Pleistocene geology and geomorphology of the Smoking Hills Upland and lower Horton River Arctic coast of mainland Canada
The Smoking Hills Upland and lower Horton River valley, on the Arctic coast of Canada 300 km east of the Mackenzie Delta, retain an extended record of subaerial erosion of nearly flat-lying Cretaceous shales. This erosion led to the development of (i) a very gently sloping low-relief upland surface...
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1989
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crcansciencepubl:10.1139/e89-144 2023-12-17T10:25:19+01:00 Pleistocene geology and geomorphology of the Smoking Hills Upland and lower Horton River Arctic coast of mainland Canada Mathews, William H. Mackay, J. Ross Rouse, Glenn E. 1989 http://dx.doi.org/10.1139/e89-144 http://www.nrcresearchpress.com/doi/pdf/10.1139/e89-144 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Earth Sciences volume 26, issue 9, page 1677-1687 ISSN 0008-4077 1480-3313 General Earth and Planetary Sciences journal-article 1989 crcansciencepubl https://doi.org/10.1139/e89-144 2023-11-19T13:39:13Z The Smoking Hills Upland and lower Horton River valley, on the Arctic coast of Canada 300 km east of the Mackenzie Delta, retain an extended record of subaerial erosion of nearly flat-lying Cretaceous shales. This erosion led to the development of (i) a very gently sloping low-relief upland surface (Early Pleistocene(?)), (ii) a slightly steeper intermediate surface, and (iii) younger steep valley walls, terraces, and broad valley bottoms. No direct glacial contribution to any of these landforms can be recognized. An early interglacial(?) fluvial episode is recorded in plateau-cap sediments. Suggestions of an early (mid-Pleistocene or earlier) glaciation overwhelming the Smoking Hills Upland are found in (i) anomalies in drainage patterns, (ii) disturbances in bedding, believed to have been caused by ice thrusting, and (iii) local occurrences of diamictons. Later, probably Early Wisconsinan, glaciation left meltwater channels in peripheral areas. The Late Wisconsinan ice sheet did not reach the Smoking Hills Upland but may have had an indirect influence by modyfying discharge and sediment transport of Horton River. Article in Journal/Newspaper Arctic Horton River Ice Sheet Mackenzie Delta Canadian Science Publishing (via Crossref) Arctic Canada Mackenzie Delta ENVELOPE(-136.672,-136.672,68.833,68.833) Broad Valley ENVELOPE(-57.869,-57.869,-63.526,-63.526) Smoking Hills ENVELOPE(-126.638,-126.638,69.559,69.559) Horton River ENVELOPE(-126.872,-126.872,69.942,69.942) Canadian Journal of Earth Sciences 26 9 1677 1687 |
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 Mathews, William H. Mackay, J. Ross Rouse, Glenn E. Pleistocene geology and geomorphology of the Smoking Hills Upland and lower Horton River Arctic coast of mainland Canada |
topic_facet |
General Earth and Planetary Sciences |
description |
The Smoking Hills Upland and lower Horton River valley, on the Arctic coast of Canada 300 km east of the Mackenzie Delta, retain an extended record of subaerial erosion of nearly flat-lying Cretaceous shales. This erosion led to the development of (i) a very gently sloping low-relief upland surface (Early Pleistocene(?)), (ii) a slightly steeper intermediate surface, and (iii) younger steep valley walls, terraces, and broad valley bottoms. No direct glacial contribution to any of these landforms can be recognized. An early interglacial(?) fluvial episode is recorded in plateau-cap sediments. Suggestions of an early (mid-Pleistocene or earlier) glaciation overwhelming the Smoking Hills Upland are found in (i) anomalies in drainage patterns, (ii) disturbances in bedding, believed to have been caused by ice thrusting, and (iii) local occurrences of diamictons. Later, probably Early Wisconsinan, glaciation left meltwater channels in peripheral areas. The Late Wisconsinan ice sheet did not reach the Smoking Hills Upland but may have had an indirect influence by modyfying discharge and sediment transport of Horton River. |
format |
Article in Journal/Newspaper |
author |
Mathews, William H. Mackay, J. Ross Rouse, Glenn E. |
author_facet |
Mathews, William H. Mackay, J. Ross Rouse, Glenn E. |
author_sort |
Mathews, William H. |
title |
Pleistocene geology and geomorphology of the Smoking Hills Upland and lower Horton River Arctic coast of mainland Canada |
title_short |
Pleistocene geology and geomorphology of the Smoking Hills Upland and lower Horton River Arctic coast of mainland Canada |
title_full |
Pleistocene geology and geomorphology of the Smoking Hills Upland and lower Horton River Arctic coast of mainland Canada |
title_fullStr |
Pleistocene geology and geomorphology of the Smoking Hills Upland and lower Horton River Arctic coast of mainland Canada |
title_full_unstemmed |
Pleistocene geology and geomorphology of the Smoking Hills Upland and lower Horton River Arctic coast of mainland Canada |
title_sort |
pleistocene geology and geomorphology of the smoking hills upland and lower horton river arctic coast of mainland canada |
publisher |
Canadian Science Publishing |
publishDate |
1989 |
url |
http://dx.doi.org/10.1139/e89-144 http://www.nrcresearchpress.com/doi/pdf/10.1139/e89-144 |
long_lat |
ENVELOPE(-136.672,-136.672,68.833,68.833) ENVELOPE(-57.869,-57.869,-63.526,-63.526) ENVELOPE(-126.638,-126.638,69.559,69.559) ENVELOPE(-126.872,-126.872,69.942,69.942) |
geographic |
Arctic Canada Mackenzie Delta Broad Valley Smoking Hills Horton River |
geographic_facet |
Arctic Canada Mackenzie Delta Broad Valley Smoking Hills Horton River |
genre |
Arctic Horton River Ice Sheet Mackenzie Delta |
genre_facet |
Arctic Horton River Ice Sheet Mackenzie Delta |
op_source |
Canadian Journal of Earth Sciences volume 26, issue 9, page 1677-1687 ISSN 0008-4077 1480-3313 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/e89-144 |
container_title |
Canadian Journal of Earth Sciences |
container_volume |
26 |
container_issue |
9 |
container_start_page |
1677 |
op_container_end_page |
1687 |
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