GLACIAL FEATURES OF TANQUARY FIORD AND ADJOINING AREAS OF NORTHERN ELLESMERE ISLAND, N. W. T.
The results of the present study support the conclusion that the former ice cover of northern Ellesmere Island was very much more extensive than the present, although the age of maximum glaciation is not known. In the Tanquary Fiord area the conclusion is based on: bathymetric data indicating consid...
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ftdtic:AD0689115 2023-05-15T16:05:55+02:00 GLACIAL FEATURES OF TANQUARY FIORD AND ADJOINING AREAS OF NORTHERN ELLESMERE ISLAND, N. W. T. Hattersley-Smith,G. DEFENCE RESEARCH TELECOMMUNICATIONS ESTABLISHMENT OTTAWA (ONTARIO) 1968-12-03 text/html http://www.dtic.mil/docs/citations/AD0689115 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0689115 en eng http://www.dtic.mil/docs/citations/AD0689115 Availability: Pub. in Jnl. of Glaciology, v8 n52 p23-50 1969. No copies furnished. DTIC AND NTIS Snow Ice and Permafrost (*GLACIERS ELLESMERE ISLAND) ICE EROSION RIVERS TERRAIN DRAINAGE THICKNESS DEPOSITS ROCK SILT MOUNTAINS LAKES STRATIGRAPHY BATHYTHERMOGRAPH DATA CANADA MORAINES PEAT TANQUARY FIORD(CANADA) Text 1968 ftdtic 2016-02-18T22:06:51Z The results of the present study support the conclusion that the former ice cover of northern Ellesmere Island was very much more extensive than the present, although the age of maximum glaciation is not known. In the Tanquary Fiord area the conclusion is based on: bathymetric data indicating considerable overdeepening of the fiords; morphology of the main valleys; and the presence of moraines, erratics and glacial lake deposits at high levels. Tanquary Fiord became free of glacial ice at least 6,500 years ago and peat was forming in the valleys by this time. A long period of river erosion followed the main retreat of the ice. Subsequently, and within the last 4,000 years, glaciers advanced to re-occupy V-shaped valleys, and at the same time small ice caps were probably regenerated. In the last 900 years, however, there has been little change in the terminal position of most of the major glaciers, which appear to be advancing slightly, although in the last 40 years the side glaciers have receded from well-marked terminal moraines. (Author) Text Ellesmere Island glacier* Ice permafrost Tanquary Fiord Defense Technical Information Center: DTIC Technical Reports database Canada Ellesmere Island Glacial Lake ENVELOPE(-129.463,-129.463,58.259,58.259) Tanquary Fiord ENVELOPE(-79.747,-79.747,81.085,81.085) |
institution |
Open Polar |
collection |
Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Snow Ice and Permafrost (*GLACIERS ELLESMERE ISLAND) ICE EROSION RIVERS TERRAIN DRAINAGE THICKNESS DEPOSITS ROCK SILT MOUNTAINS LAKES STRATIGRAPHY BATHYTHERMOGRAPH DATA CANADA MORAINES PEAT TANQUARY FIORD(CANADA) |
spellingShingle |
Snow Ice and Permafrost (*GLACIERS ELLESMERE ISLAND) ICE EROSION RIVERS TERRAIN DRAINAGE THICKNESS DEPOSITS ROCK SILT MOUNTAINS LAKES STRATIGRAPHY BATHYTHERMOGRAPH DATA CANADA MORAINES PEAT TANQUARY FIORD(CANADA) Hattersley-Smith,G. GLACIAL FEATURES OF TANQUARY FIORD AND ADJOINING AREAS OF NORTHERN ELLESMERE ISLAND, N. W. T. |
topic_facet |
Snow Ice and Permafrost (*GLACIERS ELLESMERE ISLAND) ICE EROSION RIVERS TERRAIN DRAINAGE THICKNESS DEPOSITS ROCK SILT MOUNTAINS LAKES STRATIGRAPHY BATHYTHERMOGRAPH DATA CANADA MORAINES PEAT TANQUARY FIORD(CANADA) |
description |
The results of the present study support the conclusion that the former ice cover of northern Ellesmere Island was very much more extensive than the present, although the age of maximum glaciation is not known. In the Tanquary Fiord area the conclusion is based on: bathymetric data indicating considerable overdeepening of the fiords; morphology of the main valleys; and the presence of moraines, erratics and glacial lake deposits at high levels. Tanquary Fiord became free of glacial ice at least 6,500 years ago and peat was forming in the valleys by this time. A long period of river erosion followed the main retreat of the ice. Subsequently, and within the last 4,000 years, glaciers advanced to re-occupy V-shaped valleys, and at the same time small ice caps were probably regenerated. In the last 900 years, however, there has been little change in the terminal position of most of the major glaciers, which appear to be advancing slightly, although in the last 40 years the side glaciers have receded from well-marked terminal moraines. (Author) |
author2 |
DEFENCE RESEARCH TELECOMMUNICATIONS ESTABLISHMENT OTTAWA (ONTARIO) |
format |
Text |
author |
Hattersley-Smith,G. |
author_facet |
Hattersley-Smith,G. |
author_sort |
Hattersley-Smith,G. |
title |
GLACIAL FEATURES OF TANQUARY FIORD AND ADJOINING AREAS OF NORTHERN ELLESMERE ISLAND, N. W. T. |
title_short |
GLACIAL FEATURES OF TANQUARY FIORD AND ADJOINING AREAS OF NORTHERN ELLESMERE ISLAND, N. W. T. |
title_full |
GLACIAL FEATURES OF TANQUARY FIORD AND ADJOINING AREAS OF NORTHERN ELLESMERE ISLAND, N. W. T. |
title_fullStr |
GLACIAL FEATURES OF TANQUARY FIORD AND ADJOINING AREAS OF NORTHERN ELLESMERE ISLAND, N. W. T. |
title_full_unstemmed |
GLACIAL FEATURES OF TANQUARY FIORD AND ADJOINING AREAS OF NORTHERN ELLESMERE ISLAND, N. W. T. |
title_sort |
glacial features of tanquary fiord and adjoining areas of northern ellesmere island, n. w. t. |
publishDate |
1968 |
url |
http://www.dtic.mil/docs/citations/AD0689115 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0689115 |
long_lat |
ENVELOPE(-129.463,-129.463,58.259,58.259) ENVELOPE(-79.747,-79.747,81.085,81.085) |
geographic |
Canada Ellesmere Island Glacial Lake Tanquary Fiord |
geographic_facet |
Canada Ellesmere Island Glacial Lake Tanquary Fiord |
genre |
Ellesmere Island glacier* Ice permafrost Tanquary Fiord |
genre_facet |
Ellesmere Island glacier* Ice permafrost Tanquary Fiord |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0689115 |
op_rights |
Availability: Pub. in Jnl. of Glaciology, v8 n52 p23-50 1969. No copies furnished. |
_version_ |
1766401832689598464 |