Genesis of late pleistocene cross‐valley moraine ridges, South—Central Ulster, Northern Ireland
Abstract Four genetic varieties of ice‐marginal cross‐valley moraine ridge have been identified in south‐central Ulster, Northern Ireland. Type I ridges are flat topped, composed of stratified, water‐lain sediments and formed by coalescence of a series of supraaquatic deltas. Type II ridges are shar...
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crwiley:10.1002/esp.3290100507 2024-06-02T08:08:14+00:00 Genesis of late pleistocene cross‐valley moraine ridges, South—Central Ulster, Northern Ireland Dardis, George F. 1985 http://dx.doi.org/10.1002/esp.3290100507 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fesp.3290100507 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.3290100507 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Earth Surface Processes and Landforms volume 10, issue 5, page 483-495 ISSN 0197-9337 1096-9837 journal-article 1985 crwiley https://doi.org/10.1002/esp.3290100507 2024-05-03T12:04:34Z Abstract Four genetic varieties of ice‐marginal cross‐valley moraine ridge have been identified in south‐central Ulster, Northern Ireland. Type I ridges are flat topped, composed of stratified, water‐lain sediments and formed by coalescence of a series of supraaquatic deltas. Type II ridges are sharp crested, composed of stratified, water‐lain sediments and formed by coalescence of a series of subaquatic deltas. Type III ridges show mixed morphological and sedimentological characteristics of type I and II ridges. Type IV ridges are sharp crested or hummocky, composed of poorly‐sorted and poorly‐stratified water‐lain sediments and formed by coalescence of a series of subaquatic sediment gravity flow cones. Field evidence indicates that cross‐valley moraine ridges in south‐central Ulster were deposited in proglacial lacustrine environments. Ridge type depended principally on (1) the nature of the proglacial bedrock slope; (2) the manner in which meltwater entered the proglacial zone; and (3) ice‐sheet behaviour during deglaciation, particularly within the ice‐sheet terminus zone. Article in Journal/Newspaper Ice Sheet Wiley Online Library Cross Valley ENVELOPE(-56.683,-56.683,-64.258,-64.258) Moraine Ridge ENVELOPE(168.050,168.050,-72.300,-72.300) Earth Surface Processes and Landforms 10 5 483 495 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Four genetic varieties of ice‐marginal cross‐valley moraine ridge have been identified in south‐central Ulster, Northern Ireland. Type I ridges are flat topped, composed of stratified, water‐lain sediments and formed by coalescence of a series of supraaquatic deltas. Type II ridges are sharp crested, composed of stratified, water‐lain sediments and formed by coalescence of a series of subaquatic deltas. Type III ridges show mixed morphological and sedimentological characteristics of type I and II ridges. Type IV ridges are sharp crested or hummocky, composed of poorly‐sorted and poorly‐stratified water‐lain sediments and formed by coalescence of a series of subaquatic sediment gravity flow cones. Field evidence indicates that cross‐valley moraine ridges in south‐central Ulster were deposited in proglacial lacustrine environments. Ridge type depended principally on (1) the nature of the proglacial bedrock slope; (2) the manner in which meltwater entered the proglacial zone; and (3) ice‐sheet behaviour during deglaciation, particularly within the ice‐sheet terminus zone. |
format |
Article in Journal/Newspaper |
author |
Dardis, George F. |
spellingShingle |
Dardis, George F. Genesis of late pleistocene cross‐valley moraine ridges, South—Central Ulster, Northern Ireland |
author_facet |
Dardis, George F. |
author_sort |
Dardis, George F. |
title |
Genesis of late pleistocene cross‐valley moraine ridges, South—Central Ulster, Northern Ireland |
title_short |
Genesis of late pleistocene cross‐valley moraine ridges, South—Central Ulster, Northern Ireland |
title_full |
Genesis of late pleistocene cross‐valley moraine ridges, South—Central Ulster, Northern Ireland |
title_fullStr |
Genesis of late pleistocene cross‐valley moraine ridges, South—Central Ulster, Northern Ireland |
title_full_unstemmed |
Genesis of late pleistocene cross‐valley moraine ridges, South—Central Ulster, Northern Ireland |
title_sort |
genesis of late pleistocene cross‐valley moraine ridges, south—central ulster, northern ireland |
publisher |
Wiley |
publishDate |
1985 |
url |
http://dx.doi.org/10.1002/esp.3290100507 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fesp.3290100507 https://onlinelibrary.wiley.com/doi/pdf/10.1002/esp.3290100507 |
long_lat |
ENVELOPE(-56.683,-56.683,-64.258,-64.258) ENVELOPE(168.050,168.050,-72.300,-72.300) |
geographic |
Cross Valley Moraine Ridge |
geographic_facet |
Cross Valley Moraine Ridge |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Earth Surface Processes and Landforms volume 10, issue 5, page 483-495 ISSN 0197-9337 1096-9837 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/esp.3290100507 |
container_title |
Earth Surface Processes and Landforms |
container_volume |
10 |
container_issue |
5 |
container_start_page |
483 |
op_container_end_page |
495 |
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1800753425413046272 |