Wisconsin Glacial Chronology and Relative Sea-level Movements, Narpaing Fiord Broughton Island Area, Eastern Baffin Island, N.W.T.
Three distinct glacier advances and four major periods of adjustment of relative land and sea levels are recognized in the Wisconsin age stratigraphic and geomorphologic record of the Northern Cumber-land Peninsula. The coast, which is presently undergoing submergence, is close to an isostatic equil...
Published in: | Canadian Journal of Earth Sciences |
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Language: | English |
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Canadian Science Publishing
1973
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Online Access: | http://dx.doi.org/10.1139/e73-155 http://www.nrcresearchpress.com/doi/pdf/10.1139/e73-155 |
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crcansciencepubl:10.1139/e73-155 2023-12-17T10:25:27+01:00 Wisconsin Glacial Chronology and Relative Sea-level Movements, Narpaing Fiord Broughton Island Area, Eastern Baffin Island, N.W.T. Pheasant, D. R. Andrews, J. T. 1973 http://dx.doi.org/10.1139/e73-155 http://www.nrcresearchpress.com/doi/pdf/10.1139/e73-155 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 10, issue 11, page 1621-1641 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1973 crcansciencepubl https://doi.org/10.1139/e73-155 2023-11-19T13:39:37Z Three distinct glacier advances and four major periods of adjustment of relative land and sea levels are recognized in the Wisconsin age stratigraphic and geomorphologic record of the Northern Cumber-land Peninsula. The coast, which is presently undergoing submergence, is close to an isostatic equilibrium position following rapid land emergence during post-Cockburn time (ca. 8000–1000 BP). Laurentide ice advances during two earlier stades—the Alikdjuak ca. 115 000 BP and the Napiat > 40 000 BP—were more extensive than the Cockburn glacier advances and a positive relationship between ice load and amount of crustal deflection at the ice margin is demonstrated. Computations based on synchronous raised marine features and known extent of the ice load indicate a crustal flexural parameter (α) of > 80 km and perhaps > 135 km for this area. The date of the Alikdjuak stade suggests the time transgressive nature of the early-Wisconsin maximum position of the continental ice sheet margin and supports the hypothesis that continental glaciation may well have originated in the climatically sensitive uplands of the eastern Canadian arctic/sub-arctic. Article in Journal/Newspaper Arctic Baffin Island Baffin Ice Sheet Canadian Science Publishing (via Crossref) Arctic Baffin Island Cockburn ENVELOPE(-62.295,-62.295,-64.018,-64.018) Narpaing Fiord ENVELOPE(-65.547,-65.547,67.801,67.801) Canadian Journal of Earth Sciences 10 11 1621 1641 |
institution |
Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
English |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Pheasant, D. R. Andrews, J. T. Wisconsin Glacial Chronology and Relative Sea-level Movements, Narpaing Fiord Broughton Island Area, Eastern Baffin Island, N.W.T. |
topic_facet |
General Earth and Planetary Sciences |
description |
Three distinct glacier advances and four major periods of adjustment of relative land and sea levels are recognized in the Wisconsin age stratigraphic and geomorphologic record of the Northern Cumber-land Peninsula. The coast, which is presently undergoing submergence, is close to an isostatic equilibrium position following rapid land emergence during post-Cockburn time (ca. 8000–1000 BP). Laurentide ice advances during two earlier stades—the Alikdjuak ca. 115 000 BP and the Napiat > 40 000 BP—were more extensive than the Cockburn glacier advances and a positive relationship between ice load and amount of crustal deflection at the ice margin is demonstrated. Computations based on synchronous raised marine features and known extent of the ice load indicate a crustal flexural parameter (α) of > 80 km and perhaps > 135 km for this area. The date of the Alikdjuak stade suggests the time transgressive nature of the early-Wisconsin maximum position of the continental ice sheet margin and supports the hypothesis that continental glaciation may well have originated in the climatically sensitive uplands of the eastern Canadian arctic/sub-arctic. |
format |
Article in Journal/Newspaper |
author |
Pheasant, D. R. Andrews, J. T. |
author_facet |
Pheasant, D. R. Andrews, J. T. |
author_sort |
Pheasant, D. R. |
title |
Wisconsin Glacial Chronology and Relative Sea-level Movements, Narpaing Fiord Broughton Island Area, Eastern Baffin Island, N.W.T. |
title_short |
Wisconsin Glacial Chronology and Relative Sea-level Movements, Narpaing Fiord Broughton Island Area, Eastern Baffin Island, N.W.T. |
title_full |
Wisconsin Glacial Chronology and Relative Sea-level Movements, Narpaing Fiord Broughton Island Area, Eastern Baffin Island, N.W.T. |
title_fullStr |
Wisconsin Glacial Chronology and Relative Sea-level Movements, Narpaing Fiord Broughton Island Area, Eastern Baffin Island, N.W.T. |
title_full_unstemmed |
Wisconsin Glacial Chronology and Relative Sea-level Movements, Narpaing Fiord Broughton Island Area, Eastern Baffin Island, N.W.T. |
title_sort |
wisconsin glacial chronology and relative sea-level movements, narpaing fiord broughton island area, eastern baffin island, n.w.t. |
publisher |
Canadian Science Publishing |
publishDate |
1973 |
url |
http://dx.doi.org/10.1139/e73-155 http://www.nrcresearchpress.com/doi/pdf/10.1139/e73-155 |
long_lat |
ENVELOPE(-62.295,-62.295,-64.018,-64.018) ENVELOPE(-65.547,-65.547,67.801,67.801) |
geographic |
Arctic Baffin Island Cockburn Narpaing Fiord |
geographic_facet |
Arctic Baffin Island Cockburn Narpaing Fiord |
genre |
Arctic Baffin Island Baffin Ice Sheet |
genre_facet |
Arctic Baffin Island Baffin Ice Sheet |
op_source |
Canadian Journal of Earth Sciences volume 10, issue 11, page 1621-1641 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e73-155 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
10 |
container_issue |
11 |
container_start_page |
1621 |
op_container_end_page |
1641 |
_version_ |
1785576923456339968 |