Syngenetic permafrost growth: cryostratigraphic observations from the CRREL tunnel near Fairbanks, Alaska
Abstract Syngenetic permafrost forms when alluvial, aeolian and/or colluvial sediment accumulates under cold‐climate conditions. Observations from within the CRREL permafrost tunnel near Fairbanks, Alaska, indicate that layered, lenticular‐layered and micro‐lenticular cryogenic structures are charac...
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crwiley:10.1002/ppp.486 2024-09-15T18:11:20+00:00 Syngenetic permafrost growth: cryostratigraphic observations from the CRREL tunnel near Fairbanks, Alaska Shur, Y. French, H. M. Bray, M. T. Anderson, D. A. 2004 http://dx.doi.org/10.1002/ppp.486 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.486 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.486 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 15, issue 4, page 339-347 ISSN 1045-6740 1099-1530 journal-article 2004 crwiley https://doi.org/10.1002/ppp.486 2024-07-25T04:19:08Z Abstract Syngenetic permafrost forms when alluvial, aeolian and/or colluvial sediment accumulates under cold‐climate conditions. Observations from within the CRREL permafrost tunnel near Fairbanks, Alaska, indicate that layered, lenticular‐layered and micro‐lenticular cryogenic structures are characteristic of this type of permafrost. In contrast, reticulate cryogenic structures indicate local thaw modification. During the growth of syngenetic permafrost, episodes of thermokarst erosion may operate preferentially along ice wedges leading to the development of gullies and tunnels in the near‐surface sediments. The local thaw unconformities that result are inferred by the recognition of thermokarst‐cave ice (‘pool’ ice), and various soil and ice pseudomorphs. These may be regarded as further characteristics of syngenetic permafrost growth. Copyright © 2004 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes Thermokarst wedge* Alaska Wiley Online Library Permafrost and Periglacial Processes 15 4 339 347 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Syngenetic permafrost forms when alluvial, aeolian and/or colluvial sediment accumulates under cold‐climate conditions. Observations from within the CRREL permafrost tunnel near Fairbanks, Alaska, indicate that layered, lenticular‐layered and micro‐lenticular cryogenic structures are characteristic of this type of permafrost. In contrast, reticulate cryogenic structures indicate local thaw modification. During the growth of syngenetic permafrost, episodes of thermokarst erosion may operate preferentially along ice wedges leading to the development of gullies and tunnels in the near‐surface sediments. The local thaw unconformities that result are inferred by the recognition of thermokarst‐cave ice (‘pool’ ice), and various soil and ice pseudomorphs. These may be regarded as further characteristics of syngenetic permafrost growth. Copyright © 2004 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Shur, Y. French, H. M. Bray, M. T. Anderson, D. A. |
spellingShingle |
Shur, Y. French, H. M. Bray, M. T. Anderson, D. A. Syngenetic permafrost growth: cryostratigraphic observations from the CRREL tunnel near Fairbanks, Alaska |
author_facet |
Shur, Y. French, H. M. Bray, M. T. Anderson, D. A. |
author_sort |
Shur, Y. |
title |
Syngenetic permafrost growth: cryostratigraphic observations from the CRREL tunnel near Fairbanks, Alaska |
title_short |
Syngenetic permafrost growth: cryostratigraphic observations from the CRREL tunnel near Fairbanks, Alaska |
title_full |
Syngenetic permafrost growth: cryostratigraphic observations from the CRREL tunnel near Fairbanks, Alaska |
title_fullStr |
Syngenetic permafrost growth: cryostratigraphic observations from the CRREL tunnel near Fairbanks, Alaska |
title_full_unstemmed |
Syngenetic permafrost growth: cryostratigraphic observations from the CRREL tunnel near Fairbanks, Alaska |
title_sort |
syngenetic permafrost growth: cryostratigraphic observations from the crrel tunnel near fairbanks, alaska |
publisher |
Wiley |
publishDate |
2004 |
url |
http://dx.doi.org/10.1002/ppp.486 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.486 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.486 |
genre |
Ice permafrost Permafrost and Periglacial Processes Thermokarst wedge* Alaska |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes Thermokarst wedge* Alaska |
op_source |
Permafrost and Periglacial Processes volume 15, issue 4, page 339-347 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.486 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
15 |
container_issue |
4 |
container_start_page |
339 |
op_container_end_page |
347 |
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1810448916319043584 |