Late Neogene sequence stratigraphic evolution of the <i>Foz do Amazonas</i> Basin, Brazil

Gorini, Christian; Haq, Bilal U.; Reis, Antônio Tadeu dos; Silva, Cleverson Guizan; Cruz, Alberto Machado; Soares, Emílio Alberto Amaral; Grangeon, Didier

doi:10.1111/ter.12083

Cited by 58 publications

(58 citation statements)

References 23 publications

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“…The global sea level curve suggests that this marine-continental transition developed +70 m above the present-day sea level (Fig. 18; Gorini et al, 2014). As a consequence, the marinecontinental transition there has probably risen around 200 m since the late Zanclean, that confirms the relatively weak epeirogenic uplift of the Canigou Massif since that time.…”

Section: Interest Of the Olistostrome To Reconstruct The Uplift Of Thmentioning

confidence: 52%

“…Uncertainties on the denudation rate are too high to determine the exact end of ria infilling with the present-day coastline, but it gives a maximum age of 3.4 Ma. Moreover, larger scale fluctuations in sea level since 3.4 Ma (Miller et al, 2011;Gorini et al, 2014) make the history of infilling complex, and the assumption of a constant denudation rate probably wrong. In any case, the predicted age does not contradict the marine flooding of the Leucate -La Franqui Plateau estimated at 3.8 Ma (Fig.…”

Section: Estimated Age Of the End Of Infillingmentioning

confidence: 99%

“…This scheme was tested with regards to the fluctuations of the global sea level (Miller et al, 2011;Gorini et al, 2014) (Fig. 18).…”

Section: Attempt At Correlation With Sea Level Fluctuationsmentioning

confidence: 99%

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The Roussillon Basin (S. France): A case-study to distinguish local and regional events between 6 and 3 Ma

Clauzon

Strat²,

Duvail³

et al. 2015

Marine and Petroleum Geology

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The Roussillon Basin is a non-silled Miocene sedimentary basin filling a late Oligocene-early Miocene graben. The basin was intensively impacted by the 2 Messinian fluvial erosion, as evidenced in exposed sections, in seismic profiles and in deep boreholes drilled for hydrocarbon exploration. As the basin was open to the Mediterranean Sea, the huge drop in sea level at the peak of the Messinian Salinity Crisis is clearly recorded, along with the subsequent sudden marine reflooding and the resulting prograding sedimentary filling, particularly in Gilbert-type fan deltas. Here, the Messinian Erosional Surface (MES) is accurately mapped in a high-resolution document, which corrects the confusion resulting from the set of 1:50,000 scale regional maps. Aim of the 3D reconstruction of the MES is to modernize geological mapping, a crucial challenge for Mediterranean and peripheral areas. Thanks to a reliable chronostratigraphy provided by planktonic foraminifers, calcareous nannofossils, micro-and macro-mammal remains, paleomagnetism and a 10 Be cosmogenic nuclide-derived study, our reconstruction is one of the most comprehensive models of changes in sea level from 6 to 3 Ma. After the marine reflooding of the Mediterranean Basin at 5.46 Ma, the fluctuations in sea level recorded in the Roussillon Basin were forced by global changes. Following reflooding, the Prades large olistostrome collapsed prepared by the previous exhumation along the Canigou fault. The olistostrome is a good example of a local accident resulting from Messinian events. The exceptional changes in sea level at the peak of the Messinian Salinity Crisis deeply marked the Roussillon Basin, momentarily overprinting the Pyrenean orogenesis.

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Section: Interest Of the Olistostrome To Reconstruct The Uplift Of Thmentioning

confidence: 52%

Section: Estimated Age Of the End Of Infillingmentioning

confidence: 99%

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The Roussillon Basin (S. France): A case-study to distinguish local and regional events between 6 and 3 Ma

Clauzon

Strat²,

Duvail³

et al. 2015

Marine and Petroleum Geology

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“…Likewise, the preservation of older sequences in the Foz do Amazonas Basin shows to be in the incised canyon floor rather than along the shelf area (Gorini et al 2013). As the sea level rose over the shelf 's edge, some sequences began to be preserved on the continental shelf once again.…”

Section: Purus Arch and Amazon Basinmentioning

confidence: 99%

Eustatic and tectonic change effects in the reversion of the transcontinental Amazon River drainage system

Caputo

Soares

2016

Braz. J. Geol.

