Stable oxygen and carbon isotope record of benthic foraminifera in Pliocene sediments of the Californian margin, supplement to: Kwiek, P B; Ravelo, Ana Christina (1999): Pacific Ocean intermediate and deep water circulation during the Pliocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 154(3), 191-217
New benthic foraminiferal stable isotopic records of northeast Pacific intermediate water (ODP Site 1014, 1177 m) and mid-depth water (ODP Site 1018, 2476 m) were compared to isotopic records of deep water in the tropical Pacific (ODP Site 849, 3851 m) for the reconstruction of vertical profiles of...
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ftdatacite:10.1594/pangaea.704882 2023-05-15T17:13:54+02:00 Stable oxygen and carbon isotope record of benthic foraminifera in Pliocene sediments of the Californian margin, supplement to: Kwiek, P B; Ravelo, Ana Christina (1999): Pacific Ocean intermediate and deep water circulation during the Pliocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 154(3), 191-217 Kwiek, P B Ravelo, Ana Christina 1999 application/zip https://dx.doi.org/10.1594/pangaea.704882 https://doi.pangaea.de/10.1594/PANGAEA.704882 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/s0031-0182(99)00111-x Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Drilling/drill rig Leg167 Joides Resolution Ocean Drilling Program ODP Supplementary Collection of Datasets Collection article 1999 ftdatacite https://doi.org/10.1594/pangaea.704882 https://doi.org/10.1016/s0031-0182(99)00111-x 2022-02-08T16:24:46Z New benthic foraminiferal stable isotopic records of northeast Pacific intermediate water (ODP Site 1014, 1177 m) and mid-depth water (ODP Site 1018, 2476 m) were compared to isotopic records of deep water in the tropical Pacific (ODP Site 849, 3851 m) for the reconstruction of vertical profiles of nutrient and physical properties from the Early Pliocene to the Early Pleistocene (approx. 5-1.4 Ma). Our data indicate that, for the entire interval, there was enhanced north Pacific intermediate water ventilation relative to today, and a similar to modern circulation pattern with northward flowing Pacific Bottom Water (PBW) beneath its southward flowing return flow. However, the core of maximally aged return flow resided as deep as ~2500 m (as compared to ~1500 m today), probably due to the strengthened intermediate water flow. Less apparent aging of deep water along its path before 2.7 Ma indicates that thermohaline overturning may have been more rapid in the warm period of the Early Pliocene. In addition, prior to 2.7 Ma, foraminiferal oxygen isotopic values at mid-depth sites are higher than at deep sites (a reversed vertical gradient relative to today) in both the Atlantic and Pacific Oceans. We suggest that NADW was warmer and more saline than today and that it influenced mid-depth waters throughout the Atlantic and Pacific Oceans. Enhanced Pliocene formation of warmer/saltier intermediate water in the north Pacific, and deep water in the north Atlantic, may have been a result of higher than modern high/mid-latitude sea surface temperatures, evaporation, and salinity. Article in Journal/Newspaper NADW North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Pacific |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Drilling/drill rig Leg167 Joides Resolution Ocean Drilling Program ODP |
spellingShingle |
Drilling/drill rig Leg167 Joides Resolution Ocean Drilling Program ODP Kwiek, P B Ravelo, Ana Christina Stable oxygen and carbon isotope record of benthic foraminifera in Pliocene sediments of the Californian margin, supplement to: Kwiek, P B; Ravelo, Ana Christina (1999): Pacific Ocean intermediate and deep water circulation during the Pliocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 154(3), 191-217 |
topic_facet |
Drilling/drill rig Leg167 Joides Resolution Ocean Drilling Program ODP |
description |
New benthic foraminiferal stable isotopic records of northeast Pacific intermediate water (ODP Site 1014, 1177 m) and mid-depth water (ODP Site 1018, 2476 m) were compared to isotopic records of deep water in the tropical Pacific (ODP Site 849, 3851 m) for the reconstruction of vertical profiles of nutrient and physical properties from the Early Pliocene to the Early Pleistocene (approx. 5-1.4 Ma). Our data indicate that, for the entire interval, there was enhanced north Pacific intermediate water ventilation relative to today, and a similar to modern circulation pattern with northward flowing Pacific Bottom Water (PBW) beneath its southward flowing return flow. However, the core of maximally aged return flow resided as deep as ~2500 m (as compared to ~1500 m today), probably due to the strengthened intermediate water flow. Less apparent aging of deep water along its path before 2.7 Ma indicates that thermohaline overturning may have been more rapid in the warm period of the Early Pliocene. In addition, prior to 2.7 Ma, foraminiferal oxygen isotopic values at mid-depth sites are higher than at deep sites (a reversed vertical gradient relative to today) in both the Atlantic and Pacific Oceans. We suggest that NADW was warmer and more saline than today and that it influenced mid-depth waters throughout the Atlantic and Pacific Oceans. Enhanced Pliocene formation of warmer/saltier intermediate water in the north Pacific, and deep water in the north Atlantic, may have been a result of higher than modern high/mid-latitude sea surface temperatures, evaporation, and salinity. |
format |
Article in Journal/Newspaper |
author |
Kwiek, P B Ravelo, Ana Christina |
author_facet |
Kwiek, P B Ravelo, Ana Christina |
author_sort |
Kwiek, P B |
title |
Stable oxygen and carbon isotope record of benthic foraminifera in Pliocene sediments of the Californian margin, supplement to: Kwiek, P B; Ravelo, Ana Christina (1999): Pacific Ocean intermediate and deep water circulation during the Pliocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 154(3), 191-217 |
title_short |
Stable oxygen and carbon isotope record of benthic foraminifera in Pliocene sediments of the Californian margin, supplement to: Kwiek, P B; Ravelo, Ana Christina (1999): Pacific Ocean intermediate and deep water circulation during the Pliocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 154(3), 191-217 |
title_full |
Stable oxygen and carbon isotope record of benthic foraminifera in Pliocene sediments of the Californian margin, supplement to: Kwiek, P B; Ravelo, Ana Christina (1999): Pacific Ocean intermediate and deep water circulation during the Pliocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 154(3), 191-217 |
title_fullStr |
Stable oxygen and carbon isotope record of benthic foraminifera in Pliocene sediments of the Californian margin, supplement to: Kwiek, P B; Ravelo, Ana Christina (1999): Pacific Ocean intermediate and deep water circulation during the Pliocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 154(3), 191-217 |
title_full_unstemmed |
Stable oxygen and carbon isotope record of benthic foraminifera in Pliocene sediments of the Californian margin, supplement to: Kwiek, P B; Ravelo, Ana Christina (1999): Pacific Ocean intermediate and deep water circulation during the Pliocene. Palaeogeography, Palaeoclimatology, Palaeoecology, 154(3), 191-217 |
title_sort |
stable oxygen and carbon isotope record of benthic foraminifera in pliocene sediments of the californian margin, supplement to: kwiek, p b; ravelo, ana christina (1999): pacific ocean intermediate and deep water circulation during the pliocene. palaeogeography, palaeoclimatology, palaeoecology, 154(3), 191-217 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
1999 |
url |
https://dx.doi.org/10.1594/pangaea.704882 https://doi.pangaea.de/10.1594/PANGAEA.704882 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
NADW North Atlantic |
genre_facet |
NADW North Atlantic |
op_relation |
https://dx.doi.org/10.1016/s0031-0182(99)00111-x |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.704882 https://doi.org/10.1016/s0031-0182(99)00111-x |
_version_ |
1766071100763013120 |