Pleistocene Ventifacts and Ice‐Marginal Conditions, New Jersey, USA
Abstract The Pleistocene environment of the New Jersey Pine Barrens has been interpreted as either cool and moist, with boreal forest, or cold and dry, with semi‐desert conditions. The presence of ventifacts is often cited as perfunctory evidence for strong Pleistocene wind action and sparse vegetat...
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crwiley:10.1002/ppp.1860 2024-06-02T08:08:18+00:00 Pleistocene Ventifacts and Ice‐Marginal Conditions, New Jersey, USA Demitroff, Mark 2015 http://dx.doi.org/10.1002/ppp.1860 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1860 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1860 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 27, issue 1, page 123-137 ISSN 1045-6740 1099-1530 journal-article 2015 crwiley https://doi.org/10.1002/ppp.1860 2024-05-03T11:23:22Z Abstract The Pleistocene environment of the New Jersey Pine Barrens has been interpreted as either cool and moist, with boreal forest, or cold and dry, with semi‐desert conditions. The presence of ventifacts is often cited as perfunctory evidence for strong Pleistocene wind action and sparse vegetation. This study examines sites where ventifacts had been reported and identifies abundant pebble‐ to boulder‐sized samples with a wide suite of erosional forms. Faceting occurred when the land was sparsely vegetated, allowing abundant wind‐entrained abradants to etch gravel and rocks as a consequence of katabatic winds blowing off the nearby Laurentide Ice Sheet. Most ventifacts occur on upland surfaces and attest to geomorphic stability in this part of the region's otherwise low‐relief landscape. Ventifacts were reworked and incorporated within deposits attributed to periglacial mass movement, particularly during climatic amelioration. Aeolian features such as pavement einkante, scallops and weathering pits can evolve only where sustained wind velocities are very high, sand sources are abundant and vegetation is absent. The Pine Barrens' ventifacts provide evidence of cold, dry and windy conditions and aid in the interpretation of landscape evolution. Copyright © 2015 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice Sheet Permafrost and Periglacial Processes Wiley Online Library Permafrost and Periglacial Processes 27 1 123 137 |
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Open Polar |
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Wiley Online Library |
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English |
description |
Abstract The Pleistocene environment of the New Jersey Pine Barrens has been interpreted as either cool and moist, with boreal forest, or cold and dry, with semi‐desert conditions. The presence of ventifacts is often cited as perfunctory evidence for strong Pleistocene wind action and sparse vegetation. This study examines sites where ventifacts had been reported and identifies abundant pebble‐ to boulder‐sized samples with a wide suite of erosional forms. Faceting occurred when the land was sparsely vegetated, allowing abundant wind‐entrained abradants to etch gravel and rocks as a consequence of katabatic winds blowing off the nearby Laurentide Ice Sheet. Most ventifacts occur on upland surfaces and attest to geomorphic stability in this part of the region's otherwise low‐relief landscape. Ventifacts were reworked and incorporated within deposits attributed to periglacial mass movement, particularly during climatic amelioration. Aeolian features such as pavement einkante, scallops and weathering pits can evolve only where sustained wind velocities are very high, sand sources are abundant and vegetation is absent. The Pine Barrens' ventifacts provide evidence of cold, dry and windy conditions and aid in the interpretation of landscape evolution. Copyright © 2015 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Demitroff, Mark |
spellingShingle |
Demitroff, Mark Pleistocene Ventifacts and Ice‐Marginal Conditions, New Jersey, USA |
author_facet |
Demitroff, Mark |
author_sort |
Demitroff, Mark |
title |
Pleistocene Ventifacts and Ice‐Marginal Conditions, New Jersey, USA |
title_short |
Pleistocene Ventifacts and Ice‐Marginal Conditions, New Jersey, USA |
title_full |
Pleistocene Ventifacts and Ice‐Marginal Conditions, New Jersey, USA |
title_fullStr |
Pleistocene Ventifacts and Ice‐Marginal Conditions, New Jersey, USA |
title_full_unstemmed |
Pleistocene Ventifacts and Ice‐Marginal Conditions, New Jersey, USA |
title_sort |
pleistocene ventifacts and ice‐marginal conditions, new jersey, usa |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1002/ppp.1860 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1860 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1860 |
genre |
Ice Sheet Permafrost and Periglacial Processes |
genre_facet |
Ice Sheet Permafrost and Periglacial Processes |
op_source |
Permafrost and Periglacial Processes volume 27, issue 1, page 123-137 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1860 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
27 |
container_issue |
1 |
container_start_page |
123 |
op_container_end_page |
137 |
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1800753500608528384 |