New latitude-based nannofossil zonations for the Campanian-Maastrichtian of the South Atlantic Ocean and their paleoceanographic implications

The global evolution of calcareous nannofossils during the Campanian-Maastrichtian interval is not fully understood, and nannofossil zonations for the central and South Atlantic Ocean are yet to be constructed. Here, we test the applicability of previous calcareous nannofossil zonations developed fo...

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Detalles Bibliográficos
Publicado: 2016
Materias:
Atlantic Ocean
Biostratigraphy
Calcareous nannofossils
Late Cretaceous
Paleoceanography
biostratigraphy
Campanian
Cretaceous
Deep Sea Drilling Project
Maastrichtian
magnetostratigraphy
nanofossil
paleoceanography
Atlantic Ocean (South)
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00310182_v452_n_p55_doMonteGuerra
http://hdl.handle.net/20.500.12110/paper_00310182_v452_n_p55_doMonteGuerra
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_00310182_v452_n_p55_doMonteGuerra
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spelling paper:paper_00310182_v452_n_p55_doMonteGuerra2023-06-08T14:56:44Z New latitude-based nannofossil zonations for the Campanian-Maastrichtian of the South Atlantic Ocean and their paleoceanographic implications Atlantic Ocean Biostratigraphy Calcareous nannofossils Late Cretaceous Paleoceanography biostratigraphy Campanian Cretaceous Deep Sea Drilling Project Maastrichtian magnetostratigraphy nanofossil paleoceanography Atlantic Ocean Atlantic Ocean (South) The global evolution of calcareous nannofossils during the Campanian-Maastrichtian interval is not fully understood, and nannofossil zonations for the central and South Atlantic Ocean are yet to be constructed. Here, we test the applicability of previous calcareous nannofossil zonations developed for other ocean basins, for biostratigraphy in the South Atlantic Ocean, and refine Campanian-Maastrichtian biostratigraphy in the region. We document calcareous nannofossil distributions at Deep Sea Drilling Project (DSDP) and Ocean Drilling Program (ODP) sites from the high, mid and low latitudes in the South Atlantic Ocean (DSDP Sites 354, 356, 511, 525A, and 530A, and ODP Sites 690C; 700B; 661A, and 1258A). Combining nannofossil occurrences with magnetostratigraphic schemes previously constructed for some of the sites, we propose three new zonations tied to the global magnetostratigraphic chrons, with distinct bio-horizons selected at different latitudinal regions. In this study we present detailed definitions of new South Atlantic Ocean Low-latitude (SAL), South Atlantic Mid-latitude (SAM) and South Atlantic High-latitude (SAH) zonations. We identified significant diachronism of some species between latitudes throughout the Campanian and Maastrichtian. These species diachronism, mainly between zonal markers from low and mid latitudes during the late Maastrichtian, was probably related to migration patterns due to fundamental paleoceanographic changes. © 2016 Elsevier B.V. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00310182_v452_n_p55_doMonteGuerra http://hdl.handle.net/20.500.12110/paper_00310182_v452_n_p55_doMonteGuerra
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Atlantic Ocean
Biostratigraphy
Calcareous nannofossils
Late Cretaceous
Paleoceanography
biostratigraphy
Campanian
Cretaceous
Deep Sea Drilling Project
Maastrichtian
magnetostratigraphy
nanofossil
paleoceanography
Atlantic Ocean
Atlantic Ocean (South)
spellingShingle Atlantic Ocean
Biostratigraphy
Calcareous nannofossils
Late Cretaceous
Paleoceanography
biostratigraphy
Campanian
Cretaceous
Deep Sea Drilling Project
Maastrichtian
magnetostratigraphy
nanofossil
paleoceanography
Atlantic Ocean
Atlantic Ocean (South)
New latitude-based nannofossil zonations for the Campanian-Maastrichtian of the South Atlantic Ocean and their paleoceanographic implications
topic_facet Atlantic Ocean
Biostratigraphy
Calcareous nannofossils
Late Cretaceous
Paleoceanography
biostratigraphy
Campanian
Cretaceous
Deep Sea Drilling Project
Maastrichtian
magnetostratigraphy
nanofossil
paleoceanography
Atlantic Ocean
Atlantic Ocean (South)
description The global evolution of calcareous nannofossils during the Campanian-Maastrichtian interval is not fully understood, and nannofossil zonations for the central and South Atlantic Ocean are yet to be constructed. Here, we test the applicability of previous calcareous nannofossil zonations developed for other ocean basins, for biostratigraphy in the South Atlantic Ocean, and refine Campanian-Maastrichtian biostratigraphy in the region. We document calcareous nannofossil distributions at Deep Sea Drilling Project (DSDP) and Ocean Drilling Program (ODP) sites from the high, mid and low latitudes in the South Atlantic Ocean (DSDP Sites 354, 356, 511, 525A, and 530A, and ODP Sites 690C; 700B; 661A, and 1258A). Combining nannofossil occurrences with magnetostratigraphic schemes previously constructed for some of the sites, we propose three new zonations tied to the global magnetostratigraphic chrons, with distinct bio-horizons selected at different latitudinal regions. In this study we present detailed definitions of new South Atlantic Ocean Low-latitude (SAL), South Atlantic Mid-latitude (SAM) and South Atlantic High-latitude (SAH) zonations. We identified significant diachronism of some species between latitudes throughout the Campanian and Maastrichtian. These species diachronism, mainly between zonal markers from low and mid latitudes during the late Maastrichtian, was probably related to migration patterns due to fundamental paleoceanographic changes. © 2016 Elsevier B.V.
title New latitude-based nannofossil zonations for the Campanian-Maastrichtian of the South Atlantic Ocean and their paleoceanographic implications
title_short New latitude-based nannofossil zonations for the Campanian-Maastrichtian of the South Atlantic Ocean and their paleoceanographic implications
title_full New latitude-based nannofossil zonations for the Campanian-Maastrichtian of the South Atlantic Ocean and their paleoceanographic implications
title_fullStr New latitude-based nannofossil zonations for the Campanian-Maastrichtian of the South Atlantic Ocean and their paleoceanographic implications
title_full_unstemmed New latitude-based nannofossil zonations for the Campanian-Maastrichtian of the South Atlantic Ocean and their paleoceanographic implications
title_sort new latitude-based nannofossil zonations for the campanian-maastrichtian of the south atlantic ocean and their paleoceanographic implications
publishDate 2016
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00310182_v452_n_p55_doMonteGuerra
http://hdl.handle.net/20.500.12110/paper_00310182_v452_n_p55_doMonteGuerra
_version_ 1768544720953278464

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