Deglaciation, basin formation and post-glacial climate change from a regional network of sediment core sites in Ohio and eastern Indiana
Abstract Many paleoclimate and landscape change studies in the American Midwest have focused on the Late Glacial and early Holocene time periods (~ 16–11 ka), but little work has addressed landscape change in this area between the Last Glacial Maximum and the Late Glacial (~ 22–16 ka). Sediment core...
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Cambridge University Press (CUP)
2011
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crcambridgeupr:10.1016/j.yqres.2011.06.004 2024-09-30T14:35:50+00:00 Deglaciation, basin formation and post-glacial climate change from a regional network of sediment core sites in Ohio and eastern Indiana Glover, Katherine C. Lowell, Thomas V. Wiles, Gregory C. Pair, Donald Applegate, Patrick Hajdas, Irena 2011 http://dx.doi.org/10.1016/j.yqres.2011.06.004 http://api.elsevier.com/content/article/PII:S0033589411000809?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589411000809?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400008012 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 76, issue 3, page 401-410 ISSN 0033-5894 1096-0287 journal-article 2011 crcambridgeupr https://doi.org/10.1016/j.yqres.2011.06.004 2024-09-11T04:04:15Z Abstract Many paleoclimate and landscape change studies in the American Midwest have focused on the Late Glacial and early Holocene time periods (~ 16–11 ka), but little work has addressed landscape change in this area between the Last Glacial Maximum and the Late Glacial (~ 22–16 ka). Sediment cores were collected from 29 new lake and bog sites in Ohio and Indiana to address this gap. The basal radiocarbon dates from these cores show that initial ice retreat from the maximal last-glacial ice extent occurred by 22 ka, and numerous sites that are ~ 100 km inside this limit were exposed by 18.9 ka. Post-glacial environmental changes were identified as stratigraphic or biologic changes in select cores. The strongest signal occurs between 18.5 and 14.6 ka. These Midwestern events correspond with evidence to the northeast, suggesting that initial deglaciation of the ice sheet, and ensuing environmental changes, were episodic and rapid. Significantly, these changes predate the onset of the Bølling postglacial warming (14.8 ka) as recorded by the Greenland ice cores. Thus, deglaciation and landscape change around the southern margins of the Laurentide Ice Sheet happened ~ 7 ka before postglacial changes were felt in central Greenland. Article in Journal/Newspaper Greenland Greenland ice cores Ice Sheet Cambridge University Press Greenland New Lake ENVELOPE(-109.468,-109.468,62.684,62.684) Quaternary Research 76 3 401 410 |
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Open Polar |
collection |
Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Many paleoclimate and landscape change studies in the American Midwest have focused on the Late Glacial and early Holocene time periods (~ 16–11 ka), but little work has addressed landscape change in this area between the Last Glacial Maximum and the Late Glacial (~ 22–16 ka). Sediment cores were collected from 29 new lake and bog sites in Ohio and Indiana to address this gap. The basal radiocarbon dates from these cores show that initial ice retreat from the maximal last-glacial ice extent occurred by 22 ka, and numerous sites that are ~ 100 km inside this limit were exposed by 18.9 ka. Post-glacial environmental changes were identified as stratigraphic or biologic changes in select cores. The strongest signal occurs between 18.5 and 14.6 ka. These Midwestern events correspond with evidence to the northeast, suggesting that initial deglaciation of the ice sheet, and ensuing environmental changes, were episodic and rapid. Significantly, these changes predate the onset of the Bølling postglacial warming (14.8 ka) as recorded by the Greenland ice cores. Thus, deglaciation and landscape change around the southern margins of the Laurentide Ice Sheet happened ~ 7 ka before postglacial changes were felt in central Greenland. |
format |
Article in Journal/Newspaper |
author |
Glover, Katherine C. Lowell, Thomas V. Wiles, Gregory C. Pair, Donald Applegate, Patrick Hajdas, Irena |
spellingShingle |
Glover, Katherine C. Lowell, Thomas V. Wiles, Gregory C. Pair, Donald Applegate, Patrick Hajdas, Irena Deglaciation, basin formation and post-glacial climate change from a regional network of sediment core sites in Ohio and eastern Indiana |
author_facet |
Glover, Katherine C. Lowell, Thomas V. Wiles, Gregory C. Pair, Donald Applegate, Patrick Hajdas, Irena |
author_sort |
Glover, Katherine C. |
title |
Deglaciation, basin formation and post-glacial climate change from a regional network of sediment core sites in Ohio and eastern Indiana |
title_short |
Deglaciation, basin formation and post-glacial climate change from a regional network of sediment core sites in Ohio and eastern Indiana |
title_full |
Deglaciation, basin formation and post-glacial climate change from a regional network of sediment core sites in Ohio and eastern Indiana |
title_fullStr |
Deglaciation, basin formation and post-glacial climate change from a regional network of sediment core sites in Ohio and eastern Indiana |
title_full_unstemmed |
Deglaciation, basin formation and post-glacial climate change from a regional network of sediment core sites in Ohio and eastern Indiana |
title_sort |
deglaciation, basin formation and post-glacial climate change from a regional network of sediment core sites in ohio and eastern indiana |
publisher |
Cambridge University Press (CUP) |
publishDate |
2011 |
url |
http://dx.doi.org/10.1016/j.yqres.2011.06.004 http://api.elsevier.com/content/article/PII:S0033589411000809?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589411000809?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400008012 |
long_lat |
ENVELOPE(-109.468,-109.468,62.684,62.684) |
geographic |
Greenland New Lake |
geographic_facet |
Greenland New Lake |
genre |
Greenland Greenland ice cores Ice Sheet |
genre_facet |
Greenland Greenland ice cores Ice Sheet |
op_source |
Quaternary Research volume 76, issue 3, page 401-410 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/j.yqres.2011.06.004 |
container_title |
Quaternary Research |
container_volume |
76 |
container_issue |
3 |
container_start_page |
401 |
op_container_end_page |
410 |
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1811639059182780416 |