Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems
This paper presents a glacial geomorphological map of glacial lineations, ribbed terrain, moraines, meltwater channels (subglacial and ice-marginal/proglacial), eskers, glaciofluvial deposits, ice-contact outwash fans and deltas and abandoned shorelines on the bed of the former Laurentide Ice Sheet...
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ftrepec:oai:RePEc:taf:tjomxx:v:13:y:2017:i:2:p:153-164 2023-05-15T16:40:31+02:00 Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems Robert D. Storrar Stephen J. Livingstone http://hdl.handle.net/10.1080/17445647.2017.1279081 unknown http://hdl.handle.net/10.1080/17445647.2017.1279081 article ftrepec 2020-12-04T13:41:49Z This paper presents a glacial geomorphological map of glacial lineations, ribbed terrain, moraines, meltwater channels (subglacial and ice-marginal/proglacial), eskers, glaciofluvial deposits, ice-contact outwash fans and deltas and abandoned shorelines on the bed of the former Laurentide Ice Sheet in northern Canada. Mapping was compiled from satellite imagery and digital elevation data and landforms were digitised directly into a Geographical Information System. The map reveals a complex glacial history characterised by multiple ice-flow events, including fast-flowing ice streams. Moraines record a series of pauses or re-advances during overall SE retreat towards the Keewatin Ice Divide. The distribution of subglacial meltwater landforms indicates that several distinctive scales and modes of drainage system operated beneath the retreating ice sheet. This includes a large (>100 km) integrated network of meltwater channels, eskers, ice-contact outwash fans and deltas and glaciofluvial deposits that originates at the northern edge of Aberdeen Lake. The map comprises zone 66 of the Canadian National Topographic System, which encompasses an area of 160,000 km2. It is presented at a scale of 1:500,000 and is designed to be printed at A0 size. Article in Journal/Newspaper Ice Sheet Keewatin Kivalliq Nunavut RePEc (Research Papers in Economics) Aberdeen Lake ENVELOPE(-99.000,-99.000,64.500,64.500) Canada Nunavut |
institution |
Open Polar |
collection |
RePEc (Research Papers in Economics) |
op_collection_id |
ftrepec |
language |
unknown |
description |
This paper presents a glacial geomorphological map of glacial lineations, ribbed terrain, moraines, meltwater channels (subglacial and ice-marginal/proglacial), eskers, glaciofluvial deposits, ice-contact outwash fans and deltas and abandoned shorelines on the bed of the former Laurentide Ice Sheet in northern Canada. Mapping was compiled from satellite imagery and digital elevation data and landforms were digitised directly into a Geographical Information System. The map reveals a complex glacial history characterised by multiple ice-flow events, including fast-flowing ice streams. Moraines record a series of pauses or re-advances during overall SE retreat towards the Keewatin Ice Divide. The distribution of subglacial meltwater landforms indicates that several distinctive scales and modes of drainage system operated beneath the retreating ice sheet. This includes a large (>100 km) integrated network of meltwater channels, eskers, ice-contact outwash fans and deltas and glaciofluvial deposits that originates at the northern edge of Aberdeen Lake. The map comprises zone 66 of the Canadian National Topographic System, which encompasses an area of 160,000 km2. It is presented at a scale of 1:500,000 and is designed to be printed at A0 size. |
format |
Article in Journal/Newspaper |
author |
Robert D. Storrar Stephen J. Livingstone |
spellingShingle |
Robert D. Storrar Stephen J. Livingstone Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems |
author_facet |
Robert D. Storrar Stephen J. Livingstone |
author_sort |
Robert D. Storrar |
title |
Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems |
title_short |
Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems |
title_full |
Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems |
title_fullStr |
Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems |
title_full_unstemmed |
Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems |
title_sort |
glacial geomorphology of the northern kivalliq region, nunavut, canada, with an emphasis on meltwater drainage systems |
url |
http://hdl.handle.net/10.1080/17445647.2017.1279081 |
long_lat |
ENVELOPE(-99.000,-99.000,64.500,64.500) |
geographic |
Aberdeen Lake Canada Nunavut |
geographic_facet |
Aberdeen Lake Canada Nunavut |
genre |
Ice Sheet Keewatin Kivalliq Nunavut |
genre_facet |
Ice Sheet Keewatin Kivalliq Nunavut |
op_relation |
http://hdl.handle.net/10.1080/17445647.2017.1279081 |
_version_ |
1766030915592519680 |