Last edited by Faelar
Wednesday, July 15, 2020 | History

4 edition of Glacial features around the Keewatin Ice Divide found in the catalog.

Glacial features around the Keewatin Ice Divide

J. M. Aylsworth

Glacial features around the Keewatin Ice Divide

districts of Mackenzie and Keewatin

by J. M. Aylsworth

  • 115 Want to read
  • 7 Currently reading

Published by Energy, Mines, and Resources Canada in [Ottawa] .
Written in English

    Places:
  • Northwest Territories,
  • Mackenzie.,
  • Nunavut,
  • Keewatin.
    • Subjects:
    • Glacial landforms -- Northwest Territories -- Mackenzie.,
    • Glacial landforms -- Nunavut -- Keewatin.

    • Edition Notes

      StatementJ.M. Aylsworth, W.W. Shilts.
      SeriesPaper / Geological Survey of Canada ;, 88-24, Paper (Geological Survey of Canada) ;, 88-24.
      ContributionsShilts, W.
      Classifications
      LC ClassificationsQE185 .A42 no. 88-24, GB588.15 .A42 no. 88-24
      The Physical Object
      Pagination1 portfolio :
      ID Numbers
      Open LibraryOL1910087M
      ISBN 100660132737
      LC Control Number90115549

      The glacial history of Minnesota is most defined since the onset of the last glacial period, which ended s years the last million years, most of the Midwestern United States and much of Canada were covered at one time or another with an ice continental glacier had a profound effect on the surface features of the area over which it moved. Aylsworth, J.M., and W.W. Shilts, , Glacial features around the Keewatin Ice Divide, Districts of Mackenzie and Keewatin, Northwest Territories. Geological Survey of Canada, Map , 2 sheets, ,, scale.

      The Wisconsin Glacial Episode, also called the Wisconsin glaciation, was the most recent glacial period of the North American ice sheet complex. This advance included the Cordilleran Ice Sheet, which nucleated in the northern North American Cordillera; the Innuitian ice sheet, which extended across the Canadian Arctic Archipelago; the Greenland ice sheet; and the massive Laurentide Ice Sheet. During the last Ice Age, which ended approximat years ago, 32 percent of Earth's land area was covered with glaciers. At present, glaciers cover roughly 10 percent of the land area. A vast majority of that glacial ice overlies much of the continent of Antarctica.

      Living Ice: Understanding Glaciers and Glaciation aims to increase our knowledge and understanding of glacial activity and products. The text is peppered with anecdotes and insights from one of the world's experts on glaciers and is suitable for anyone with a passing knowledge of earth science and an interest in the world of living by: letters to nature 66 NATURE |VOL 4 NOVEMBER Aylsworth, J. M. & Shilts, W. W. Glacial features around the Keewatin ice divide: Districts of Mackenzie and Keewatin. Geol. Surv. Can. Pap. , 1–21 (). Ha¨ttestrand, C. Ribbed moraines in Sweden - distribution pattern and paleoglaciological implica-.


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Glacial features around the Keewatin Ice Divide by J. M. Aylsworth Download PDF EPUB FB2

GLACIAL FEATURES AROUND THE KEEWATIN ICE DIVIDE: DISTRICTS OF MACKENZIE AND KEEWATIN Abstract Four zones that are roughly concentric about the Keewatin Ice Divide are defined by - ment assemblages.

Zone 1, including the Keewatin Ice Divide, is characterized by a lack of eskers or. Glacial features around the Keewatin Ice Divide: districts of Mackenzie and Keewatin.

Glacial Features Around the Keewatin Ice Divide: Districts of MacKenzie and Keewatin. A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of.

This case study focuses on the glacial landscapes of the low-relief tundra of the Canadian Shield of mainland Nunavut, west of Hudson Bay. Having been studied for well over a century, the glacial.

Shareable Link. Use the link below to share a full-text version of this article with your friends and colleagues. Learn more. The relict glacial landscape underneath the Keewatin Ice Divide Zone 1 of Aylsworth and Shilts () reflects protection under the ice divide because of low-velocity basal sliding, and changes in flow velocity as a result of ice divide by: In this respect, much of the Keewatin region, particularly the glacial landscape to the west of the Keewatin Ice Divide (KID) as originally defined by Lee et al.

() has had very little study and integration of landform architectural elements with interpretations of transport mechanisms: the paper by Shilts () is an exception. This study contributes to our understanding of detrital particle transport in a glacial Cited by: 9.

