Reconstructed topography of Southern New England prior to isostatic rebound with implications of total isostatic depression and relative sea level
Abstract Topographic models of the late Quaternary landscape prior to isostatic rebound aid interpretation of glacial lake-water levels and geomorphic features as well as ice thickness, mantle viscosity and lithospheric strength. The well-established limit of glacial marine inundation in central and...
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Language: | English |
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Cambridge University Press (CUP)
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Online Access: | http://dx.doi.org/10.1016/j.yqres.2012.03.002 http://api.elsevier.com/content/article/PII:S0033589412000282?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589412000282?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400008437 |
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crcambridgeupr:10.1016/j.yqres.2012.03.002 2024-06-09T07:46:47+00:00 Reconstructed topography of Southern New England prior to isostatic rebound with implications of total isostatic depression and relative sea level Oakley, Bryan A. Boothroyd, Jon C. 2012 http://dx.doi.org/10.1016/j.yqres.2012.03.002 http://api.elsevier.com/content/article/PII:S0033589412000282?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589412000282?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400008437 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 78, issue 1, page 110-118 ISSN 0033-5894 1096-0287 journal-article 2012 crcambridgeupr https://doi.org/10.1016/j.yqres.2012.03.002 2024-05-15T13:09:51Z Abstract Topographic models of the late Quaternary landscape prior to isostatic rebound aid interpretation of glacial lake-water levels and geomorphic features as well as ice thickness, mantle viscosity and lithospheric strength. The well-established limit of glacial marine inundation in central and northern New England provides a test of total isostatic depression. Relative sea levels reflecting differing magnitudes of isostatic rebound show that published values of isostatic depression in southern New England would inundate the landscape in southern New England with marine water south of the limit of late Pleistocene marine inundation. This suggests that isostatic depression at the terminal margin of the Laurentide Ice Sheet (LIS) was < 35 m, and that previous workers overestimate isostatic depression in southern New England by > 50 m. A first-order estimate of ice thickness based on total isostatic depression and the observed uplift profile in southern New England supports the ‘thin ice’ models in New England. Ice thickness ranged from 100 m at the southeastern margin of the LIS, to > 1000 m at a point 300 km north of the terminal margin. This regional model places constraints on continental ice-sheet and geophysical models that should be considered in the future. Article in Journal/Newspaper Ice Sheet Cambridge University Press Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) Quaternary Research 78 1 110 118 |
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Open Polar |
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Cambridge University Press |
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crcambridgeupr |
language |
English |
description |
Abstract Topographic models of the late Quaternary landscape prior to isostatic rebound aid interpretation of glacial lake-water levels and geomorphic features as well as ice thickness, mantle viscosity and lithospheric strength. The well-established limit of glacial marine inundation in central and northern New England provides a test of total isostatic depression. Relative sea levels reflecting differing magnitudes of isostatic rebound show that published values of isostatic depression in southern New England would inundate the landscape in southern New England with marine water south of the limit of late Pleistocene marine inundation. This suggests that isostatic depression at the terminal margin of the Laurentide Ice Sheet (LIS) was < 35 m, and that previous workers overestimate isostatic depression in southern New England by > 50 m. A first-order estimate of ice thickness based on total isostatic depression and the observed uplift profile in southern New England supports the ‘thin ice’ models in New England. Ice thickness ranged from 100 m at the southeastern margin of the LIS, to > 1000 m at a point 300 km north of the terminal margin. This regional model places constraints on continental ice-sheet and geophysical models that should be considered in the future. |
format |
Article in Journal/Newspaper |
author |
Oakley, Bryan A. Boothroyd, Jon C. |
spellingShingle |
Oakley, Bryan A. Boothroyd, Jon C. Reconstructed topography of Southern New England prior to isostatic rebound with implications of total isostatic depression and relative sea level |
author_facet |
Oakley, Bryan A. Boothroyd, Jon C. |
author_sort |
Oakley, Bryan A. |
title |
Reconstructed topography of Southern New England prior to isostatic rebound with implications of total isostatic depression and relative sea level |
title_short |
Reconstructed topography of Southern New England prior to isostatic rebound with implications of total isostatic depression and relative sea level |
title_full |
Reconstructed topography of Southern New England prior to isostatic rebound with implications of total isostatic depression and relative sea level |
title_fullStr |
Reconstructed topography of Southern New England prior to isostatic rebound with implications of total isostatic depression and relative sea level |
title_full_unstemmed |
Reconstructed topography of Southern New England prior to isostatic rebound with implications of total isostatic depression and relative sea level |
title_sort |
reconstructed topography of southern new england prior to isostatic rebound with implications of total isostatic depression and relative sea level |
publisher |
Cambridge University Press (CUP) |
publishDate |
2012 |
url |
http://dx.doi.org/10.1016/j.yqres.2012.03.002 http://api.elsevier.com/content/article/PII:S0033589412000282?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589412000282?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0033589400008437 |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) |
geographic |
Glacial Lake |
geographic_facet |
Glacial Lake |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Quaternary Research volume 78, issue 1, page 110-118 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1016/j.yqres.2012.03.002 |
container_title |
Quaternary Research |
container_volume |
78 |
container_issue |
1 |
container_start_page |
110 |
op_container_end_page |
118 |
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1801376780547784704 |