Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems

STORRAR, Robert and LIVINGSTONE, Stephen (2017). Glacial geomorphology of the northern Kivalliq region, Nunavut, Canada, with an emphasis on meltwater drainage systems. Journal of Maps, 13 (2), 153-164.

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Official URL: http://www.tandfonline.com/doi/full/10.1080/174456...
Link to published version:: https://doi.org/10.1080/17445647.2017.1279081
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    Abstract

    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.

    Item Type: Article
    Departments - Does NOT include content added after October 2018: Faculty of Social Sciences and Humanities > Department of Natural and Build Environment
    Identification Number: https://doi.org/10.1080/17445647.2017.1279081
    Page Range: 153-164
    Depositing User: Robert Storrar
    Date Deposited: 25 Jan 2017 10:07
    Last Modified: 25 Jun 2020 09:48
    URI: http://shura.shu.ac.uk/id/eprint/14169

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