The South American retroarc foreland system: The development of the Bauru Basin in the back-bulge province

Menegazzo, Mirian Costa; Catuneanu, Octavian; Chang, Hung Kiang

doi:10.1016/j.marpetgeo.2016.02.027

Cited by 117 publications

(56 citation statements)

References 224 publications

(385 reference statements)

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“…The species 83, a common ancestral to Notosuchidae, was isolated during the Coniacian/Santonian by the vicariant event of Node 66 causing the speciation of Notosuchus terrestris and Mariliasuchus amarali. Those events are probably associated to the uplift of Bauru Group margins in Santonian (Riccomini, 1997) and support a Santonian-Campanian age proposed by Menegazzo et al (2016) to Araçatuba and Adamantina formations. Node 56 is reconstructed as JP area by S-DIVA (100%), that result is found by BBM with 1.01% and area J with 97.77%.…”

Section: Discussionsupporting

confidence: 71%

Paleobiogeography of Cretaceous South American Mesoeucrocodylia: Contribution to the Knowledege of Biogeographical History of Gondwana and Laurasia

Geroto¹

2019

Preprint

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Aim: Despite Mesoeucrocodylia been the most expressive faunal elements in outcrops of Gondwana, with special attention to South American basin like Bauru Group in Parana Basin and Neuquén Group in Neuquén Basin the biogeographical studies has been almost descriptive. These studies point the hypothesis that vicariance, specially the event of breakup of Gondwana, occupy a main role in speciation and diversification of Mesoeucrocodylia in Cretaceous. The present research investigates the possibility of this hypothesis been true use two complementary methods of biogeographic analysis a priori.Location: The studied reach the sedimentary basins for Gondwana and Laurassa when Mesoeucrocodylia fossils are found (South America, Africa and Eurasia continents)Methods: Brook Parsimony Analysis, with use maximum parsimony, Bayesian Binary Method for Ancestral State, a maximum like hood method to large data set, and S-DIVA to test the vicariance hypothesis. The area cladograms area time calibrating used the Temporal Calibrating GACs.Results: Allow reconstruct the ancestral area to the ancestral lineages and track the origin of “Gondwanasuchia” mesoeucrocodylian to African portion, posterior dispersion to South America. Notosuchia had an almost South American history with only peripheral ancestral reach Africa and Peirosauridae divide in two lineages, Peirosaurinae developed almost in Africa and reach South America in Early Cretaceous and Pepesuchinae an endemic South American lineage. Main Conclusions: Dispersal, not vicariance, take the main role in the diversification of the Mesoeucrocodylia during the Cretaceous. Three migration routes between drain channels take place in Early Cretaceous, one of Peirosaurinae from Araripe Basin to southern portion of South America, another from Pepesuchinae to Bauru Group and the last one of Araripesuchidae from Neuquén Basin do Araripe Basin. With the isolation of Bauru Group in Santonian a series of sympatric speciation take place in Mesoeucrocodylia lineages and other groups like titanosaurids. These sympatric events need future investigations.

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Section: Discussionsupporting

confidence: 71%

Paleobiogeography of Cretaceous South American Mesoeucrocodylia: Contribution to the Knowledege of Biogeographical History of Gondwana and Laurasia

Geroto¹

2019

Preprint

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“…5). This Cenomanian to Santonian age for the Theropod has subsequently been applied to Gondwana vertebrate biostratigraphy in basins as far as the Bauru Basin in Brazil (Menegazzo et al, 2016). The existence of two ages for these deposits has required palaeontologists to continue to acknowledge the 30 Myr range of possible ages, making definitive placement of fossil discoveries in the context of Gondwanan vertebrate evolution difficult.…”

Section: Significance Of Stratigraphic Framework With Regard To Palamentioning

confidence: 99%

Refining stratigraphy and tectonic history using detrital zircon maximum depositional age: an example from the Cerro Fortaleza Formation, Austral Basin, southern Patagonia

