Aptian paleogeographic scenario. Bakevelliidae is an extinct family (Carboniferous-Eocene) of marine to salty water pterioid bivalves with wide paleobiogegraphic distribution. The integrated taxonomic, taphonomic, stratigraphic, paleoecologic and biocorrelation analysis of Bakevelliidae from the Romualdo Formation will be used to verify if: I- there is any affinity between invertebrate faunas in coeval unities from the Araripe Basin (Romualdo Formation), and the Sergipe Basin (Riachuelo Formation); II- a seaway could be existed between both sedimentary basins; and III- the invertebrate faunal diversity of the Romualdo Formation would be, at least in part, a result of immigrant elements (cosmopolitan) and not just endemic forms that evolved in situ in the Araripe Basin. (AU)

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Scientific publications (6)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
FILIPE GIOVANINI VAREJÃO; VICTOR RIBEIRO SILVA; MARIO LUIS ASSINE; LUCAS VERÍSSIMO WARREN; SUZANA APARECIDA MATOS; MARIZA GOMES RODRIGUES; FRANZ THEODOR FÜRSICH; MARCELLO GUIMARÃES SIMÕES. Marine or freshwater? Accessing the paleoenvironmental parameters of the Caldas Bed, a key marker bed in the Crato Formation (Araripe Basin, NE Brazil). BRAZILIAN JOURNAL OF GEOLOGY, v. 51, n. 1, . (17/22036-8, 18/01750-7, 16/13214-7, 14/00519-9, 17/20803-1)
RODRIGUES, M. G.; VAREJAO, F. G.; MATOS, S. A.; FUERSICH, F. T.; WARREN, L. V.; ASSINE, M. L.; SIMOES, M. G.. High-resolution taphonomy and sequence stratigraphy of internally complex, bakevelliid-dominated coquinas from the Aptian Romualdo Formation, Araripe Basin, NE Brazil. MARINE AND PETROLEUM GEOLOGY, v. 143, p. 22-pg., . (18/01750-7, 17/20803-1, 16/13214-7, 14/00519-9)
RODRIGUES, M. G.; MATOS, S. A.; VAREJAO, F. G.; FUERSICH, F. T.; WARREN, L. V.; ASSINE, M. L.; SIMOES, M. G.. Short-lived ``Bakevelliid-Sea{''} in the Aptian Romualdo Formation, Araripe Basin, northeastern Brazil. CRETACEOUS RESEARCH, v. 115, . (14/00519-9, 16/13214-7, 17/20803-1, 18/01750-7)
DA SILVA, VICTOR R.; VAREJAO, FILIPE G.; MATOS, SUZANA A.; RODRIGUES, MARIZA G.; FURSICH, FRANZ T.; SKAWINA, ALEKSANDRA; SCHNEIDER, SIMON; WARREN, V, LUCAS; ASSINE, MARIO L.; SIMOES, MARCELLO G.. New freshwater mussels (Bivalvia, Unionida) with potential trigonioidid and hyriid affinities from the Early Cretaceous of Brazil. GEOBIOS, v. 61, p. 41-54, . (14/00519-9, 17/22036-8, 16/13214-7, 18/01750-7, 17/20803-1)
RODRIGUES, M. G.; MATOS, S. A.; VAREJAO, F. G.; FUERSICH, F. T.; WARREN, L. V.; ASSINE, M. L.; SIMOES, M. G.. Short-lived "Bakevelliid-Sea" in the Aptian Romualdo Formation, Araripe Basin, northeastern Brazil. CRETACEOUS RESEARCH, v. 115, p. 20-pg., . (18/01750-7, 17/20803-1, 16/13214-7, 14/00519-9)
VAREJAO, F. G.; FUERSICH, F. T.; WARREN, V, L.; MATOS, S. A.; RODRIGUES, M. G.; ASSINE, M. L.; SALES, A. M. F.; SIMOES, M. G.. Microbialite fields developed in a protected rocky coastline: The shallow carbonate ramp of the Aptian Romualdo Formation (Araripe Basin, NE Brazil). SEDIMENTARY GEOLOGY, v. 389, p. 103-120, . (14/00519-9, 16/13214-7, 17/20803-1, 18/01750-7)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
RODRIGUES, Mariza Gomes. Bakevelliidae bivalves from the Romualdo Formation (Alagoas Stage, Lower Cretaceous), Araripe Basin, NE Brazil: paleoenvironmental and paleogeographic significance. 2020. Master's Dissertation - Universidade Estadual Paulista (Unesp). Instituto de Geociências e Ciências Exatas. Rio Claro Rio Claro.

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