Quaternary environmental change in the Stikine Plateau region, northwestern British Columbia, Canada
Bibliography: p. 289-313. Records of Quaternary environmental change have been resolved on the Stikine Plateau of northwestern British Columbia. Glacial sediment has been preserved between Early Pleistocene basalt flows on Mt. Edziza and underneath Middle Pleistocene basalt flows in the Stikine Rive...
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ftunivcalgary:oai:prism.ucalgary.ca:1880/30361 2023-08-27T04:12:15+02:00 Quaternary environmental change in the Stikine Plateau region, northwestern British Columbia, Canada Spooner, Ian Stewart Osborn, Gerald D. 200000427 1994 xviii, 313 leaves : ill. 30 cm. application/pdf http://hdl.handle.net/1880/30361 https://doi.org/10.11575/PRISM/15661 eng eng University of Calgary Calgary Spooner, I. S. (1994). Quaternary environmental change in the Stikine Plateau region, northwestern British Columbia, Canada (Unpublished doctoral thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/15661 http://dx.doi.org/10.11575/PRISM/15661 0315994924 QE 696 S726 1994a http://hdl.handle.net/1880/30361 University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. QE 696 S726 1994a Additional Copy: QE 696 S726 1994 Geology Stratigraphic - Quaternary Geology - British Columbia - Stikine River region doctoral thesis 1994 ftunivcalgary https://doi.org/10.11575/PRISM/15661 2023-08-06T06:20:38Z Bibliography: p. 289-313. Records of Quaternary environmental change have been resolved on the Stikine Plateau of northwestern British Columbia. Glacial sediment has been preserved between Early Pleistocene basalt flows on Mt. Edziza and underneath Middle Pleistocene basalt flows in the Stikine River valley. The Mt. Edziza record indicates that regional ice advanced from the southwest and west of Mt. Edziza and inundated the plateau. Radiometric and paleomagnetic dating indicates sediment deposition occurred during isotope stages 24 to 26. Paleomagnetic sampling resulted in the resolution of the Jaramillo normal polarity event within the section. The Stikine River valley section indicates that river blockage and glaciolacustrine sediment deposition occurred at about 330 ± 30 ka (isotope stage 10). The blockage was a result of early ice advance in the Coast Mountains and eventual regional ice cover is indicated by till overlying the glaciolacustrine sediment. Advance-phase glaciolacustrine sediment deposited in the Stikine River valley is a record of blockage of the Stikine River by alpine glaciation during early Fraser glaciation time. The extent and thickness (>150 m) of the section indicates that a considerable lag occurred between alpine and Cordilleran ice advance into the region. Boulder lags, perched meltwater paleochannels and extensive scouring indicate that post-glacial fluvial incision was swift and that stagnant ice may have resided in the valley during deglaciation. A palynological investigation of Susie Lake, eastern Boundary Ranges, Coast Mountains, has yielded a comprehensive Late Quaternary biostratigraphic record. Paleovegetational zones record initial colonization (by 10,000 - 7800 BP), establishment of a spruce and fir forest ecotone established by warming climate (about 7800-4200 BP), gradual cooling and precipitation inc·rease accompanied by migration of lodgepole pine into the region (about 4200 - 2100 BP) and moist and cool conditions and a lowering of treeline (about 2100 BP - ... Doctoral or Postdoctoral Thesis Stikine River PRISM - University of Calgary Digital Repository Canada British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Stikine ENVELOPE(-131.803,-131.803,56.699,56.699) Stikine River ENVELOPE(-131.839,-131.839,56.654,56.654) Stikine Plateau ENVELOPE(-129.887,-129.887,58.383,58.383) |
institution |
Open Polar |
collection |
PRISM - University of Calgary Digital Repository |
op_collection_id |
ftunivcalgary |
language |
English |
topic |
QE 696 S726 1994a Additional Copy: QE 696 S726 1994 Geology Stratigraphic - Quaternary Geology - British Columbia - Stikine River region |
spellingShingle |
QE 696 S726 1994a Additional Copy: QE 696 S726 1994 Geology Stratigraphic - Quaternary Geology - British Columbia - Stikine River region Spooner, Ian Stewart Quaternary environmental change in the Stikine Plateau region, northwestern British Columbia, Canada |
