Late Miocene continental sedimentation in southwestern Amazonia and its regional significance: Biotic and geological evidence
Fossil content (vertebrate paleofauna and palynology) indicates that the sediments of the Solimões Formation in Acre (SW Brazilian Amazonia) are continental, having been deposited by avulsive fluvial belts in a floodbasin-floodplain environment. The main source area was the Andes chain. Widespread l...
| Autor principal: | Latrubesse, Edgardo Manuel |
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| Outros Autores: | Silva, Silane A.F. da, Cozzuol, Mário Alberto, Absy, Maria Lúcia |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Journal of South American Earth Sciences
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/18699 |
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oai:repositorio:1-18699 |
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oai:repositorio:1-18699 Late Miocene continental sedimentation in southwestern Amazonia and its regional significance: Biotic and geological evidence Latrubesse, Edgardo Manuel Silva, Silane A.F. da Cozzuol, Mário Alberto Absy, Maria Lúcia Fossil Assemblage Miocene Paleoecology Paleogeography Paleontology Paleosol Sedimentation Swamp Atlantic Ocean Caribbean Sea Parana Basin South America Mammalia Vertebrata Fossil content (vertebrate paleofauna and palynology) indicates that the sediments of the Solimões Formation in Acre (SW Brazilian Amazonia) are continental, having been deposited by avulsive fluvial belts in a floodbasin-floodplain environment. The main source area was the Andes chain. Widespread lacustrine swampy deposits, stacked channel deposits, and paleosoils are typical elements that characterize the Solimões Formation sediments that outcrop in southwestern Brazilian Amazonia. New data on fossil vertebrate assemblages and palynology corroborate the Late Miocene age suggested previously and assign the fossils to the Huayquerian mammalian biozone, spanning 9-6.5 Ma. These geological and paleontological data show that the existence of an intracontinental seaway through SW Amazonia during the Late Miocene (11-10 Ma), connecting the Caribbean Sea with the Parana Basin as previously proposed is unsustainable, because the sediments used by previous authors to propose the seaway were deposited in a continental environment and are younger than 11-10 Ma. © 2006 Elsevier Ltd. All rights reserved. 2020-06-15T22:02:37Z 2020-06-15T22:02:37Z 2007 Artigo https://repositorio.inpa.gov.br/handle/1/18699 10.1016/j.jsames.2006.09.021 en Volume 23, Número 1, Pags. 61-80 Restrito Journal of South American Earth Sciences |
| institution |
Instituto Nacional de Pesquisas da Amazônia - Repositório Institucional |
| collection |
INPA-RI |
| language |
English |
| topic |
Fossil Assemblage Miocene Paleoecology Paleogeography Paleontology Paleosol Sedimentation Swamp Atlantic Ocean Caribbean Sea Parana Basin South America Mammalia Vertebrata |
| spellingShingle |
Fossil Assemblage Miocene Paleoecology Paleogeography Paleontology Paleosol Sedimentation Swamp Atlantic Ocean Caribbean Sea Parana Basin South America Mammalia Vertebrata Latrubesse, Edgardo Manuel Late Miocene continental sedimentation in southwestern Amazonia and its regional significance: Biotic and geological evidence |
| topic_facet |
Fossil Assemblage Miocene Paleoecology Paleogeography Paleontology Paleosol Sedimentation Swamp Atlantic Ocean Caribbean Sea Parana Basin South America Mammalia Vertebrata |
| description |
Fossil content (vertebrate paleofauna and palynology) indicates that the sediments of the Solimões Formation in Acre (SW Brazilian Amazonia) are continental, having been deposited by avulsive fluvial belts in a floodbasin-floodplain environment. The main source area was the Andes chain. Widespread lacustrine swampy deposits, stacked channel deposits, and paleosoils are typical elements that characterize the Solimões Formation sediments that outcrop in southwestern Brazilian Amazonia. New data on fossil vertebrate assemblages and palynology corroborate the Late Miocene age suggested previously and assign the fossils to the Huayquerian mammalian biozone, spanning 9-6.5 Ma. These geological and paleontological data show that the existence of an intracontinental seaway through SW Amazonia during the Late Miocene (11-10 Ma), connecting the Caribbean Sea with the Parana Basin as previously proposed is unsustainable, because the sediments used by previous authors to propose the seaway were deposited in a continental environment and are younger than 11-10 Ma. © 2006 Elsevier Ltd. All rights reserved. |
| format |
Artigo |
| author |
Latrubesse, Edgardo Manuel |
| author2 |
Silva, Silane A.F. da Cozzuol, Mário Alberto Absy, Maria Lúcia |
| author2Str |
Silva, Silane A.F. da Cozzuol, Mário Alberto Absy, Maria Lúcia |
| title |
Late Miocene continental sedimentation in southwestern Amazonia and its regional significance: Biotic and geological evidence |
| title_short |
Late Miocene continental sedimentation in southwestern Amazonia and its regional significance: Biotic and geological evidence |
| title_full |
Late Miocene continental sedimentation in southwestern Amazonia and its regional significance: Biotic and geological evidence |
| title_fullStr |
Late Miocene continental sedimentation in southwestern Amazonia and its regional significance: Biotic and geological evidence |
| title_full_unstemmed |
Late Miocene continental sedimentation in southwestern Amazonia and its regional significance: Biotic and geological evidence |
| title_sort |
late miocene continental sedimentation in southwestern amazonia and its regional significance: biotic and geological evidence |
| publisher |
Journal of South American Earth Sciences |
| publishDate |
2020 |
| url |
https://repositorio.inpa.gov.br/handle/1/18699 |
| _version_ |
1787141494318039040 |
| score |
11.755432 |