Glacial landscape evolution in the Uummannaq region, West Greenland.
The Uummannaq region is a mosaic of glacial landsystems, consistent with hypothesized landscape distribution resulting from variations in subglacial thermal regime. The region is dominated by selective linear erosion that has spatially and altitudinally partitioned the landscape. Low altitude areas...
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John Wiley & Sons
2016
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Online Access: | http://dro.dur.ac.uk/17797/ http://dro.dur.ac.uk/17797/1/17797.pdf https://doi.org/10.1111/bor.12150 |
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ftunivdurham:oai:dro.dur.ac.uk.OAI2:17797 2023-05-15T16:21:31+02:00 Glacial landscape evolution in the Uummannaq region, West Greenland. Lane, T.P. Roberts, D.H. Ó Cofaigh, C. Rea, B.R. Vieli, A. 2016-04-01 application/pdf http://dro.dur.ac.uk/17797/ http://dro.dur.ac.uk/17797/1/17797.pdf https://doi.org/10.1111/bor.12150 unknown John Wiley & Sons dro:17797 issn:0300-9483 issn: 1502-3885 doi:10.1111/bor.12150 http://dro.dur.ac.uk/17797/ http://dx.doi.org/10.1111/bor.12150 http://dro.dur.ac.uk/17797/1/17797.pdf This is the accepted version of the following article: Lane, T. P., Roberts, D. H., Ó Cofaigh, C., Rea, B. R. & Vieli, A.: Glacial landscape evolution in the Uummannaq region, West Greenland. Boreas, 45(2): 220-234, which has been published in final form at http://dx.doi.org/10.1111/bor.12150. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving. Boreas, 2016, Vol.45(2), pp.220-234 [Peer Reviewed Journal] Article PeerReviewed 2016 ftunivdurham https://doi.org/10.1111/bor.12150 2020-06-11T22:23:23Z The Uummannaq region is a mosaic of glacial landsystems, consistent with hypothesized landscape distribution resulting from variations in subglacial thermal regime. The region is dominated by selective linear erosion that has spatially and altitudinally partitioned the landscape. Low altitude areas are dominated by glacial scour and higher elevations are dominated by plateaux or mountain valley and cirque glaciers. The appearance and nature of each landscape type varies locally with altitude and latitude, as a function of bedrock geology and average glacial conditions. Selective linear erosion has been a primary control on landscape distribution throughout Uummannaq, leading to plateau formation and the growth of a coalescent fjord system in the Uummannaq region. This has allowed the development of the Uummannaq ice stream's (UIS) onset zone during glacial periods. Fjord development has been enhanced by a downstream change in geology to less-resistant lithologies, increasing erosional efficiency and allowing a single glacial channel to develop, encouraging glacier convergence and the initiation of ice streaming. The landscape has been affected by several periods of regional uplift from 33 Ma to present, and has been subject to subsequent fluvial and glacial erosion. Uplift has removed surfaces from the impact of widespread warm-based glaciation, leaving them as relict landsurfaces. The result of this is a regional altitude-dependent continuum of glacial modification, with extreme differences in erosion between high and low elevation surfaces. This study indicates that processes of long-term uplift, glacial erosion/protection and spatial variability in erosion intensity have produced a highly partitioned landscape. Article in Journal/Newspaper glacier Greenland Uummannaq Durham University: Durham Research Online Greenland Uis ENVELOPE(141.975,141.975,60.184,60.184) Boreas 45 2 220 234 |
institution |
Open Polar |
collection |
Durham University: Durham Research Online |
op_collection_id |
ftunivdurham |
language |
unknown |
description |
The Uummannaq region is a mosaic of glacial landsystems, consistent with hypothesized landscape distribution resulting from variations in subglacial thermal regime. The region is dominated by selective linear erosion that has spatially and altitudinally partitioned the landscape. Low altitude areas are dominated by glacial scour and higher elevations are dominated by plateaux or mountain valley and cirque glaciers. The appearance and nature of each landscape type varies locally with altitude and latitude, as a function of bedrock geology and average glacial conditions. Selective linear erosion has been a primary control on landscape distribution throughout Uummannaq, leading to plateau formation and the growth of a coalescent fjord system in the Uummannaq region. This has allowed the development of the Uummannaq ice stream's (UIS) onset zone during glacial periods. Fjord development has been enhanced by a downstream change in geology to less-resistant lithologies, increasing erosional efficiency and allowing a single glacial channel to develop, encouraging glacier convergence and the initiation of ice streaming. The landscape has been affected by several periods of regional uplift from 33 Ma to present, and has been subject to subsequent fluvial and glacial erosion. Uplift has removed surfaces from the impact of widespread warm-based glaciation, leaving them as relict landsurfaces. The result of this is a regional altitude-dependent continuum of glacial modification, with extreme differences in erosion between high and low elevation surfaces. This study indicates that processes of long-term uplift, glacial erosion/protection and spatial variability in erosion intensity have produced a highly partitioned landscape. |
format |
Article in Journal/Newspaper |
author |
Lane, T.P. Roberts, D.H. Ó Cofaigh, C. Rea, B.R. Vieli, A. |
spellingShingle |
Lane, T.P. Roberts, D.H. Ó Cofaigh, C. Rea, B.R. Vieli, A. Glacial landscape evolution in the Uummannaq region, West Greenland. |
author_facet |
Lane, T.P. Roberts, D.H. Ó Cofaigh, C. Rea, B.R. Vieli, A. |
author_sort |
Lane, T.P. |
title |
Glacial landscape evolution in the Uummannaq region, West Greenland. |
title_short |
Glacial landscape evolution in the Uummannaq region, West Greenland. |
title_full |
Glacial landscape evolution in the Uummannaq region, West Greenland. |
title_fullStr |
Glacial landscape evolution in the Uummannaq region, West Greenland. |
title_full_unstemmed |
Glacial landscape evolution in the Uummannaq region, West Greenland. |
title_sort |
glacial landscape evolution in the uummannaq region, west greenland. |
publisher |
John Wiley & Sons |
publishDate |
2016 |
url |
http://dro.dur.ac.uk/17797/ http://dro.dur.ac.uk/17797/1/17797.pdf https://doi.org/10.1111/bor.12150 |
long_lat |
ENVELOPE(141.975,141.975,60.184,60.184) |
geographic |
Greenland Uis |
geographic_facet |
Greenland Uis |
genre |
glacier Greenland Uummannaq |
genre_facet |
glacier Greenland Uummannaq |
op_source |
Boreas, 2016, Vol.45(2), pp.220-234 [Peer Reviewed Journal] |
op_relation |
dro:17797 issn:0300-9483 issn: 1502-3885 doi:10.1111/bor.12150 http://dro.dur.ac.uk/17797/ http://dx.doi.org/10.1111/bor.12150 http://dro.dur.ac.uk/17797/1/17797.pdf |
op_rights |
This is the accepted version of the following article: Lane, T. P., Roberts, D. H., Ó Cofaigh, C., Rea, B. R. & Vieli, A.: Glacial landscape evolution in the Uummannaq region, West Greenland. Boreas, 45(2): 220-234, which has been published in final form at http://dx.doi.org/10.1111/bor.12150. This article may be used for non-commercial purposes in accordance With Wiley Terms and Conditions for self-archiving. |
op_doi |
https://doi.org/10.1111/bor.12150 |
container_title |
Boreas |
container_volume |
45 |
container_issue |
2 |
container_start_page |
220 |
op_container_end_page |
234 |
_version_ |
1766009530009780224 |