The “Missing Glaciations” of the Middle Pleistocene
Global glaciations have varied in size and magnitude since the Early-Middle Pleistocene transition (~773 ka), despite the apparent regular and high-amplitude 100 kyr pacing of glacial-interglacial cycles recorded in marine isotopic records. The evidence on land indicates that patterns of glaciation...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press
2020
|
Subjects: | |
Online Access: | https://www.repository.cam.ac.uk/handle/1810/299081 https://doi.org/10.17863/CAM.46143 |
id |
ftunivcam:oai:www.repository.cam.ac.uk:1810/299081 |
---|---|
record_format |
openpolar |
spelling |
ftunivcam:oai:www.repository.cam.ac.uk:1810/299081 2024-01-14T10:01:55+01:00 The “Missing Glaciations” of the Middle Pleistocene Gibbard, Philip Leonard Hughes, Philip Ehlers, Jürgen 2020-06 application/pdf https://www.repository.cam.ac.uk/handle/1810/299081 https://doi.org/10.17863/CAM.46143 eng eng Cambridge University Press http://dx.doi.org/10.1017/qua.2019.76 Quaternary Research https://www.repository.cam.ac.uk/handle/1810/299081 doi:10.17863/CAM.46143 All rights reserved ice ages glacial cycles orbital forcing Saalian Wolstonian Illinoian Quaternary stratigraphy Article 2020 ftunivcam https://doi.org/10.17863/CAM.46143 2023-12-21T23:25:10Z Global glaciations have varied in size and magnitude since the Early-Middle Pleistocene transition (~773 ka), despite the apparent regular and high-amplitude 100 kyr pacing of glacial-interglacial cycles recorded in marine isotopic records. The evidence on land indicates that patterns of glaciation varied dramatically between different glacial-interglacial cycles. For example, MIS (Marine Isotope Stages) 8, 10 and 14 are all noticeably absent from many terrestrial glacial records in North America and Europe. However, globally, the patterns are more complicated with major glaciations recorded in MIS 8 in Asia and in parts of the Southern Hemisphere, such as Patagonia for example. This spatial variability in glaciation between glacial-interglacial cycles is likely to be driven by ice volume changes in the West Antarctic Ice Sheet and associated interhemispheric connections through ocean-atmosphere circulatory changes. The weak global glacial imprint in some glacial-interglacial cycles is related to the pattern of global ice build-up. This is caused by feedback mechanisms within glacier systems themselves which partly result from long-term orbital changes driven by eccentricity. n/a Article in Journal/Newspaper Antarc* Antarctic Ice Sheet Apollo - University of Cambridge Repository Antarctic Patagonia West Antarctic Ice Sheet |
institution |
Open Polar |
collection |
Apollo - University of Cambridge Repository |
op_collection_id |
ftunivcam |
language |
English |
topic |
ice ages glacial cycles orbital forcing Saalian Wolstonian Illinoian Quaternary stratigraphy |
spellingShingle |
ice ages glacial cycles orbital forcing Saalian Wolstonian Illinoian Quaternary stratigraphy Gibbard, Philip Leonard Hughes, Philip Ehlers, Jürgen The “Missing Glaciations” of the Middle Pleistocene |
topic_facet |
ice ages glacial cycles orbital forcing Saalian Wolstonian Illinoian Quaternary stratigraphy |
description |
Global glaciations have varied in size and magnitude since the Early-Middle Pleistocene transition (~773 ka), despite the apparent regular and high-amplitude 100 kyr pacing of glacial-interglacial cycles recorded in marine isotopic records. The evidence on land indicates that patterns of glaciation varied dramatically between different glacial-interglacial cycles. For example, MIS (Marine Isotope Stages) 8, 10 and 14 are all noticeably absent from many terrestrial glacial records in North America and Europe. However, globally, the patterns are more complicated with major glaciations recorded in MIS 8 in Asia and in parts of the Southern Hemisphere, such as Patagonia for example. This spatial variability in glaciation between glacial-interglacial cycles is likely to be driven by ice volume changes in the West Antarctic Ice Sheet and associated interhemispheric connections through ocean-atmosphere circulatory changes. The weak global glacial imprint in some glacial-interglacial cycles is related to the pattern of global ice build-up. This is caused by feedback mechanisms within glacier systems themselves which partly result from long-term orbital changes driven by eccentricity. n/a |
format |
Article in Journal/Newspaper |
author |
Gibbard, Philip Leonard Hughes, Philip Ehlers, Jürgen |
author_facet |
Gibbard, Philip Leonard Hughes, Philip Ehlers, Jürgen |
author_sort |
Gibbard, Philip Leonard |
title |
The “Missing Glaciations” of the Middle Pleistocene |
title_short |
The “Missing Glaciations” of the Middle Pleistocene |
title_full |
The “Missing Glaciations” of the Middle Pleistocene |
title_fullStr |
The “Missing Glaciations” of the Middle Pleistocene |
title_full_unstemmed |
The “Missing Glaciations” of the Middle Pleistocene |
title_sort |
“missing glaciations” of the middle pleistocene |
publisher |
Cambridge University Press |
publishDate |
2020 |
url |
https://www.repository.cam.ac.uk/handle/1810/299081 https://doi.org/10.17863/CAM.46143 |
geographic |
Antarctic Patagonia West Antarctic Ice Sheet |
geographic_facet |
Antarctic Patagonia West Antarctic Ice Sheet |
genre |
Antarc* Antarctic Ice Sheet |
genre_facet |
Antarc* Antarctic Ice Sheet |
op_relation |
https://www.repository.cam.ac.uk/handle/1810/299081 doi:10.17863/CAM.46143 |
op_rights |
All rights reserved |
op_doi |
https://doi.org/10.17863/CAM.46143 |
_version_ |
1788056722158387200 |