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The development of the transcontinental Amazon River System involved geological events in the Andes Chain; Vaupés, Purus and Gurupá arches; sedimentary basins of the region and sea level changes. The origin and age of this river have been discussed for decades, and many ideas have been proposed, including those pertaining to it having originated in the Holocene, Pleistocene, Pliocene, Late Miocene, or even earlier times. Under this context, the geology of the sedimentary basins of northern Brazil has been analyzed from the Mesozoic time on, and some clarifications are placed on its stratigraphy. Vaupés Arch, in Colombia, was uplifted together with the Andean Mountains in the Middle Miocene time. In the Cenozoic Era, the Purus Arch has not blocked this drainage system westward to marine basins of Western South America or eastward to the Atlantic Ocean. Also the Gurupá Arch remained high up to the end of Middle Miocene, directing this drainage system westward. With the late subsidence and breaching of the Gurupá Arch and a major fall in sea level, at the beginning of the Late Miocene, the Amazon River quickly opened its pathway to the west, from the Marajó Basin, through deep headward erosion, capturing a vast drainage network from cratonic and Andean areas, which had previously been diverted towards the Caribbean Sea. During this time, the large siliciclastic influx to the Amazon Mouth (Foz do Amazonas) Basin and its fan increased, due to erosion of large tracts of South America, linking the Amazon drainage network to that of the Marajó Basin. This extensive exposure originated the Late Miocene (Tortonian) unconformity, which marks the onset of the transcontinental Amazon River flowing into the Atlantic Ocean.

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“…Esse evento pode ser sustentado pela origem da foz do Rio Amazonas no Oceano Atlântico no período entre 11.8 e 8.3 Ma (Figueiredo et al, 2009;Gorini et al, 2014).…”

Section: Introductionunclassified

Palinoestratigrafia da Formação Solimões: comparação entre bioestratigrafia tradicional e o método de Associações Unitárias

Kachniasz¹,

Silva-Caminha²

2017

Rev. bras. paleontol.

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-PALYNOSTRATIGRAPHY SOLIMÕESRESUMO -Análises palinológicas foram realizadas em 48 amostras coletadas nos poços 1AS-31-AM e 1AS-34-AM a fim de se estabelecer um quadro bioestratigráfico local usando métodos bioestratigráficos qualitativos e quantitativos. Os poços foram locados para a pesquisa do potencial linhítico da Formação Solimões, na década de 1970. Nossos resultados em palinoestratigrafia, pelo método tradicional, sugerem idades Neomioceno e Plioceno. As espécies-índice como Grimsdalea magnaclavata, grãos de pólen fenestrados, Ladakhipollenites? caribbiensis e Echitricolporites mcneillyi permitem incluir tais seções dentro das subzonas Psilatricolporites caribbiensis e Echitricolporites-Alnipollenites sensu Lorente. Usando o método de Associações Unitárias, sete associações unitárias e quatro zonas foram criadas indicando uma composição de espécies similares entre os poços. Comparações entre os dois métodos indicam que ambos os poços são contemporâneos.

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Late Neogene sequence stratigraphic evolution of the Foz do Amazonas Basin, Brazil

Cited by 58 publications

References 23 publications

The Roussillon Basin (S. France): A case-study to distinguish local and regional events between 6 and 3 Ma

The Roussillon Basin (S. France): A case-study to distinguish local and regional events between 6 and 3 Ma

Eustatic and tectonic change effects in the reversion of the transcontinental Amazon River drainage system

Palinoestratigrafia da Formação Solimões: comparação entre bioestratigrafia tradicional e o método de Associações Unitárias

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