Benthic foraminifera of the Baffin Bay and Labrador Sea
Benthic foraminifers were examined from Neogene sediments of Ocean Drilling Program (ODP) Sites 645, 646, and 647 to determine their biostratigraphy and to place constraints on the paleoceanographic history of Baffin Bay, Eirik Ridge, and the Gloria Drift. At Site 645 in Baffin Bay, a Pleistocene St...
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1989
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.743960 2024-09-15T17:56:54+00:00 Benthic foraminifera of the Baffin Bay and Labrador Sea Kaminski, Michael Anthony Gradstein, Felix M Scott, David B Mackinnon, K D MEDIAN LATITUDE: 59.683280 * MEDIAN LONGITUDE: -51.004720 * SOUTH-BOUND LATITUDE: 53.331300 * WEST-BOUND LONGITUDE: -64.654300 * NORTH-BOUND LATITUDE: 70.457200 * EAST-BOUND LONGITUDE: -45.262000 * DATE/TIME START: 1985-09-05T13:25:00 * DATE/TIME END: 1985-10-25T06:15:00 1989 application/zip, 5 datasets https://doi.pangaea.de/10.1594/PANGAEA.743960 https://doi.org/10.1594/PANGAEA.743960 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.743960 https://doi.org/10.1594/PANGAEA.743960 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Kaminski, Michael Anthony; Gradstein, Felix M; Scott, David B; Mackinnon, K D (1989): Neogene benthic foraminifer biostratigraphy and deep-water history of sites 645,646, and 647, Baffin Bay and Labrador Sea. In: Srivastava, SP; Arthur, M; Clement, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 105, 731-756, https://doi.org/10.2973/odp.proc.sr.105.123.1989 105-645B 105-646A 105-646B 105-647B Baffin Bay DRILL Drilling/drill rig Joides Resolution Labrador Sea Leg105 North Atlantic Ocean Ocean Drilling Program ODP dataset publication series 1989 ftpangaea https://doi.org/10.1594/PANGAEA.74396010.2973/odp.proc.sr.105.123.1989 2024-08-21T00:02:25Z Benthic foraminifers were examined from Neogene sediments of Ocean Drilling Program (ODP) Sites 645, 646, and 647 to determine their biostratigraphy and to place constraints on the paleoceanographic history of Baffin Bay, Eirik Ridge, and the Gloria Drift. At Site 645 in Baffin Bay, a Pleistocene Stetsonia assemblage is similar to the modern Baffin Bay assemblage, but an underlying Epistominella takayanagii assemblage has no modern analog. Miocene assemblages below a barren interval display low diversity and consist mainly of agglutinated species. At Site 646 in the Labrador Sea, benthic faunal turnovers occur near important seismic horizons. A Miocene Nuttallides umbonifera assemblage similar to assemblages at other North Atlantic sites occurs below reflector R3. Above reflector R3, a coarse agglutinated assemblage containing more diversified calcareous benthic foraminifers was found that displays affinity to assemblages in the Norwegian-Greenland Sea. The faunal turnover near reflector R3 was interpreted as reflecting the onset (or renewal) of significant Denmark Straits Overflow Water at Site 646 at ~7.5 Ma, Agglutinated species disappear between reflector R2 and the base of the sediment drift, indicating a change in deep-water properties that occurred at ~ 4.7 Ma. This turnover ultimately may be linked to the reopening of the Mediterranean. The beginning of drift sedimentation at the Eirik Ridge is dated at --4.5 Ma. Drift formation ceased at ~2.5 Ma, concomitant with the appearance of ice-rafted sediments. Pleistocene assemblages containing Stetsonia horvathi display affinity to deep assemblages in high-latitude ocean basins. Upper Pliocene and Pleistocene benthic assemblages at Site 647 contain N. umbonifera, which indicates a continued influence of corrosive deep water at the Gloria Drift. Other/Unknown Material Baffin Bay Baffin Bay Baffin Greenland Greenland Sea Labrador Sea North Atlantic PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-64.654300,-45.262000,70.457200,53.331300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
105-645B 105-646A 105-646B 105-647B Baffin Bay DRILL Drilling/drill rig Joides Resolution Labrador Sea Leg105 North Atlantic Ocean Ocean Drilling Program ODP |
spellingShingle |
105-645B 105-646A 105-646B 105-647B Baffin Bay DRILL Drilling/drill rig Joides Resolution Labrador Sea Leg105 North Atlantic Ocean Ocean Drilling Program ODP Kaminski, Michael Anthony Gradstein, Felix M Scott, David B Mackinnon, K D Benthic foraminifera of the Baffin Bay and Labrador Sea |
topic_facet |
105-645B 105-646A 105-646B 105-647B Baffin Bay DRILL Drilling/drill rig Joides Resolution Labrador Sea Leg105 North Atlantic Ocean Ocean Drilling Program ODP |
description |
Benthic foraminifers were examined from Neogene sediments of Ocean Drilling Program (ODP) Sites 645, 646, and 647 to determine their biostratigraphy and to place constraints on the paleoceanographic history of Baffin Bay, Eirik Ridge, and the Gloria Drift. At Site 645 in Baffin Bay, a Pleistocene Stetsonia assemblage is similar to the modern Baffin Bay assemblage, but an underlying Epistominella takayanagii assemblage has no modern analog. Miocene assemblages below a barren interval display low diversity and consist mainly of agglutinated species. At Site 646 in the Labrador Sea, benthic faunal turnovers occur near important seismic horizons. A Miocene Nuttallides umbonifera assemblage similar to assemblages at other North Atlantic sites occurs below reflector R3. Above reflector R3, a coarse agglutinated assemblage containing more diversified calcareous benthic foraminifers was found that displays affinity to assemblages in the Norwegian-Greenland Sea. The faunal turnover near reflector R3 was interpreted as reflecting the onset (or renewal) of significant Denmark Straits Overflow Water at Site 646 at ~7.5 Ma, Agglutinated species disappear between reflector R2 and the base of the sediment drift, indicating a change in deep-water properties that occurred at ~ 4.7 Ma. This turnover ultimately may be linked to the reopening of the Mediterranean. The beginning of drift sedimentation at the Eirik Ridge is dated at --4.5 Ma. Drift formation ceased at ~2.5 Ma, concomitant with the appearance of ice-rafted sediments. Pleistocene assemblages containing Stetsonia horvathi display affinity to deep assemblages in high-latitude ocean basins. Upper Pliocene and Pleistocene benthic assemblages at Site 647 contain N. umbonifera, which indicates a continued influence of corrosive deep water at the Gloria Drift. |
format |
Other/Unknown Material |
author |
Kaminski, Michael Anthony Gradstein, Felix M Scott, David B Mackinnon, K D |
author_facet |
Kaminski, Michael Anthony Gradstein, Felix M Scott, David B Mackinnon, K D |
author_sort |
Kaminski, Michael Anthony |
title |
Benthic foraminifera of the Baffin Bay and Labrador Sea |
title_short |
Benthic foraminifera of the Baffin Bay and Labrador Sea |
title_full |
Benthic foraminifera of the Baffin Bay and Labrador Sea |
title_fullStr |
Benthic foraminifera of the Baffin Bay and Labrador Sea |
title_full_unstemmed |
Benthic foraminifera of the Baffin Bay and Labrador Sea |
title_sort |
benthic foraminifera of the baffin bay and labrador sea |
publisher |
PANGAEA |
publishDate |
1989 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.743960 https://doi.org/10.1594/PANGAEA.743960 |
op_coverage |
MEDIAN LATITUDE: 59.683280 * MEDIAN LONGITUDE: -51.004720 * SOUTH-BOUND LATITUDE: 53.331300 * WEST-BOUND LONGITUDE: -64.654300 * NORTH-BOUND LATITUDE: 70.457200 * EAST-BOUND LONGITUDE: -45.262000 * DATE/TIME START: 1985-09-05T13:25:00 * DATE/TIME END: 1985-10-25T06:15:00 |
long_lat |
ENVELOPE(-64.654300,-45.262000,70.457200,53.331300) |
genre |
Baffin Bay Baffin Bay Baffin Greenland Greenland Sea Labrador Sea North Atlantic |
genre_facet |
Baffin Bay Baffin Bay Baffin Greenland Greenland Sea Labrador Sea North Atlantic |
op_source |
Supplement to: Kaminski, Michael Anthony; Gradstein, Felix M; Scott, David B; Mackinnon, K D (1989): Neogene benthic foraminifer biostratigraphy and deep-water history of sites 645,646, and 647, Baffin Bay and Labrador Sea. In: Srivastava, SP; Arthur, M; Clement, B; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 105, 731-756, https://doi.org/10.2973/odp.proc.sr.105.123.1989 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.743960 https://doi.org/10.1594/PANGAEA.743960 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.74396010.2973/odp.proc.sr.105.123.1989 |
_version_ |
1810433081734070272 |