Sedimentation in an esker system influenced by bedrock topography near Kingston, Ontario
Late Wisconsinan sand and gravel deposits on the Frontenac Arch, Ontario, record a major meltwater drainage system developed subglacially and subaqueously in one or more glacial lake phases of the Lake Ontario basin during retreat of the Laurentide Ice Sheet. Factors influencing channel location, mo...
Published in: | Canadian Journal of Earth Sciences |
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Language: | French |
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1988
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Online Access: | http://dx.doi.org/10.1139/e88-098 http://www.nrcresearchpress.com/doi/pdf/10.1139/e88-098 |
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crcansciencepubl:10.1139/e88-098 2023-12-17T10:31:47+01:00 Sedimentation in an esker system influenced by bedrock topography near Kingston, Ontario Henderson, Penny J. 1988 http://dx.doi.org/10.1139/e88-098 http://www.nrcresearchpress.com/doi/pdf/10.1139/e88-098 fr fre Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 25, issue 7, page 987-999 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1988 crcansciencepubl https://doi.org/10.1139/e88-098 2023-11-19T13:39:38Z Late Wisconsinan sand and gravel deposits on the Frontenac Arch, Ontario, record a major meltwater drainage system developed subglacially and subaqueously in one or more glacial lake phases of the Lake Ontario basin during retreat of the Laurentide Ice Sheet. Factors influencing channel location, morphology, and sediment deposition are ice flow direction and the Precambrian bedrock topography, in turn dependent upon bedrock structure and composition. Meltwater drainage across the Frontenac Arch is localized within a broad depression oriented approximately parallel to glacial flow. Sediment deposition within the regional depression follows ice-flow direction despite irregular bedrock relief, indicating formation of the meltwater system and associated sediments in three stages: (i) establishment of a continuous meltwater system subglacially under high hydrostatic pressure with minor erosion of underlying Precambrian bedrock; (ii) deposition of poorly sorted, coarse-grained sediment in cavities or channels associated with irregular bedrock topography; and (iii) deposition of several coalescing subaqueous outwash fans at the ice margin as the glacier receded from the area. The discontinuous nature of the deposits and the association of proximal to distal outwash fan facies within a deposit suggest that esker sedimentation occurred during periodic stabilization of the ice front during deglaciation. Article in Journal/Newspaper Ice Sheet Canadian Science Publishing (via Crossref) Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) Canadian Journal of Earth Sciences 25 7 987 999 |
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Open Polar |
collection |
Canadian Science Publishing (via Crossref) |
op_collection_id |
crcansciencepubl |
language |
French |
topic |
General Earth and Planetary Sciences |
spellingShingle |
General Earth and Planetary Sciences Henderson, Penny J. Sedimentation in an esker system influenced by bedrock topography near Kingston, Ontario |
topic_facet |
General Earth and Planetary Sciences |
description |
Late Wisconsinan sand and gravel deposits on the Frontenac Arch, Ontario, record a major meltwater drainage system developed subglacially and subaqueously in one or more glacial lake phases of the Lake Ontario basin during retreat of the Laurentide Ice Sheet. Factors influencing channel location, morphology, and sediment deposition are ice flow direction and the Precambrian bedrock topography, in turn dependent upon bedrock structure and composition. Meltwater drainage across the Frontenac Arch is localized within a broad depression oriented approximately parallel to glacial flow. Sediment deposition within the regional depression follows ice-flow direction despite irregular bedrock relief, indicating formation of the meltwater system and associated sediments in three stages: (i) establishment of a continuous meltwater system subglacially under high hydrostatic pressure with minor erosion of underlying Precambrian bedrock; (ii) deposition of poorly sorted, coarse-grained sediment in cavities or channels associated with irregular bedrock topography; and (iii) deposition of several coalescing subaqueous outwash fans at the ice margin as the glacier receded from the area. The discontinuous nature of the deposits and the association of proximal to distal outwash fan facies within a deposit suggest that esker sedimentation occurred during periodic stabilization of the ice front during deglaciation. |
format |
Article in Journal/Newspaper |
author |
Henderson, Penny J. |
author_facet |
Henderson, Penny J. |
author_sort |
Henderson, Penny J. |
title |
Sedimentation in an esker system influenced by bedrock topography near Kingston, Ontario |
title_short |
Sedimentation in an esker system influenced by bedrock topography near Kingston, Ontario |
title_full |
Sedimentation in an esker system influenced by bedrock topography near Kingston, Ontario |
title_fullStr |
Sedimentation in an esker system influenced by bedrock topography near Kingston, Ontario |
title_full_unstemmed |
Sedimentation in an esker system influenced by bedrock topography near Kingston, Ontario |
title_sort |
sedimentation in an esker system influenced by bedrock topography near kingston, ontario |
publisher |
Canadian Science Publishing |
publishDate |
1988 |
url |
http://dx.doi.org/10.1139/e88-098 http://www.nrcresearchpress.com/doi/pdf/10.1139/e88-098 |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) |
geographic |
Glacial Lake |
geographic_facet |
Glacial Lake |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Canadian Journal of Earth Sciences volume 25, issue 7, page 987-999 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e88-098 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
25 |
container_issue |
7 |
container_start_page |
987 |
op_container_end_page |
999 |
_version_ |
1785585181643505664 |