Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean)
A detailed taxonomic and biostratigraphic analysis of upper Albian planktonic foraminifera is presented for Ocean Drilling Program sites 1050 and 1052, which were deposited at similar to 23 degrees N paleolatitude and similar to 1300 m and 300 m paleodepths, respectively, on the Blake Nose escarpmen...
Published in: | The Journal of Foraminiferal Research |
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American Physical Society
2006
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Online Access: | http://hdl.handle.net/2434/22182 https://doi.org/10.2113/36.2.166 |
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ftunivmilanoair:oai:air.unimi.it:2434/22182 2024-02-11T10:06:14+01:00 Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean) M.R. PETRIZZO B. T. HUBER M.R. Petrizzo B.T. Huber 2006 http://hdl.handle.net/2434/22182 https://doi.org/10.2113/36.2.166 eng eng American Physical Society info:eu-repo/semantics/altIdentifier/wos/WOS:000237830600006 volume:36 issue:2 firstpage:166 lastpage:190 journal:JOURNAL OF FORAMINIFERAL RESEARCH http://hdl.handle.net/2434/22182 doi:10.2113/36.2.166 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33745223485 Settore GEO/01 - Paleontologia e Paleoecologia info:eu-repo/semantics/article 2006 ftunivmilanoair https://doi.org/10.2113/36.2.166 2024-01-23T23:16:18Z A detailed taxonomic and biostratigraphic analysis of upper Albian planktonic foraminifera is presented for Ocean Drilling Program sites 1050 and 1052, which were deposited at similar to 23 degrees N paleolatitude and similar to 1300 m and 300 m paleodepths, respectively, on the Blake Nose escarpment (subtropical western North Atlantic Ocean). The generally excellent preservation of the material, especially in the clay-rich layers, permits recognition of new bioevents within the uppermost Albian, in addition to most of the standard bioevents that have been previously defined in the Tethyan Realm. The taxonomic assignments and the stratigraphic range of some species that are often overlooked or misidentified in the stratigraphic record have also been clarified, and three species are formally described as new (Hedbergella astrepta, H. praelibyca and H. blakensis). Graphic correlation and age-depth curves constructed from integrated planktonic foraminifera and calcareous nannofossils datum events enable reliable estimation of the relative timing of species first and last occurrences and relative abundance variations, as well as determination of the timing and extent of an unconformity at Site 1050. While most of the species datum events are well correlated, several are found to be diachronous and/or unreliable probably as a result of different surface water conditions along the depth transect. Article in Journal/Newspaper North Atlantic Planktonic foraminifera The University of Milan: Archivio Istituzionale della Ricerca (AIR) The Journal of Foraminiferal Research 36 2 166 190 |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
Settore GEO/01 - Paleontologia e Paleoecologia |
spellingShingle |
Settore GEO/01 - Paleontologia e Paleoecologia M.R. PETRIZZO B. T. HUBER Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean) |
topic_facet |
Settore GEO/01 - Paleontologia e Paleoecologia |
description |
A detailed taxonomic and biostratigraphic analysis of upper Albian planktonic foraminifera is presented for Ocean Drilling Program sites 1050 and 1052, which were deposited at similar to 23 degrees N paleolatitude and similar to 1300 m and 300 m paleodepths, respectively, on the Blake Nose escarpment (subtropical western North Atlantic Ocean). The generally excellent preservation of the material, especially in the clay-rich layers, permits recognition of new bioevents within the uppermost Albian, in addition to most of the standard bioevents that have been previously defined in the Tethyan Realm. The taxonomic assignments and the stratigraphic range of some species that are often overlooked or misidentified in the stratigraphic record have also been clarified, and three species are formally described as new (Hedbergella astrepta, H. praelibyca and H. blakensis). Graphic correlation and age-depth curves constructed from integrated planktonic foraminifera and calcareous nannofossils datum events enable reliable estimation of the relative timing of species first and last occurrences and relative abundance variations, as well as determination of the timing and extent of an unconformity at Site 1050. While most of the species datum events are well correlated, several are found to be diachronous and/or unreliable probably as a result of different surface water conditions along the depth transect. |
author2 |
M.R. Petrizzo B.T. Huber |
format |
Article in Journal/Newspaper |
author |
M.R. PETRIZZO B. T. HUBER |
author_facet |
M.R. PETRIZZO B. T. HUBER |
author_sort |
M.R. PETRIZZO |
title |
Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean) |
title_short |
Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean) |
title_full |
Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean) |
title_fullStr |
Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean) |
title_full_unstemmed |
Biostratigraphy and taxonomy of late Albian planktonic foraminifera from ODP Leg 171B (western North Atlantic Ocean) |
title_sort |
biostratigraphy and taxonomy of late albian planktonic foraminifera from odp leg 171b (western north atlantic ocean) |
publisher |
American Physical Society |
publishDate |
2006 |
url |
http://hdl.handle.net/2434/22182 https://doi.org/10.2113/36.2.166 |
genre |
North Atlantic Planktonic foraminifera |
genre_facet |
North Atlantic Planktonic foraminifera |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000237830600006 volume:36 issue:2 firstpage:166 lastpage:190 journal:JOURNAL OF FORAMINIFERAL RESEARCH http://hdl.handle.net/2434/22182 doi:10.2113/36.2.166 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-33745223485 |
op_doi |
https://doi.org/10.2113/36.2.166 |
container_title |
The Journal of Foraminiferal Research |
container_volume |
36 |
container_issue |
2 |
container_start_page |
166 |
op_container_end_page |
190 |
_version_ |
1790603825669734400 |