Late Quaternary Sediments and Geomorphic History of the Southern Rocky Mountain Trench, British Columbia
The southern Rocky Mountain Trench was a major outlet valley of the Cordilleran Ice Sheet. Quaternary sediments underlying the floor of the trench in southeastern British Columbia consist mainly of glacial, glaciofluvial, and glaciolacustrine materials deposited during the Fraser (Pinedale) Glaciati...
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Canadian Science Publishing
1975
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crcansciencepubl:10.1139/e75-054 2024-06-23T07:53:48+00:00 Late Quaternary Sediments and Geomorphic History of the Southern Rocky Mountain Trench, British Columbia Clague, John J. 1975 http://dx.doi.org/10.1139/e75-054 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-054 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 12, issue 4, page 595-605 ISSN 0008-4077 1480-3313 journal-article 1975 crcansciencepubl https://doi.org/10.1139/e75-054 2024-06-06T04:11:15Z The southern Rocky Mountain Trench was a major outlet valley of the Cordilleran Ice Sheet. Quaternary sediments underlying the floor of the trench in southeastern British Columbia consist mainly of glacial, glaciofluvial, and glaciolacustrine materials deposited during the Fraser (Pinedale) Glaciation, and fluvial and lacustrine sediments deposited during the preceding interglaciation.Deposits of three stades and two intervening nonglacial intervals are recognized. Interglacial sediments which contain wood dated at 26 800 ± 1000 y B.P. underlie drift of the early stade. During the interval between the early and middle stades, the Rocky Mountain Trench in southeastern British Columbia probably was completely deglaciated, and sediments were deposited in one or more lakes on the floor of the trench. In contrast, glacier recession between the middle and late stades was of short duration and extent; glaciolacustrine sediments were deposited only along the margins of the Rocky Mountain Trench, and apparently residual ice remained in the center of the valley. Final recession of the trunk glacier occurred prior to 10 000 y B.P. with no major halts and without significant stagnation of the terminus. Article in Journal/Newspaper Ice Sheet Canadian Science Publishing Canadian Journal of Earth Sciences 12 4 595 605 |
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Open Polar |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
The southern Rocky Mountain Trench was a major outlet valley of the Cordilleran Ice Sheet. Quaternary sediments underlying the floor of the trench in southeastern British Columbia consist mainly of glacial, glaciofluvial, and glaciolacustrine materials deposited during the Fraser (Pinedale) Glaciation, and fluvial and lacustrine sediments deposited during the preceding interglaciation.Deposits of three stades and two intervening nonglacial intervals are recognized. Interglacial sediments which contain wood dated at 26 800 ± 1000 y B.P. underlie drift of the early stade. During the interval between the early and middle stades, the Rocky Mountain Trench in southeastern British Columbia probably was completely deglaciated, and sediments were deposited in one or more lakes on the floor of the trench. In contrast, glacier recession between the middle and late stades was of short duration and extent; glaciolacustrine sediments were deposited only along the margins of the Rocky Mountain Trench, and apparently residual ice remained in the center of the valley. Final recession of the trunk glacier occurred prior to 10 000 y B.P. with no major halts and without significant stagnation of the terminus. |
format |
Article in Journal/Newspaper |
author |
Clague, John J. |
spellingShingle |
Clague, John J. Late Quaternary Sediments and Geomorphic History of the Southern Rocky Mountain Trench, British Columbia |
author_facet |
Clague, John J. |
author_sort |
Clague, John J. |
title |
Late Quaternary Sediments and Geomorphic History of the Southern Rocky Mountain Trench, British Columbia |
title_short |
Late Quaternary Sediments and Geomorphic History of the Southern Rocky Mountain Trench, British Columbia |
title_full |
Late Quaternary Sediments and Geomorphic History of the Southern Rocky Mountain Trench, British Columbia |
title_fullStr |
Late Quaternary Sediments and Geomorphic History of the Southern Rocky Mountain Trench, British Columbia |
title_full_unstemmed |
Late Quaternary Sediments and Geomorphic History of the Southern Rocky Mountain Trench, British Columbia |
title_sort |
late quaternary sediments and geomorphic history of the southern rocky mountain trench, british columbia |
publisher |
Canadian Science Publishing |
publishDate |
1975 |
url |
http://dx.doi.org/10.1139/e75-054 http://www.nrcresearchpress.com/doi/pdf/10.1139/e75-054 |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Canadian Journal of Earth Sciences volume 12, issue 4, page 595-605 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e75-054 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
12 |
container_issue |
4 |
container_start_page |
595 |
op_container_end_page |
605 |
_version_ |
1802645631876988928 |