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.

[img]
Preview
PDF
Storrar & Livingstone (2017) JoM.pdf - Published Version
Available under License Creative Commons Attribution.

Download (6MB) | Preview
Official URL: http://www.tandfonline.com/doi/full/10.1080/174456...
Link to published version:: 10.1080/17445647.2017.1279081

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: Development and Society > Natural and Build Environment
Identification Number: 10.1080/17445647.2017.1279081
Depositing User: Robert Storrar
Date Deposited: 25 Jan 2017 10:07
Last Modified: 14 Jun 2017 17:08
URI: http://shura.shu.ac.uk/id/eprint/14169

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year

View more statistics