Geomorphologic and Sedimentary Evolution of a Transgressive Thermokarst Coast, Mackenzie Delta Region, Canadian Beaufort Sea
Transgression of a thermokarst coastline results in the development of a distinctive coastal morphology consisting of breached thermokarst lakes, separated by narrow headlands fringed by barrier-spit complexes and sandflats. A detailed description of the geomorphology and sediment facies of one such...
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Journal of Coastal Research
1999
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ftfloridaojojs:oai:journals.flvc.org:article/81163 2023-05-15T15:40:14+02:00 Geomorphologic and Sedimentary Evolution of a Transgressive Thermokarst Coast, Mackenzie Delta Region, Canadian Beaufort Sea Hill, Philip R. Solomon, Steven 1999-10-23 application/pdf https://journals.flvc.org/jcr/article/view/81163 eng eng Journal of Coastal Research https://journals.flvc.org/jcr/article/view/81163/78315 https://journals.flvc.org/jcr/article/view/81163 Journal of Coastal Research; Vol 15 No 4 (1999): Journal of Coastal Research 0749-0208 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Peer-reviewed Article 1999 ftfloridaojojs 2020-11-14T19:20:46Z Transgression of a thermokarst coastline results in the development of a distinctive coastal morphology consisting of breached thermokarst lakes, separated by narrow headlands fringed by barrier-spit complexes and sandflats. A detailed description of the geomorphology and sediment facies of one such area east of North Head in the Canadian Beaufort Sea is combined with seismic and core analysis from the adjacent inner shelf to develop a sedimentologic model for use in interpolating geotechnical conditions in the region. The model proposes the sedimentary successions that develop during transgression in a number of sub-environments related to the thermokarst morphology. It differs from conventional shoreface evolution models in that thermokarst processes create additional accommodation space at the coastline. This extra space, formerly occupied by ground ice, is rapidly filled by coastal and shelf lithosomes, the latter consisting principally of mud from the nearby Mackenzie River. Article in Journal/Newspaper Beaufort Sea Mackenzie Delta Mackenzie river Thermokarst Florida Online Journals (FloridaOJ) Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Mackenzie River |
institution |
Open Polar |
collection |
Florida Online Journals (FloridaOJ) |
op_collection_id |
ftfloridaojojs |
language |
English |
description |
Transgression of a thermokarst coastline results in the development of a distinctive coastal morphology consisting of breached thermokarst lakes, separated by narrow headlands fringed by barrier-spit complexes and sandflats. A detailed description of the geomorphology and sediment facies of one such area east of North Head in the Canadian Beaufort Sea is combined with seismic and core analysis from the adjacent inner shelf to develop a sedimentologic model for use in interpolating geotechnical conditions in the region. The model proposes the sedimentary successions that develop during transgression in a number of sub-environments related to the thermokarst morphology. It differs from conventional shoreface evolution models in that thermokarst processes create additional accommodation space at the coastline. This extra space, formerly occupied by ground ice, is rapidly filled by coastal and shelf lithosomes, the latter consisting principally of mud from the nearby Mackenzie River. |
format |
Article in Journal/Newspaper |
author |
Hill, Philip R. Solomon, Steven |
spellingShingle |
Hill, Philip R. Solomon, Steven Geomorphologic and Sedimentary Evolution of a Transgressive Thermokarst Coast, Mackenzie Delta Region, Canadian Beaufort Sea |
author_facet |
Hill, Philip R. Solomon, Steven |
author_sort |
Hill, Philip R. |
title |
Geomorphologic and Sedimentary Evolution of a Transgressive Thermokarst Coast, Mackenzie Delta Region, Canadian Beaufort Sea |
title_short |
Geomorphologic and Sedimentary Evolution of a Transgressive Thermokarst Coast, Mackenzie Delta Region, Canadian Beaufort Sea |
title_full |
Geomorphologic and Sedimentary Evolution of a Transgressive Thermokarst Coast, Mackenzie Delta Region, Canadian Beaufort Sea |
title_fullStr |
Geomorphologic and Sedimentary Evolution of a Transgressive Thermokarst Coast, Mackenzie Delta Region, Canadian Beaufort Sea |
title_full_unstemmed |
Geomorphologic and Sedimentary Evolution of a Transgressive Thermokarst Coast, Mackenzie Delta Region, Canadian Beaufort Sea |
title_sort |
geomorphologic and sedimentary evolution of a transgressive thermokarst coast, mackenzie delta region, canadian beaufort sea |
publisher |
Journal of Coastal Research |
publishDate |
1999 |
url |
https://journals.flvc.org/jcr/article/view/81163 |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) |
geographic |
Mackenzie Delta Mackenzie River |
geographic_facet |
Mackenzie Delta Mackenzie River |
genre |
Beaufort Sea Mackenzie Delta Mackenzie river Thermokarst |
genre_facet |
Beaufort Sea Mackenzie Delta Mackenzie river Thermokarst |
op_source |
Journal of Coastal Research; Vol 15 No 4 (1999): Journal of Coastal Research 0749-0208 |
op_relation |
https://journals.flvc.org/jcr/article/view/81163/78315 https://journals.flvc.org/jcr/article/view/81163 |
_version_ |
1766372405643575296 |