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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Bibliographic Details
Main Authors: Storrar, Robert D., Livingstone, Stephen J.
Format: Dataset
Language:unknown
Published: Taylor & Francis 2017
Subjects:
Space Science
Medicine
Neuroscience
Pharmacology
59999 Environmental Sciences not elsewhere classified
FOS Earth and related environmental sciences
Ecology
FOS Biological sciences
20199 Astronomical and Space Sciences not elsewhere classified
FOS Physical sciences
Sociology
FOS Sociology
Aberdeen Lake
Canada
Nunavut
Ice Sheet
Keewatin
Kivalliq
Online Access:https://dx.doi.org/10.6084/m9.figshare.4580755
https://tandf.figshare.com/articles/dataset/Glacial_geomorphology_of_the_northern_Kivalliq_region_Nunavut_Canada_with_an_emphasis_on_meltwater_drainage_systems/4580755/1
Description
Summary: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 km 2 . It is presented at a scale of 1:500,000 and is designed to be printed at A0 size.

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