topic_facet |
QE 696 S726 1994a Additional Copy: QE 696 S726 1994 Geology Stratigraphic - Quaternary Geology - British Columbia - Stikine River region |
description |
Bibliography: p. 289-313. Records of Quaternary environmental change have been resolved on the Stikine Plateau of northwestern British Columbia. Glacial sediment has been preserved between Early Pleistocene basalt flows on Mt. Edziza and underneath Middle Pleistocene basalt flows in the Stikine River valley. The Mt. Edziza record indicates that regional ice advanced from the southwest and west of Mt. Edziza and inundated the plateau. Radiometric and paleomagnetic dating indicates sediment deposition occurred during isotope stages 24 to 26. Paleomagnetic sampling resulted in the resolution of the Jaramillo normal polarity event within the section. The Stikine River valley section indicates that river blockage and glaciolacustrine sediment deposition occurred at about 330 ± 30 ka (isotope stage 10). The blockage was a result of early ice advance in the Coast Mountains and eventual regional ice cover is indicated by till overlying the glaciolacustrine sediment. Advance-phase glaciolacustrine sediment deposited in the Stikine River valley is a record of blockage of the Stikine River by alpine glaciation during early Fraser glaciation time. The extent and thickness (>150 m) of the section indicates that a considerable lag occurred between alpine and Cordilleran ice advance into the region. Boulder lags, perched meltwater paleochannels and extensive scouring indicate that post-glacial fluvial incision was swift and that stagnant ice may have resided in the valley during deglaciation. A palynological investigation of Susie Lake, eastern Boundary Ranges, Coast Mountains, has yielded a comprehensive Late Quaternary biostratigraphic record. Paleovegetational zones record initial colonization (by 10,000 - 7800 BP), establishment of a spruce and fir forest ecotone established by warming climate (about 7800-4200 BP), gradual cooling and precipitation inc·rease accompanied by migration of lodgepole pine into the region (about 4200 - 2100 BP) and moist and cool conditions and a lowering of treeline (about 2100 BP - ... |
author2 |
Osborn, Gerald D. |
format |
Doctoral or Postdoctoral Thesis |
author |
Spooner, Ian Stewart |
author_facet |
Spooner, Ian Stewart |
author_sort |
Spooner, Ian Stewart |
title |
Quaternary environmental change in the Stikine Plateau region, northwestern British Columbia, Canada |
title_short |
Quaternary environmental change in the Stikine Plateau region, northwestern British Columbia, Canada |
title_full |
Quaternary environmental change in the Stikine Plateau region, northwestern British Columbia, Canada |
title_fullStr |
Quaternary environmental change in the Stikine Plateau region, northwestern British Columbia, Canada |
title_full_unstemmed |
Quaternary environmental change in the Stikine Plateau region, northwestern British Columbia, Canada |
title_sort |
quaternary environmental change in the stikine plateau region, northwestern british columbia, canada |
publisher |
University of Calgary |
publishDate |
1994 |
url |
http://hdl.handle.net/1880/30361 https://doi.org/10.11575/PRISM/15661 |
op_coverage |
200000427 |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) ENVELOPE(-131.803,-131.803,56.699,56.699) ENVELOPE(-131.839,-131.839,56.654,56.654) ENVELOPE(-129.887,-129.887,58.383,58.383) |
geographic |
Canada British Columbia Stikine Stikine River Stikine Plateau |
geographic_facet |
Canada British Columbia Stikine Stikine River Stikine Plateau |
genre |
Stikine River |
genre_facet |
Stikine River |
op_relation |
Spooner, I. S. (1994). Quaternary environmental change in the Stikine Plateau region, northwestern British Columbia, Canada (Unpublished doctoral thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/15661 http://dx.doi.org/10.11575/PRISM/15661 0315994924 QE 696 S726 1994a http://hdl.handle.net/1880/30361 |
op_rights |
University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. |
op_doi |
https://doi.org/10.11575/PRISM/15661 |
_version_ |
1775356198279708672 |