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Surging glacier landsystem of Tungnaárjökull, Iceland

Evans, D.J.A.; Twigg, D.R.; Rea, B.R.; Orton, C.

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Authors

D.R. Twigg

B.R. Rea

C. Orton



Abstract

A 1:30,000 scale map of the snout and proglacial landscape of the surging Icelandic glacier Tungnaarjokull, based upon aerial photography from 1995, immediately after a surge, allows an assessment of the spatial variability in landform-sediment imprints of catastrophic glacier advance across upland bedrock ridges. The ice-margin parallel alignment of the bedrock ridges locally strongly directs proglacial meltwater drainage and initiates strong compression in the ice during surging, resulting in the development of prominent ice-cored hummocky moraine composed of glacifluvial sediment. Diagnostic surge landforms elsewhere on the foreland include thrust block and push moraines, overridden ice-cored thrust block moraines, crevasse squeeze ridges, long flutings, hummocky moraine and ice-cored, pitted outwash.

Citation

Evans, D., Twigg, D., Rea, B., & Orton, C. (2009). Surging glacier landsystem of Tungnaárjökull, Iceland. Journal of Maps, 2009, 134-151. https://doi.org/10.4113/jom.2009.1064

Journal Article Type Article
Publication Date Jan 1, 2009
Deposit Date May 21, 2010
Publicly Available Date Jun 2, 2010
Journal Journal of Maps
Electronic ISSN 1744-5647
Publisher Taylor and Francis Group
Peer Reviewed Peer Reviewed
Volume 2009
Pages 134-151
DOI https://doi.org/10.4113/jom.2009.1064
Public URL https://durham-repository.worktribe.com/output/1521677

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