The Quaternary stratigraphic record of British Columbia—evidence for episodic sedimentation and erosion controlled by glaciation
The terrestrial Quaternary stratigraphic record of British Columbia is largely a product of brief depositional events separated by long periods of nondeposition and erosion. Thick, stratified Quaternary sediments are present mainly in valleys and coastal lowlands and accumulated during periods of gr...
Published in: | Canadian Journal of Earth Sciences |
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Canadian Science Publishing
1986
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crcansciencepubl:10.1139/e86-090 2024-09-15T18:12:26+00:00 The Quaternary stratigraphic record of British Columbia—evidence for episodic sedimentation and erosion controlled by glaciation Clague, John J. 1986 http://dx.doi.org/10.1139/e86-090 http://www.nrcresearchpress.com/doi/pdf/10.1139/e86-090 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 23, issue 6, page 885-894 ISSN 0008-4077 1480-3313 journal-article 1986 crcansciencepubl https://doi.org/10.1139/e86-090 2024-07-25T04:10:07Z The terrestrial Quaternary stratigraphic record of British Columbia is largely a product of brief depositional events separated by long periods of nondeposition and erosion. Thick, stratified Quaternary sediments are present mainly in valleys and coastal lowlands and accumulated during periods of growth and decay of the Cordilleran Ice Sheet. At glacial maxima, till was deposited over large areas of low and moderate relief. However, at the same time, much of the landscape was eroded by glaciers.Sedimentation has been more restricted and has occurred at lower rates during nonglacial periods than during glaciations. On land, the only important sediment accumulation sites during nonglacials have been lakes, floodplains, and fans. However, large amounts of sediment have accumulated offshore, especially in fjords and basins such as the Strait of Georgia. Because of the restricted aspect of sedimentation during nonglacials, the stratigraphic record of these periods is meagre. In most places, true nonglacial units are thin and discontinuous, or they are absent altogether. Commonly, a nonglacial period is recorded only by an unconformity produced when streams incised valley fills shortly after the end of the preceding glaciation. Article in Journal/Newspaper Ice Sheet Canadian Science Publishing Canadian Journal of Earth Sciences 23 6 885 894 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
The terrestrial Quaternary stratigraphic record of British Columbia is largely a product of brief depositional events separated by long periods of nondeposition and erosion. Thick, stratified Quaternary sediments are present mainly in valleys and coastal lowlands and accumulated during periods of growth and decay of the Cordilleran Ice Sheet. At glacial maxima, till was deposited over large areas of low and moderate relief. However, at the same time, much of the landscape was eroded by glaciers.Sedimentation has been more restricted and has occurred at lower rates during nonglacial periods than during glaciations. On land, the only important sediment accumulation sites during nonglacials have been lakes, floodplains, and fans. However, large amounts of sediment have accumulated offshore, especially in fjords and basins such as the Strait of Georgia. Because of the restricted aspect of sedimentation during nonglacials, the stratigraphic record of these periods is meagre. In most places, true nonglacial units are thin and discontinuous, or they are absent altogether. Commonly, a nonglacial period is recorded only by an unconformity produced when streams incised valley fills shortly after the end of the preceding glaciation. |
format |
Article in Journal/Newspaper |
author |
Clague, John J. |
spellingShingle |
Clague, John J. The Quaternary stratigraphic record of British Columbia—evidence for episodic sedimentation and erosion controlled by glaciation |
author_facet |
Clague, John J. |
author_sort |
Clague, John J. |
title |
The Quaternary stratigraphic record of British Columbia—evidence for episodic sedimentation and erosion controlled by glaciation |
title_short |
The Quaternary stratigraphic record of British Columbia—evidence for episodic sedimentation and erosion controlled by glaciation |
title_full |
The Quaternary stratigraphic record of British Columbia—evidence for episodic sedimentation and erosion controlled by glaciation |
title_fullStr |
The Quaternary stratigraphic record of British Columbia—evidence for episodic sedimentation and erosion controlled by glaciation |
title_full_unstemmed |
The Quaternary stratigraphic record of British Columbia—evidence for episodic sedimentation and erosion controlled by glaciation |
title_sort |
quaternary stratigraphic record of british columbia—evidence for episodic sedimentation and erosion controlled by glaciation |
publisher |
Canadian Science Publishing |
publishDate |
1986 |
url |
http://dx.doi.org/10.1139/e86-090 http://www.nrcresearchpress.com/doi/pdf/10.1139/e86-090 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Canadian Journal of Earth Sciences volume 23, issue 6, page 885-894 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e86-090 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
23 |
container_issue |
6 |
container_start_page |
885 |
op_container_end_page |
894 |
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1810450015208865792 |