Mid- to late Cretaceous Microbiostratigraphy, Palaeo-ecology and Palaeogeography of the Sergipe Basin, northeastern Brazil
The palaeo-ecology and biostratigraphy of foraminiferal, radiolarian and diatom assemblages have been studied through the upper Aptian to Maastrichtian sedimentary succession of the Sergipe Basin, northeastern Brazil. The systematic taxonomy of the microfauna studied is documented and completely rev...
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University of Plymouth
1989
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Online Access: | http://hdl.handle.net/10026.1/2016 https://doi.org/10.24382/3868 |
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ftunivplympearl:oai:pearl.plymouth.ac.uk:10026.1/2016 2024-04-21T08:07:47+00:00 Mid- to late Cretaceous Microbiostratigraphy, Palaeo-ecology and Palaeogeography of the Sergipe Basin, northeastern Brazil Koutsoukos, Eduardo Apostólos Machado School of Geography, Earth and Environmental Sciences 1989 application/pdf http://hdl.handle.net/10026.1/2016 https://doi.org/10.24382/3868 en eng University of Plymouth NOT AVAILABLE http://hdl.handle.net/10026.1/2016 http://dx.doi.org/10.24382/3868 Thesis 1989 ftunivplympearl https://doi.org/10.24382/3868 2024-03-27T18:00:32Z The palaeo-ecology and biostratigraphy of foraminiferal, radiolarian and diatom assemblages have been studied through the upper Aptian to Maastrichtian sedimentary succession of the Sergipe Basin, northeastern Brazil. The systematic taxonomy of the microfauna studied is documented and completely revised. Palaeo-environmental models, mostly derived from micropalaeontological and sedimentological criteria, are proposed for the distribution of the foraminiferal morphogroups. The palaeogeographic reconstruction of the studied area, from the upper Aptian to Maastrichtian, is presented. A refined microbiostratigraphic zonation scheme, based on all sections studied, is proposed and primarily defined for regional application. The composition and distribution patterns of the foraminiferal assemblages (diversity and abundance of morphogroups) are shown to be a direct response to overall palaeoceanographic conditions and to community strategies of exploitation of the trophic resources in the microhabitats. The foraminifera recovered - from the oldest, late Aptian, marine sediments reveal a characteristic Tethyan affinity and suggest that this area had at least minimal surface water exchange with low latitude central North Atlantic-western Tethyan bioprovinces, even possibly at intermediate (epi- to mesopelagic) water depths. Petroleo Brasileiro S.V. (PETROBRAS), Rio de Janeiro Thesis North Atlantic PEARL (Plymouth Electronic Archiv & ResearchLibrary, Plymouth University) |
institution |
Open Polar |
collection |
PEARL (Plymouth Electronic Archiv & ResearchLibrary, Plymouth University) |
op_collection_id |
ftunivplympearl |
language |
English |
description |
The palaeo-ecology and biostratigraphy of foraminiferal, radiolarian and diatom assemblages have been studied through the upper Aptian to Maastrichtian sedimentary succession of the Sergipe Basin, northeastern Brazil. The systematic taxonomy of the microfauna studied is documented and completely revised. Palaeo-environmental models, mostly derived from micropalaeontological and sedimentological criteria, are proposed for the distribution of the foraminiferal morphogroups. The palaeogeographic reconstruction of the studied area, from the upper Aptian to Maastrichtian, is presented. A refined microbiostratigraphic zonation scheme, based on all sections studied, is proposed and primarily defined for regional application. The composition and distribution patterns of the foraminiferal assemblages (diversity and abundance of morphogroups) are shown to be a direct response to overall palaeoceanographic conditions and to community strategies of exploitation of the trophic resources in the microhabitats. The foraminifera recovered - from the oldest, late Aptian, marine sediments reveal a characteristic Tethyan affinity and suggest that this area had at least minimal surface water exchange with low latitude central North Atlantic-western Tethyan bioprovinces, even possibly at intermediate (epi- to mesopelagic) water depths. Petroleo Brasileiro S.V. (PETROBRAS), Rio de Janeiro |
author2 |
School of Geography, Earth and Environmental Sciences |
format |
Thesis |
author |
Koutsoukos, Eduardo Apostólos Machado |
spellingShingle |
Koutsoukos, Eduardo Apostólos Machado Mid- to late Cretaceous Microbiostratigraphy, Palaeo-ecology and Palaeogeography of the Sergipe Basin, northeastern Brazil |
author_facet |
Koutsoukos, Eduardo Apostólos Machado |
author_sort |
Koutsoukos, Eduardo Apostólos Machado |
title |
Mid- to late Cretaceous Microbiostratigraphy, Palaeo-ecology and Palaeogeography of the Sergipe Basin, northeastern Brazil |
title_short |
Mid- to late Cretaceous Microbiostratigraphy, Palaeo-ecology and Palaeogeography of the Sergipe Basin, northeastern Brazil |
title_full |
Mid- to late Cretaceous Microbiostratigraphy, Palaeo-ecology and Palaeogeography of the Sergipe Basin, northeastern Brazil |
title_fullStr |
Mid- to late Cretaceous Microbiostratigraphy, Palaeo-ecology and Palaeogeography of the Sergipe Basin, northeastern Brazil |
title_full_unstemmed |
Mid- to late Cretaceous Microbiostratigraphy, Palaeo-ecology and Palaeogeography of the Sergipe Basin, northeastern Brazil |
title_sort |
mid- to late cretaceous microbiostratigraphy, palaeo-ecology and palaeogeography of the sergipe basin, northeastern brazil |
publisher |
University of Plymouth |
publishDate |
1989 |
url |
http://hdl.handle.net/10026.1/2016 https://doi.org/10.24382/3868 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
NOT AVAILABLE http://hdl.handle.net/10026.1/2016 http://dx.doi.org/10.24382/3868 |
op_doi |
https://doi.org/10.24382/3868 |
_version_ |
1796947826984353792 |