Chronostratigraphic framework for Upper Campanian-Maastrichtian sediments on the Blake Nose (subtropical North Atlantic)
A new chronostratigraphic framework is presented for upper Campanian-Maastrichtian pelagic sediments cored at DSDP/ODP Sites 390A/1049, 1050, and 1052, which were drilled across a 1300-m depth transect on the Blake Nose (subtropical western Atlantic Ocean). The planktonic foraminiferal zonation is b...
Published in: | The Journal of Foraminiferal Research |
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Language: | English |
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2008
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Online Access: | http://hdl.handle.net/10088/7430 https://doi.org/10.2113/gsjfr.38.2.162 |
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ftsmithonian:oai:repository.si.edu:10088/7430 2023-05-15T17:33:47+02:00 Chronostratigraphic framework for Upper Campanian-Maastrichtian sediments on the Blake Nose (subtropical North Atlantic) Huber, Brian T. MacLeod, Kenneth G. Tur, Nataliya A. 2008 1069722 bytes application/pdf http://hdl.handle.net/10088/7430 https://doi.org/10.2113/gsjfr.38.2.162 en_US eng Journal of Foraminiferal Research Huber, Brian T., MacLeod, Kenneth G., and Tur, Nataliya A. 2008. " Chronostratigraphic framework for Upper Campanian-Maastrichtian sediments on the Blake Nose (subtropical North Atlantic) ." Journal of Foraminiferal Research . 38 (2):162–182. https://doi.org/10.2113/gsjfr.38.2.162 0096-1191 http://hdl.handle.net/10088/7430 55806 doi:10.2113/gsjfr.38.2.162 Journal Article 2008 ftsmithonian https://doi.org/10.2113/gsjfr.38.2.162 2020-09-09T18:30:28Z A new chronostratigraphic framework is presented for upper Campanian-Maastrichtian pelagic sediments cored at DSDP/ODP Sites 390A/1049, 1050, and 1052, which were drilled across a 1300-m depth transect on the Blake Nose (subtropical western Atlantic Ocean). The planktonic foraminiferal zonation is based on standard global biozones for this interval, but rare and sporadic occurrence of two zonal biomarkers, Gansserina gansseri and Globotruncana aegyptiaca, precludes reliable identification of the nominate zones for those species. The Pseudoguembelina palpebra Partial-range Zone is defined as a means of subdividing this upper Campanian biostratigraphic interval. Planktonic foraminiferal, calcareous nannofossil and paleomagnetic datums are integrated to construct reliable age-depth curves for each of the Blake Nose drill sites. These age models are largely confirmed by Sr-isotopic data and suggest significant unconformities at various positions within the sections. Compilation of stable isotope datasets for this time interval from the Blake Nose sites reveals no significant shifts in {delta} 18O and {delta} 13C at the time of the inoceramid bivalve extinction (now dated as 68.568.7 Ma in the Blake Nose sections) and no correlation with proposed Campanian-Maastrichtian glacial intervals. However, benthic warming associated with Deccan volcanism during the late Maastrichtian is supported. NMNH NH-Paleobiology Article in Journal/Newspaper North Atlantic Unknown The Journal of Foraminiferal Research 38 2 162 182 |
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Open Polar |
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ftsmithonian |
language |
English |
description |
A new chronostratigraphic framework is presented for upper Campanian-Maastrichtian pelagic sediments cored at DSDP/ODP Sites 390A/1049, 1050, and 1052, which were drilled across a 1300-m depth transect on the Blake Nose (subtropical western Atlantic Ocean). The planktonic foraminiferal zonation is based on standard global biozones for this interval, but rare and sporadic occurrence of two zonal biomarkers, Gansserina gansseri and Globotruncana aegyptiaca, precludes reliable identification of the nominate zones for those species. The Pseudoguembelina palpebra Partial-range Zone is defined as a means of subdividing this upper Campanian biostratigraphic interval. Planktonic foraminiferal, calcareous nannofossil and paleomagnetic datums are integrated to construct reliable age-depth curves for each of the Blake Nose drill sites. These age models are largely confirmed by Sr-isotopic data and suggest significant unconformities at various positions within the sections. Compilation of stable isotope datasets for this time interval from the Blake Nose sites reveals no significant shifts in {delta} 18O and {delta} 13C at the time of the inoceramid bivalve extinction (now dated as 68.568.7 Ma in the Blake Nose sections) and no correlation with proposed Campanian-Maastrichtian glacial intervals. However, benthic warming associated with Deccan volcanism during the late Maastrichtian is supported. NMNH NH-Paleobiology |
format |
Article in Journal/Newspaper |
author |
Huber, Brian T. MacLeod, Kenneth G. Tur, Nataliya A. |
spellingShingle |
Huber, Brian T. MacLeod, Kenneth G. Tur, Nataliya A. Chronostratigraphic framework for Upper Campanian-Maastrichtian sediments on the Blake Nose (subtropical North Atlantic) |
author_facet |
Huber, Brian T. MacLeod, Kenneth G. Tur, Nataliya A. |
author_sort |
Huber, Brian T. |
title |
Chronostratigraphic framework for Upper Campanian-Maastrichtian sediments on the Blake Nose (subtropical North Atlantic) |
title_short |
Chronostratigraphic framework for Upper Campanian-Maastrichtian sediments on the Blake Nose (subtropical North Atlantic) |
title_full |
Chronostratigraphic framework for Upper Campanian-Maastrichtian sediments on the Blake Nose (subtropical North Atlantic) |
title_fullStr |
Chronostratigraphic framework for Upper Campanian-Maastrichtian sediments on the Blake Nose (subtropical North Atlantic) |
title_full_unstemmed |
Chronostratigraphic framework for Upper Campanian-Maastrichtian sediments on the Blake Nose (subtropical North Atlantic) |
title_sort |
chronostratigraphic framework for upper campanian-maastrichtian sediments on the blake nose (subtropical north atlantic) |
publishDate |
2008 |
url |
http://hdl.handle.net/10088/7430 https://doi.org/10.2113/gsjfr.38.2.162 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Journal of Foraminiferal Research Huber, Brian T., MacLeod, Kenneth G., and Tur, Nataliya A. 2008. " Chronostratigraphic framework for Upper Campanian-Maastrichtian sediments on the Blake Nose (subtropical North Atlantic) ." Journal of Foraminiferal Research . 38 (2):162–182. https://doi.org/10.2113/gsjfr.38.2.162 0096-1191 http://hdl.handle.net/10088/7430 55806 doi:10.2113/gsjfr.38.2.162 |
op_doi |
https://doi.org/10.2113/gsjfr.38.2.162 |
container_title |
The Journal of Foraminiferal Research |
container_volume |
38 |
container_issue |
2 |
container_start_page |
162 |
op_container_end_page |
182 |
_version_ |
1766132395564597248 |