Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions
Earth has undergone profound changes since the late Pliocene, which led to the development [~2.7 million years ago (Ma)] and intensification (~0.9 Ma) of large-scale Northern Hemisphere ice sheets, recorded as transitions in the benthic foraminiferal oxygen isotope (δ18Ob) record. Here we present an...
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American Association for the Advancement of Science
2009
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Online Access: | https://orca.cardiff.ac.uk/id/eprint/9613/ https://doi.org/10.1126/science.1169938 |
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ftunivcardiff:oai:https://orca.cardiff.ac.uk:9613 2023-05-15T16:40:48+02:00 Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions Sosdian, Sindia Rosenthal, Yair 2009-07 https://orca.cardiff.ac.uk/id/eprint/9613/ https://doi.org/10.1126/science.1169938 unknown American Association for the Advancement of Science Sosdian, Sindia https://orca.cardiff.ac.uk/view/cardiffauthors/A185665E.html orcid:0000-0002-4599-5529 orcid:0000-0002-4599-5529 and Rosenthal, Yair 2009. Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions. Science 325 (5938) , pp. 306-310. 10.1126/science.1169938 https://doi.org/10.1126/science.1169938 doi:10.1126/science.1169938 QE Geology Article PeerReviewed 2009 ftunivcardiff https://doi.org/10.1126/science.1169938 2022-10-20T22:34:04Z Earth has undergone profound changes since the late Pliocene, which led to the development [~2.7 million years ago (Ma)] and intensification (~0.9 Ma) of large-scale Northern Hemisphere ice sheets, recorded as transitions in the benthic foraminiferal oxygen isotope (δ18Ob) record. Here we present an orbitally resolved record of deep ocean temperature derived from benthic foraminiferal magnesium/calcium ratios from the North Atlantic, which shows that temperature variations are a substantial portion of the global δ18Ob signal. The record shows two distinct cooling events associated with the late Pliocene (LPT, 2.5 to 3 Ma) and mid-Pleistocene (MPT, 1.2 to 0.85 Ma) climate transitions. Whereas the LPT increase in ice volume is attributed directly to global cooling, the shift to 100,000-year cycles at the MPT is more likely to be a response to an additional change in ice-sheet dynamics. Article in Journal/Newspaper Ice Sheet North Atlantic Cardiff University: ORCA (Online Research @ Cardiff) Science 325 5938 306 310 |
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Open Polar |
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Cardiff University: ORCA (Online Research @ Cardiff) |
op_collection_id |
ftunivcardiff |
language |
unknown |
topic |
QE Geology |
spellingShingle |
QE Geology Sosdian, Sindia Rosenthal, Yair Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions |
topic_facet |
QE Geology |
description |
Earth has undergone profound changes since the late Pliocene, which led to the development [~2.7 million years ago (Ma)] and intensification (~0.9 Ma) of large-scale Northern Hemisphere ice sheets, recorded as transitions in the benthic foraminiferal oxygen isotope (δ18Ob) record. Here we present an orbitally resolved record of deep ocean temperature derived from benthic foraminiferal magnesium/calcium ratios from the North Atlantic, which shows that temperature variations are a substantial portion of the global δ18Ob signal. The record shows two distinct cooling events associated with the late Pliocene (LPT, 2.5 to 3 Ma) and mid-Pleistocene (MPT, 1.2 to 0.85 Ma) climate transitions. Whereas the LPT increase in ice volume is attributed directly to global cooling, the shift to 100,000-year cycles at the MPT is more likely to be a response to an additional change in ice-sheet dynamics. |
format |
Article in Journal/Newspaper |
author |
Sosdian, Sindia Rosenthal, Yair |
author_facet |
Sosdian, Sindia Rosenthal, Yair |
author_sort |
Sosdian, Sindia |
title |
Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions |
title_short |
Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions |
title_full |
Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions |
title_fullStr |
Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions |
title_full_unstemmed |
Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions |
title_sort |
deep-sea temperature and ice volume changes across the pliocene-pleistocene climate transitions |
publisher |
American Association for the Advancement of Science |
publishDate |
2009 |
url |
https://orca.cardiff.ac.uk/id/eprint/9613/ https://doi.org/10.1126/science.1169938 |
genre |
Ice Sheet North Atlantic |
genre_facet |
Ice Sheet North Atlantic |
op_relation |
Sosdian, Sindia https://orca.cardiff.ac.uk/view/cardiffauthors/A185665E.html orcid:0000-0002-4599-5529 orcid:0000-0002-4599-5529 and Rosenthal, Yair 2009. Deep-sea temperature and ice volume changes across the Pliocene-Pleistocene climate transitions. Science 325 (5938) , pp. 306-310. 10.1126/science.1169938 https://doi.org/10.1126/science.1169938 doi:10.1126/science.1169938 |
op_doi |
https://doi.org/10.1126/science.1169938 |
container_title |
Science |
container_volume |
325 |
container_issue |
5938 |
container_start_page |
306 |
op_container_end_page |
310 |
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1766031230893031424 |