Aylsworth,J. & Shilts,W. Glacial features around the Keewatin ice divide: Districts of Mackenzie and Keewatin. Geol. Surv. Can. Pap.1–21 (). Google Scholar. KID: Keewatin Ice Divide; NQ-LID: Nouveau Quebec-Labrador Ice Divide (after Shilts, ). On the basis of striation and erratic dispersal data, both Bouchard and Martineau () and Klassen and Bolduc () have recognized earlier ice flow centres west and south of the one depicted in Quebec and Labrador on Figure Cited by: 7.

towards the Keewatin ice divide ( km) sampling tills and GF materials •By they had defined the up-ice end of the anomaly train in the vicinity of Lac de Gras, in. superimposed streamlined landforms, and stacked till units, particularly beneath the former Keewatin Ice Divide, is interpreted to be the result of the migration of the main ice divide in the region, by as much as km between ice-flow phases, possibly through much of the Wisconsinan glaciation.

Glacial features around the Keewatin Ice Divide, Northwest Territories. Geological Survey of Canada, Preliminary Mapmap scale 1: 1 Google ScholarCited by: Trip stops (numbered circles), population centers, and physiographic features on and around the southern Fraser Plateau.

Inset shows elevation, non-synchronous Cordilleran Ice Sheet extent at local Last Glacial Maximum (white solid line; Clague and James, ), the extent of the Fraser Plateau (gray solid line; Holland, ), and the location of the main map (white dashed box). large ice mass called the Keewatin Ice Sheet (Tyrrell, ).

This ice sheet was later recognized to consist of a linear ice divide running approximately north-south in the region (Lee et al., ). The Keewatin Divide was part of the larger Laurentide ice sheet which covered much of.

The new Second Edition of Glacial Geology provides a modern, comprehensive summary of glacial geology and geomorphology. It is has been thoroughly revised and updated from the original First Edition.

This book will appeal to all students interested in the landforms and sediments that make up glacial landscapes. The aim of the book is to outline glacial landforms and sediments and to provide.

Keewatin Ice Divide. (Modified from Shilts et al., ) ) suggested a series of landform/sediment zones around the Keewatin Ice Divide. In that paper we suggested that the zonation resulted from the complex interplay between dynamic con- ditions at the glacier's base and geology of the glacier bed.

[No. 51] Surficial geology of southern district of Keewatin and the Keewatin Ice Divide, Northwest Territories / Hulbert A. Lee --[No. 52] Palaeoecology of the marine Pleistocene faunas of southwestern British Columbia --[No. 53] The Oxfordian beds of the Jurassic Fernie group, Alberta and British Columbia / by Hans Frebold, E.

Mountjoy, and. Figure 1: A. Glacial geomorphological map of meltwater features and85 De Geer moraines in central Nunavut, NW of Hudson Bay.

Inset map shows location of study area, Keewatin Ice Divide (KID) (purple line) and previous mapping of eskers (Storrar et al., ).

Black d otted line i ndicates the approximate axis of a re-entrant alongAuthor: Stephen J. Livingstone, Emma L. Lewington, Chris D. Clark, Robert D. Storrar, Andrew J. Sole, Isa. Glacial features at Rosthwaite in Borrowdale, by Ken Bond. Purpose: to view the glacial features near Rosthwaite, with additional short excursions to view Skiddaw Group and BVG exposures.

The Armboth Dyke, Kirkstone Pass, a main ice divide in the last glaciation. File Size: KB. Late glacial advances of the southwestern midcontinent lobes have been traditionally associated with ice coming from the northwestern (Keewatin) sector of the LIS on the basis of geomorphologic features and the composition of surficial tills, but little information is available on Cited by: 7.

Ice age floods [microform]: study of alternatives and environmental assessment: following the pathways of the Glacial Lake Missoula floods / produced by Jones & Jones Jones & Jones Seattle, WA Australian/Harvard Citation.

Jones & Jones. & United States. National Park Service. Aylsworth, J.M. and Shilts, W.W. Glacial features around the Keewatin ice divide, Districts of Mackenzie and Keewatin.

Geological Survey of Canada, Paper 88 - Cited by: Retreat rates in Keewatin were generally between and m yr-1 from 13 to kyr B.P., but increased rapidly between and 9 kyr B.P., followed by a sharp decrease to between and 8 kyr B.P.

(see Fig. 2).The density of eskers at the ice sheet margin broadly matches the retreat rate in both sectors, increasing from to eskers per km of ice margin between 12 and 9 kyr B.P Cited by: