(Appendix) Ostracodes at DSDP Leg 72 Holes ...
From the study of the ostracodes of Sites 516, 517, and 518 in comparison with those of Sites 21, 22, and 357, we can show that a time lag (early to late Oliogene) existed between the formation of the deep water masses (mid-bathyal ± 2000 m) and those of intermediate depths (upper bathyal ± 1000 m)....
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PANGAEA - Publishing Network for Geoscientific and Environmental Data
1983
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ftdatacite:10.15468/5dsehr 2023-12-31T10:00:30+01:00 (Appendix) Ostracodes at DSDP Leg 72 Holes ... Benson, Richard H Peypouquet, Jean Pierre 1983 https://dx.doi.org/10.15468/5dsehr https://www.gbif.org/dataset/db46287d-21b5-45eb-9428-56b32946cb32 en eng PANGAEA - Publishing Network for Geoscientific and Environmental Data https://dx.doi.org/10.1594/pangaea.811745 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 Dataset OCCURRENCE dataset 1983 ftdatacite https://doi.org/10.15468/5dsehr10.1594/pangaea.811745 2023-12-01T10:29:53Z From the study of the ostracodes of Sites 516, 517, and 518 in comparison with those of Sites 21, 22, and 357, we can show that a time lag (early to late Oliogene) existed between the formation of the deep water masses (mid-bathyal ± 2000 m) and those of intermediate depths (upper bathyal ± 1000 m). The ostracode faunas suggest that while the Antarctic Intermediate Water (O2 = 4.5 to 5 ml/l) was flowing through the Vema Trough to fill the northern basins, the returning less-dense, warmer water (O2 = 3.5 to 5 ml/l) originating in Tethys was being gradually displaced upslope. Efforts to identify shallow (less than 200 m) faunas were unsuccessful. No evidence of significant changes in paleodepth or close proximity to islands could be found that could not be better explained by water-mass changes. Studies of the genera Poseidonamicus and Krithe suggest an important water mass change at about 14 Ma (late-middle Miocene), but the cause of this event is not yet understood. ... Dataset Antarc* Antarctic DataCite Metadata Store (German National Library of Science and Technology) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
description |
From the study of the ostracodes of Sites 516, 517, and 518 in comparison with those of Sites 21, 22, and 357, we can show that a time lag (early to late Oliogene) existed between the formation of the deep water masses (mid-bathyal ± 2000 m) and those of intermediate depths (upper bathyal ± 1000 m). The ostracode faunas suggest that while the Antarctic Intermediate Water (O2 = 4.5 to 5 ml/l) was flowing through the Vema Trough to fill the northern basins, the returning less-dense, warmer water (O2 = 3.5 to 5 ml/l) originating in Tethys was being gradually displaced upslope. Efforts to identify shallow (less than 200 m) faunas were unsuccessful. No evidence of significant changes in paleodepth or close proximity to islands could be found that could not be better explained by water-mass changes. Studies of the genera Poseidonamicus and Krithe suggest an important water mass change at about 14 Ma (late-middle Miocene), but the cause of this event is not yet understood. ... |
format |
Dataset |
author |
Benson, Richard H Peypouquet, Jean Pierre |
spellingShingle |
Benson, Richard H Peypouquet, Jean Pierre (Appendix) Ostracodes at DSDP Leg 72 Holes ... |
author_facet |
Benson, Richard H Peypouquet, Jean Pierre |
author_sort |
Benson, Richard H |
title |
(Appendix) Ostracodes at DSDP Leg 72 Holes ... |
title_short |
(Appendix) Ostracodes at DSDP Leg 72 Holes ... |
title_full |
(Appendix) Ostracodes at DSDP Leg 72 Holes ... |
title_fullStr |
(Appendix) Ostracodes at DSDP Leg 72 Holes ... |
title_full_unstemmed |
(Appendix) Ostracodes at DSDP Leg 72 Holes ... |
title_sort |
(appendix) ostracodes at dsdp leg 72 holes ... |
publisher |
PANGAEA - Publishing Network for Geoscientific and Environmental Data |
publishDate |
1983 |
url |
https://dx.doi.org/10.15468/5dsehr https://www.gbif.org/dataset/db46287d-21b5-45eb-9428-56b32946cb32 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_relation |
https://dx.doi.org/10.1594/pangaea.811745 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.15468/5dsehr10.1594/pangaea.811745 |
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1786850743642226688 |