A near-field sea level record of East Antarctic Ice Sheet instability from 32 to 27 Myr
[1] Fossil, facies, and isotope analyses of an early high-paleolatitude (55°S) section suggests a highly unstable East Antarctic Ice Sheet from 32 to 27 Myr. The waxing and waning of this ice sheet from 140% to 40% of its present volume caused sea level changes of +25 m (ranging from -30 to +50 m) r...
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ftucl:oai:eprints.ucl.ac.uk.OAI2:1400904 2023-12-24T10:08:51+01:00 A near-field sea level record of East Antarctic Ice Sheet instability from 32 to 27 Myr Gallagher, SJ Villa, G Drysdale, RN Wade, BS Scher, H Li, Q Wallace, MW Holdgate, GR 2013-03 text https://discovery.ucl.ac.uk/id/eprint/1400904/1/Wade_Gallagher%20et%20al%202013.pdf https://discovery.ucl.ac.uk/id/eprint/1400904/ eng eng AMER GEOPHYSICAL UNION https://discovery.ucl.ac.uk/id/eprint/1400904/1/Wade_Gallagher%20et%20al%202013.pdf https://discovery.ucl.ac.uk/id/eprint/1400904/ open Paleoceanography , 28 (1) pp. 1-13. (2013) Science & Technology Physical Sciences Life Sciences & Biomedicine Geosciences Multidisciplinary Oceanography Paleontology Geology FORAMINIFERAL BIOFACIES SOUTHEASTERN AUSTRALIA NEW-JERSEY PALEOENVIRONMENTAL EVOLUTION CARBONATE SEDIMENTS SOUTH-AUSTRALIA OTWAY BASIN OLIGOCENE SHELF GIPPSLAND Article 2013 ftucl 2023-11-27T13:07:36Z [1] Fossil, facies, and isotope analyses of an early high-paleolatitude (55°S) section suggests a highly unstable East Antarctic Ice Sheet from 32 to 27 Myr. The waxing and waning of this ice sheet from 140% to 40% of its present volume caused sea level changes of +25 m (ranging from -30 to +50 m) related to periodic glacial (100,000 to 200,000 years) and shorter interglacial events. The near-field Gippsland sea level (GSL) curve shares many similarities to the far-field New Jersey sea level (NJSL) estimates. However, there are possible resolution errors due to biochronology, taphonomy, and paleodepth estimates and the relative lack of lowstand deposits (in NJSL) that prevent detailed correlations with GSL. Nevertheless, the lateral variations in sea level between the GSL section and NJSL record that suggest ocean siphoning and antisiphoning may have propagated synchronous yet variable sea levels. Article in Journal/Newspaper Antarc* Antarctic Ice Sheet University College London: UCL Discovery Antarctic East Antarctic Ice Sheet |
institution |
Open Polar |
collection |
University College London: UCL Discovery |
op_collection_id |
ftucl |
language |
English |
topic |
Science & Technology Physical Sciences Life Sciences & Biomedicine Geosciences Multidisciplinary Oceanography Paleontology Geology FORAMINIFERAL BIOFACIES SOUTHEASTERN AUSTRALIA NEW-JERSEY PALEOENVIRONMENTAL EVOLUTION CARBONATE SEDIMENTS SOUTH-AUSTRALIA OTWAY BASIN OLIGOCENE SHELF GIPPSLAND |
spellingShingle |
Science & Technology Physical Sciences Life Sciences & Biomedicine Geosciences Multidisciplinary Oceanography Paleontology Geology FORAMINIFERAL BIOFACIES SOUTHEASTERN AUSTRALIA NEW-JERSEY PALEOENVIRONMENTAL EVOLUTION CARBONATE SEDIMENTS SOUTH-AUSTRALIA OTWAY BASIN OLIGOCENE SHELF GIPPSLAND Gallagher, SJ Villa, G Drysdale, RN Wade, BS Scher, H Li, Q Wallace, MW Holdgate, GR A near-field sea level record of East Antarctic Ice Sheet instability from 32 to 27 Myr |
topic_facet |
Science & Technology Physical Sciences Life Sciences & Biomedicine Geosciences Multidisciplinary Oceanography Paleontology Geology FORAMINIFERAL BIOFACIES SOUTHEASTERN AUSTRALIA NEW-JERSEY PALEOENVIRONMENTAL EVOLUTION CARBONATE SEDIMENTS SOUTH-AUSTRALIA OTWAY BASIN OLIGOCENE SHELF GIPPSLAND |
description |
[1] Fossil, facies, and isotope analyses of an early high-paleolatitude (55°S) section suggests a highly unstable East Antarctic Ice Sheet from 32 to 27 Myr. The waxing and waning of this ice sheet from 140% to 40% of its present volume caused sea level changes of +25 m (ranging from -30 to +50 m) related to periodic glacial (100,000 to 200,000 years) and shorter interglacial events. The near-field Gippsland sea level (GSL) curve shares many similarities to the far-field New Jersey sea level (NJSL) estimates. However, there are possible resolution errors due to biochronology, taphonomy, and paleodepth estimates and the relative lack of lowstand deposits (in NJSL) that prevent detailed correlations with GSL. Nevertheless, the lateral variations in sea level between the GSL section and NJSL record that suggest ocean siphoning and antisiphoning may have propagated synchronous yet variable sea levels. |
format |
Article in Journal/Newspaper |
author |
Gallagher, SJ Villa, G Drysdale, RN Wade, BS Scher, H Li, Q Wallace, MW Holdgate, GR |
author_facet |
Gallagher, SJ Villa, G Drysdale, RN Wade, BS Scher, H Li, Q Wallace, MW Holdgate, GR |
author_sort |
Gallagher, SJ |
title |
A near-field sea level record of East Antarctic Ice Sheet instability from 32 to 27 Myr |
title_short |
A near-field sea level record of East Antarctic Ice Sheet instability from 32 to 27 Myr |
title_full |
A near-field sea level record of East Antarctic Ice Sheet instability from 32 to 27 Myr |
title_fullStr |
A near-field sea level record of East Antarctic Ice Sheet instability from 32 to 27 Myr |
title_full_unstemmed |
A near-field sea level record of East Antarctic Ice Sheet instability from 32 to 27 Myr |
title_sort |
near-field sea level record of east antarctic ice sheet instability from 32 to 27 myr |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2013 |
url |
https://discovery.ucl.ac.uk/id/eprint/1400904/1/Wade_Gallagher%20et%20al%202013.pdf https://discovery.ucl.ac.uk/id/eprint/1400904/ |
geographic |
Antarctic East Antarctic Ice Sheet |
geographic_facet |
Antarctic East Antarctic Ice Sheet |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_source |
Paleoceanography , 28 (1) pp. 1-13. (2013) |
op_relation |
https://discovery.ucl.ac.uk/id/eprint/1400904/1/Wade_Gallagher%20et%20al%202013.pdf https://discovery.ucl.ac.uk/id/eprint/1400904/ |
op_rights |
open |
_version_ |
1786204109799424000 |