Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A.
Prominent moraines deposited by the Laurentide Ice Sheet in northern New England document readvances, or stillstands, of the ice margin during overall deglaciation. However, until now, the paucity of direct chronologies over much of the region has precluded meaningful assessment of the mechanisms th...
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ftnuigalway:oai:https://researchrepository.universityofgalway.ie:10379/14778 2024-09-30T14:35:56+00:00 Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A. Bromley, Gordon R.M. Hall, Brenda L. Thompson, Woodrow B. Kaplan, Michael R. Garcia, Juan Luis Schaefer, Joerg M. 2018-12-27T22:15:18Z application/pdf http://hdl.handle.net/10379/14778 https://doi.org/10.13025/19904 https://doi.org/10.1016/j.yqres.2015.02.004 en eng Cambridge University Press and Elsevier Quaternary Research Bromley, Gordon R. M., Hall, Brenda L., Thompson, Woodrow B., Kaplan, Michael R., Garcia, Juan Luis, & Schaefer, Joerg M. (2015). Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A. Quaternary Research, 83(3), 522-530. doi: https://doi.org/10.1016/j.yqres.2015.02.004 1096-0287 http://hdl.handle.net/10379/14778 https://doi.org/10.13025/19904 doi:10.1016/j.yqres.2015.02.004 Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ Laurentide Ice Sheet New England Deglaciation Late glacial Allerød Readvance Article 2018 ftnuigalway https://doi.org/10.13025/1990410.1016/j.yqres.2015.02.004 2024-09-17T14:44:30Z Prominent moraines deposited by the Laurentide Ice Sheet in northern New England document readvances, or stillstands, of the ice margin during overall deglaciation. However, until now, the paucity of direct chronologies over much of the region has precluded meaningful assessment of the mechanisms that drove these events, or of the complex relationships between ice-sheet dynamics and climate. As a step towards addressing this problem, we present a cosmogenic 10Be surface-exposure chronology from the Androscoggin moraine complex, located in the White Mountains of western Maine and northern New Hampshire, as well as four recalculated ages from the nearby Littleton Bethlehem moraine. Seven internally consistent 10Be ages from the Androscoggin terminal moraines indicate that advance culminated ~ 13.2 ± 0.8 ka, in close agreement with the mean age of the neighboring Littleton Bethlehem complex. Together, these two datasets indicate stabilization or advance of the ice-sheet margin in northern New England, at ~ 14 13 ka, during the Allerød/Greenland Interstadial I. peer-reviewed Article in Journal/Newspaper Greenland Ice Sheet National University of Ireland (NUI), Galway: ARAN Greenland |
institution |
Open Polar |
collection |
National University of Ireland (NUI), Galway: ARAN |
op_collection_id |
ftnuigalway |
language |
English |
topic |
Laurentide Ice Sheet New England Deglaciation Late glacial Allerød Readvance |
spellingShingle |
Laurentide Ice Sheet New England Deglaciation Late glacial Allerød Readvance Bromley, Gordon R.M. Hall, Brenda L. Thompson, Woodrow B. Kaplan, Michael R. Garcia, Juan Luis Schaefer, Joerg M. Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A. |
topic_facet |
Laurentide Ice Sheet New England Deglaciation Late glacial Allerød Readvance |
description |
Prominent moraines deposited by the Laurentide Ice Sheet in northern New England document readvances, or stillstands, of the ice margin during overall deglaciation. However, until now, the paucity of direct chronologies over much of the region has precluded meaningful assessment of the mechanisms that drove these events, or of the complex relationships between ice-sheet dynamics and climate. As a step towards addressing this problem, we present a cosmogenic 10Be surface-exposure chronology from the Androscoggin moraine complex, located in the White Mountains of western Maine and northern New Hampshire, as well as four recalculated ages from the nearby Littleton Bethlehem moraine. Seven internally consistent 10Be ages from the Androscoggin terminal moraines indicate that advance culminated ~ 13.2 ± 0.8 ka, in close agreement with the mean age of the neighboring Littleton Bethlehem complex. Together, these two datasets indicate stabilization or advance of the ice-sheet margin in northern New England, at ~ 14 13 ka, during the Allerød/Greenland Interstadial I. peer-reviewed |
format |
Article in Journal/Newspaper |
author |
Bromley, Gordon R.M. Hall, Brenda L. Thompson, Woodrow B. Kaplan, Michael R. Garcia, Juan Luis Schaefer, Joerg M. |
author_facet |
Bromley, Gordon R.M. Hall, Brenda L. Thompson, Woodrow B. Kaplan, Michael R. Garcia, Juan Luis Schaefer, Joerg M. |
author_sort |
Bromley, Gordon R.M. |
title |
Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A. |
title_short |
Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A. |
title_full |
Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A. |
title_fullStr |
Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A. |
title_full_unstemmed |
Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A. |
title_sort |
late glacial fluctuations of the laurentide ice sheet in the white mountains of maine and new hampshire, u.s.a. |
publisher |
Cambridge University Press and Elsevier |
publishDate |
2018 |
url |
http://hdl.handle.net/10379/14778 https://doi.org/10.13025/19904 https://doi.org/10.1016/j.yqres.2015.02.004 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Ice Sheet |
genre_facet |
Greenland Ice Sheet |
op_relation |
Quaternary Research Bromley, Gordon R. M., Hall, Brenda L., Thompson, Woodrow B., Kaplan, Michael R., Garcia, Juan Luis, & Schaefer, Joerg M. (2015). Late glacial fluctuations of the Laurentide Ice Sheet in the White Mountains of Maine and New Hampshire, U.S.A. Quaternary Research, 83(3), 522-530. doi: https://doi.org/10.1016/j.yqres.2015.02.004 1096-0287 http://hdl.handle.net/10379/14778 https://doi.org/10.13025/19904 doi:10.1016/j.yqres.2015.02.004 |
op_rights |
Attribution-NonCommercial-NoDerivs 3.0 Ireland https://creativecommons.org/licenses/by-nc-nd/3.0/ie/ |
op_doi |
https://doi.org/10.13025/1990410.1016/j.yqres.2015.02.004 |
_version_ |
1811639136407257088 |