Past permafrost on the Mid‐Atlantic Coastal Plain, eastern United States
Abstract Sand‐wedge casts, soil wedges and other non‐diastrophic, post‐depositional sedimentary structures suggest that Late‐Pleistocene permafrost and deep seasonal frost on the Mid‐Atlantic Coastal Plain extended at least as far south as southern Delaware, the Eastern Shore and southern Maryland....
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crwiley:10.1002/ppp.659 2024-06-02T08:12:54+00:00 Past permafrost on the Mid‐Atlantic Coastal Plain, eastern United States French, Hugh Demitroff, Mark Newell, Wayne L. 2009 http://dx.doi.org/10.1002/ppp.659 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.659 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.659 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 20, issue 3, page 285-294 ISSN 1045-6740 1099-1530 journal-article 2009 crwiley https://doi.org/10.1002/ppp.659 2024-05-03T11:50:56Z Abstract Sand‐wedge casts, soil wedges and other non‐diastrophic, post‐depositional sedimentary structures suggest that Late‐Pleistocene permafrost and deep seasonal frost on the Mid‐Atlantic Coastal Plain extended at least as far south as southern Delaware, the Eastern Shore and southern Maryland. Heterogeneous cold‐climate slope deposits mantle lower valley‐side slopes in central Maryland. A widespread pre‐existing fragipan is congruent with the inferred palaeo‐permafrost table. The high bulk density of the fragipan was probably enhanced by either thaw consolidation when icy permafrost degraded at the active layer‐permafrost interface or by liquefaction and compaction when deep seasonal frost thawed. Copyright © 2009 John Wiley & Sons, Ltd. Article in Journal/Newspaper permafrost Permafrost and Periglacial Processes wedge* Wiley Online Library Permafrost and Periglacial Processes 20 3 285 294 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Sand‐wedge casts, soil wedges and other non‐diastrophic, post‐depositional sedimentary structures suggest that Late‐Pleistocene permafrost and deep seasonal frost on the Mid‐Atlantic Coastal Plain extended at least as far south as southern Delaware, the Eastern Shore and southern Maryland. Heterogeneous cold‐climate slope deposits mantle lower valley‐side slopes in central Maryland. A widespread pre‐existing fragipan is congruent with the inferred palaeo‐permafrost table. The high bulk density of the fragipan was probably enhanced by either thaw consolidation when icy permafrost degraded at the active layer‐permafrost interface or by liquefaction and compaction when deep seasonal frost thawed. Copyright © 2009 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
French, Hugh Demitroff, Mark Newell, Wayne L. |
spellingShingle |
French, Hugh Demitroff, Mark Newell, Wayne L. Past permafrost on the Mid‐Atlantic Coastal Plain, eastern United States |
author_facet |
French, Hugh Demitroff, Mark Newell, Wayne L. |
author_sort |
French, Hugh |
title |
Past permafrost on the Mid‐Atlantic Coastal Plain, eastern United States |
title_short |
Past permafrost on the Mid‐Atlantic Coastal Plain, eastern United States |
title_full |
Past permafrost on the Mid‐Atlantic Coastal Plain, eastern United States |
title_fullStr |
Past permafrost on the Mid‐Atlantic Coastal Plain, eastern United States |
title_full_unstemmed |
Past permafrost on the Mid‐Atlantic Coastal Plain, eastern United States |
title_sort |
past permafrost on the mid‐atlantic coastal plain, eastern united states |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1002/ppp.659 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.659 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.659 |
genre |
permafrost Permafrost and Periglacial Processes wedge* |
genre_facet |
permafrost Permafrost and Periglacial Processes wedge* |
op_source |
Permafrost and Periglacial Processes volume 20, issue 3, page 285-294 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.659 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
20 |
container_issue |
3 |
container_start_page |
285 |
op_container_end_page |
294 |
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1800759486890115072 |