2018

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The north–south trending, Late Cretaceous to modern Magallanes–Austral foreland basin of southernmost Patagonia lacks a unified, radiometric, age‐controlled stratigraphic framework. By simplifying the sedimentary fill of the basin to deep‐marine, shallow‐marine and terrestrial deposits, and combining 13 new U‐Pb detrital zircon maximum depositional ages (DZ MDAs) with published DZ MDAs and U‐Pb ash ages, we provide the first attempt at a unified, longitudinal stratigraphic framework constrained by radiometric age controls. We divide the foreland basin history into two phases, including (1) an initial Late Cretaceous shoaling upward phase and (2) a Cenozoic phase that overlies a Palaeogene unconformity. New DZ samples from the shallow‐marine La Anita Formation, the terrestrial Cerro Fortaleza Formation and several previously unrecognized Cenozoic units provide necessary radiometric age controls for the end of the Late Cretaceous foreland phase and the magnitude of the Palaeogene unconformity in the Austral sector of the basin. These samples show that the La Anita and Cerro Fortaleza Formations have Campanian DZ MDAs, and that overlying Cenozoic strata have Eocene to Miocene DZ MDAs. By filling this data gap, we are able to provide a first attempt at constructing a basinwide, age‐controlled stratigraphic framework for the Magallanes–Austral foreland basin. Results show southward progradation of shallow marine and terrestrial environments from the Santonian through the Maastrichtian, as well as a northward increase in the magnitude of the Palaeogene unconformity. Furthermore, our new age data significantly impact the chronology of fossil flora and dinosaur faunas in Patagonia.

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“…Os marcadores mais antigos da incisão fl uvial na média bacia do Rio Grande são fornecidos pelos sedimentos suprabasálticos da Formação Marília (Grupo Bauru) de idade Neocretácica (MENEGAZZO et al, 2016) e da Formação Itaqueri, atribuída ao Paleógeno (MELO & PONÇANO 1983;RICCOMINI, 1997;MENEGAZZO et al, 2016). O posicionamento dessas unidades permite inferir de forma aproximada a provável superfície deposicional a partir da qual se deu a incisão cenozoica na borda leste da Bacia do Paraná (Figura 1C).…”

Section: Procedimentos Metodológicosunclassified

“…A idade paleocênica aparenta ser a mais coerente, pois a deposição dos leques aluviais demandaria a existência de área fonte ainda elevada a leste/nordeste mesmo após a deposição da Formação Marília. Provavelmente a área fonte estaria vinculada aos remanescentes do Soerguimento do Alto Paranaíba (SAP) (PERDONCINI, 2003), contemporâneo ao magmatismo alcalino do Neocretáceo (HASUI, 2010;MENEGAZZO et al, 2016).…”

Section: Procedimentos Metodológicosunclassified

Evolução Da Rede De Drenagem E Evidências De Antigas Conexões Entre as Bacias Dos Rios Grande E São Francisco No Sudeste Brasileiro

Rezende

Salgado²,

Castro

2018

Rev. Bras. Geomorfol.

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Resumo:O presente trabalho investigou a evolução da rede de drenagem na alta/média bacia do Rio Grande, com foco em evidências de antigas conexões entre esta bacia e a bacia do Rio São Francisco no sudeste brasileiro. Foi executada a análise conjunta de registros sedimentares, anomalias de drenagem, eixos de soerguimento e dados termocronológicos disponíveis. Feições como um baixo divisor anômalo, um cotovelo de drenagem, uma garganta e um antigo eixo de soerguimento evidenciam que o alto curso do Rio Grande, hoje pertencente à bacia hidrográfi ca do Rio Paraná, encontrava-se previamente direcionado para norte, rumo ao Cráton do São Francisco. O divisor ancestral entre as duas bacias hidrográfi cas coincidia com o eixo soerguido de direção geral NNW-SSE ao longo das intrusões alcalinas Neocretáceas que bordejam a nordeste a Unidade geotectônica Bacia do Paraná. O rompimento do divisor ancestral e a consequente captura fl uvial provavelmente ocorreram após um soerguimento generalizado no Mioceno Médio, que causou a superimposição da drenagem a partir de uma paleosuperfície mais regular e a abertura de depressões. O baixo divisor anômalo na região de Pimenta-MG corresponde a um expressivo registro morfológico do paleovale que conectava as duas bacias atualmente separadas. Taxas médias de incisão de longo-termo foram estimadas em cerca de 10 m/Ma, com base no posicionamento das formações Marília e Itaqueri adjacentes ao médio vale do Rio Grande. Informações sobre o Artigo

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The South American retroarc foreland system: The development of the Bauru Basin in the back-bulge province

Cited by 117 publications

References 224 publications

Paleobiogeography of Cretaceous South American Mesoeucrocodylia: Contribution to the Knowledege of Biogeographical History of Gondwana and Laurasia

Paleobiogeography of Cretaceous South American Mesoeucrocodylia: Contribution to the Knowledege of Biogeographical History of Gondwana and Laurasia

Refining stratigraphy and tectonic history using detrital zircon maximum depositional age: an example from the Cerro Fortaleza Formation, Austral Basin, southern Patagonia

Evolução Da Rede De Drenagem E Evidências De Antigas Conexões Entre as Bacias Dos Rios Grande E São Francisco No Sudeste Brasileiro

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