Stable carbon and oxygen isotope records of Cibicidoides wuellerstorfi in DSDP and ODP sites in the Atlantic and Pacific Ocean
Carbon isotopic records from benthic foraminifera are used to map patterns of deep ocean circulation between 3 and 2 million years ago, the interval when significant northern hemisphere glaciation began. The delta18O and delta13C data from four Atlantic sites (552, 607, 610, and 704) and one Pacific...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.701317 2024-09-15T18:19:00+00:00 Stable carbon and oxygen isotope records of Cibicidoides wuellerstorfi in DSDP and ODP sites in the Atlantic and Pacific Ocean Raymo, Maureen E Hodell, David A Jansen, Eystein MEDIAN LATITUDE: 20.917740 * MEDIAN LONGITUDE: -30.278320 * SOUTH-BOUND LATITUDE: -46.879000 * WEST-BOUND LONGITUDE: -83.737000 * NORTH-BOUND LATITUDE: 56.042700 * EAST-BOUND LONGITUDE: 7.420800 * DATE/TIME START: 1981-07-31T00:00:00 * DATE/TIME END: 1987-04-26T06:54:00 1992 application/zip, 10 datasets https://doi.pangaea.de/10.1594/PANGAEA.701317 https://doi.org/10.1594/PANGAEA.701317 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.701317 https://doi.org/10.1594/PANGAEA.701317 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Raymo, Maureen E; Hodell, David A; Jansen, Eystein (1992): Response of deep ocean circulation to initiation of Northern Hemisphere glaciation (3-2 MA). Paleoceanography, 7(5), 645-672, https://doi.org/10.1029/92PA01609 111-677A 114-704A 81-552A 94-607 94-610A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg111 Leg114 Leg81 Leg94 North Atlantic/FLANK North Atlantic/PLATEAU North Atlantic/RIDGE North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean dataset publication series 1992 ftpangaea https://doi.org/10.1594/PANGAEA.70131710.1029/92PA01609 2024-07-24T02:31:42Z Carbon isotopic records from benthic foraminifera are used to map patterns of deep ocean circulation between 3 and 2 million years ago, the interval when significant northern hemisphere glaciation began. The delta18O and delta13C data from four Atlantic sites (552, 607, 610, and 704) and one Pacific site (677) show that global cooling over this interval was associated with increased suppression of North Atlantic Deep Water (NADW) formation. However, the relative strength of NADW production was always greater than is observed during late Pleistocene glaciations when extreme decreases in NADW are observed in the deep North Atlantic. Our data indicate that an increase in the equator-to-pole temperature gradient associated with the onset of northern hemisphere glaciation did not intensify deepwater production in the North Atlantic but rather the opposite occurred. This is not unexpected as it is the "warm high-salinity" characteristic, rather than the "low temperature", of thermocline waters that is critical to the deepwater formation process in this region today. Other/Unknown Material NADW North Atlantic Deep Water North Atlantic South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-83.737000,7.420800,56.042700,-46.879000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
111-677A 114-704A 81-552A 94-607 94-610A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg111 Leg114 Leg81 Leg94 North Atlantic/FLANK North Atlantic/PLATEAU North Atlantic/RIDGE North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean |
spellingShingle |
111-677A 114-704A 81-552A 94-607 94-610A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg111 Leg114 Leg81 Leg94 North Atlantic/FLANK North Atlantic/PLATEAU North Atlantic/RIDGE North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean Raymo, Maureen E Hodell, David A Jansen, Eystein Stable carbon and oxygen isotope records of Cibicidoides wuellerstorfi in DSDP and ODP sites in the Atlantic and Pacific Ocean |
topic_facet |
111-677A 114-704A 81-552A 94-607 94-610A Deep Sea Drilling Project DRILL Drilling/drill rig DSDP Glomar Challenger Joides Resolution Leg111 Leg114 Leg81 Leg94 North Atlantic/FLANK North Atlantic/PLATEAU North Atlantic/RIDGE North Pacific Ocean Ocean Drilling Program ODP South Atlantic Ocean |
description |
Carbon isotopic records from benthic foraminifera are used to map patterns of deep ocean circulation between 3 and 2 million years ago, the interval when significant northern hemisphere glaciation began. The delta18O and delta13C data from four Atlantic sites (552, 607, 610, and 704) and one Pacific site (677) show that global cooling over this interval was associated with increased suppression of North Atlantic Deep Water (NADW) formation. However, the relative strength of NADW production was always greater than is observed during late Pleistocene glaciations when extreme decreases in NADW are observed in the deep North Atlantic. Our data indicate that an increase in the equator-to-pole temperature gradient associated with the onset of northern hemisphere glaciation did not intensify deepwater production in the North Atlantic but rather the opposite occurred. This is not unexpected as it is the "warm high-salinity" characteristic, rather than the "low temperature", of thermocline waters that is critical to the deepwater formation process in this region today. |
format |
Other/Unknown Material |
author |
Raymo, Maureen E Hodell, David A Jansen, Eystein |
author_facet |
Raymo, Maureen E Hodell, David A Jansen, Eystein |
author_sort |
Raymo, Maureen E |
title |
Stable carbon and oxygen isotope records of Cibicidoides wuellerstorfi in DSDP and ODP sites in the Atlantic and Pacific Ocean |
title_short |
Stable carbon and oxygen isotope records of Cibicidoides wuellerstorfi in DSDP and ODP sites in the Atlantic and Pacific Ocean |
title_full |
Stable carbon and oxygen isotope records of Cibicidoides wuellerstorfi in DSDP and ODP sites in the Atlantic and Pacific Ocean |
title_fullStr |
Stable carbon and oxygen isotope records of Cibicidoides wuellerstorfi in DSDP and ODP sites in the Atlantic and Pacific Ocean |
title_full_unstemmed |
Stable carbon and oxygen isotope records of Cibicidoides wuellerstorfi in DSDP and ODP sites in the Atlantic and Pacific Ocean |
title_sort |
stable carbon and oxygen isotope records of cibicidoides wuellerstorfi in dsdp and odp sites in the atlantic and pacific ocean |
publisher |
PANGAEA |
publishDate |
1992 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.701317 https://doi.org/10.1594/PANGAEA.701317 |
op_coverage |
MEDIAN LATITUDE: 20.917740 * MEDIAN LONGITUDE: -30.278320 * SOUTH-BOUND LATITUDE: -46.879000 * WEST-BOUND LONGITUDE: -83.737000 * NORTH-BOUND LATITUDE: 56.042700 * EAST-BOUND LONGITUDE: 7.420800 * DATE/TIME START: 1981-07-31T00:00:00 * DATE/TIME END: 1987-04-26T06:54:00 |
long_lat |
ENVELOPE(-83.737000,7.420800,56.042700,-46.879000) |
genre |
NADW North Atlantic Deep Water North Atlantic South Atlantic Ocean |
genre_facet |
NADW North Atlantic Deep Water North Atlantic South Atlantic Ocean |
op_source |
Supplement to: Raymo, Maureen E; Hodell, David A; Jansen, Eystein (1992): Response of deep ocean circulation to initiation of Northern Hemisphere glaciation (3-2 MA). Paleoceanography, 7(5), 645-672, https://doi.org/10.1029/92PA01609 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.701317 https://doi.org/10.1594/PANGAEA.701317 |
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.70131710.1029/92PA01609 |
_version_ |
1810457104917463040 |