Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite

A deep-sea temperature record for the past 50 million years has been produced from the magnesium/calcium ratio (Mg/Ca) in benthic foraminiferal calcite. The record is strikingly similar in form to the corresponding benthic oxygen isotope (δ18O) record and defines an overall cooling of about 12°C in...

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Published in:Science
Main Authors: Lear, Caroline Helen, Elderfield, H., Wilson, P. A.
Format: Article in Journal/Newspaper
Language:unknown
Published: AAAS 2000
Subjects:
GC Oceanography
QE Geology
Antarctic
Antarc*
Online Access:https://orca.cardiff.ac.uk/id/eprint/11566/
https://doi.org/10.1126/science.287.5451.269
id ftunivcardiff:oai:https://orca.cardiff.ac.uk:11566
record_format openpolar
spelling ftunivcardiff:oai:https://orca.cardiff.ac.uk:11566 2023-05-15T13:39:53+02:00 Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite Lear, Caroline Helen Elderfield, H. Wilson, P. A. 2000 https://orca.cardiff.ac.uk/id/eprint/11566/ https://doi.org/10.1126/science.287.5451.269 unknown AAAS Lear, Caroline Helen https://orca.cardiff.ac.uk/view/cardiffauthors/A048848V.html orcid:0000-0002-7533-4430 orcid:0000-0002-7533-4430, Elderfield, H. and Wilson, P. A. 2000. Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite. Science 287 (5451) , pp. 269-272. 10.1126/science.287.5451.269 https://doi.org/10.1126/science.287.5451.269 doi:10.1126/science.287.5451.269 GC Oceanography QE Geology Article PeerReviewed 2000 ftunivcardiff https://doi.org/10.1126/science.287.5451.269 2022-10-20T22:34:39Z A deep-sea temperature record for the past 50 million years has been produced from the magnesium/calcium ratio (Mg/Ca) in benthic foraminiferal calcite. The record is strikingly similar in form to the corresponding benthic oxygen isotope (δ18O) record and defines an overall cooling of about 12°C in the deep oceans with four main cooling periods. Used in conjunction with the benthic δ18O record, the magnesium temperature record indicates that the first major accumulation of Antarctic ice occurred rapidly in the earliest Oligocene (34 million years ago) and was not accompanied by a decrease in deep-sea temperatures. Article in Journal/Newspaper Antarc* Antarctic Cardiff University: ORCA (Online Research @ Cardiff) Antarctic Science 287 5451 269 272
institution Open Polar
collection Cardiff University: ORCA (Online Research @ Cardiff)
op_collection_id ftunivcardiff
language unknown
topic GC Oceanography
QE Geology
spellingShingle GC Oceanography
QE Geology
Lear, Caroline Helen
Elderfield, H.
Wilson, P. A.
Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite
topic_facet GC Oceanography
QE Geology
description A deep-sea temperature record for the past 50 million years has been produced from the magnesium/calcium ratio (Mg/Ca) in benthic foraminiferal calcite. The record is strikingly similar in form to the corresponding benthic oxygen isotope (δ18O) record and defines an overall cooling of about 12°C in the deep oceans with four main cooling periods. Used in conjunction with the benthic δ18O record, the magnesium temperature record indicates that the first major accumulation of Antarctic ice occurred rapidly in the earliest Oligocene (34 million years ago) and was not accompanied by a decrease in deep-sea temperatures.
format Article in Journal/Newspaper
author Lear, Caroline Helen
Elderfield, H.
Wilson, P. A.
author_facet Lear, Caroline Helen
Elderfield, H.
Wilson, P. A.
author_sort Lear, Caroline Helen
title Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite
title_short Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite
title_full Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite
title_fullStr Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite
title_full_unstemmed Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite
title_sort cenozoic deep-sea temperatures and global ice volumes from mg/ca in benthic foraminiferal calcite
publisher AAAS
publishDate 2000
url https://orca.cardiff.ac.uk/id/eprint/11566/
https://doi.org/10.1126/science.287.5451.269
geographic Antarctic
geographic_facet Antarctic
genre Antarc*
Antarctic
genre_facet Antarc*
Antarctic
op_relation Lear, Caroline Helen https://orca.cardiff.ac.uk/view/cardiffauthors/A048848V.html orcid:0000-0002-7533-4430 orcid:0000-0002-7533-4430, Elderfield, H. and Wilson, P. A. 2000. Cenozoic Deep-Sea Temperatures and Global Ice Volumes from Mg/Ca in Benthic Foraminiferal Calcite. Science 287 (5451) , pp. 269-272. 10.1126/science.287.5451.269 https://doi.org/10.1126/science.287.5451.269
doi:10.1126/science.287.5451.269
op_doi https://doi.org/10.1126/science.287.5451.269
container_title Science
container_volume 287
container_issue 5451
container_start_page 269
op_container_end_page 272
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