Foliation Pattern of Gulkana Glacier, Alaska Range, Alaska
Abstract Gulkana Glacier, consisting of three major ice streams and two prominent ice falls, displays a complex foliation pattern. In the western ice stream, below Gabriel Ice Fall, the foliation is transverse, developing gradually down-glacier into a distinct series of nested arcs. The arcs are con...
Published in: | Journal of Glaciology |
---|---|
Main Author: | |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Cambridge University Press (CUP)
1965
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1017/s0022143000018700 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000018700 |
id |
crcambridgeupr:10.1017/s0022143000018700 |
---|---|
record_format |
openpolar |
spelling |
crcambridgeupr:10.1017/s0022143000018700 2024-03-03T08:36:17+00:00 Foliation Pattern of Gulkana Glacier, Alaska Range, Alaska Rutter, Nathaniel W. 1965 http://dx.doi.org/10.1017/s0022143000018700 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000018700 en eng Cambridge University Press (CUP) Journal of Glaciology volume 5, issue 41, page 711-718 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1965 crcambridgeupr https://doi.org/10.1017/s0022143000018700 2024-02-08T08:32:56Z Abstract Gulkana Glacier, consisting of three major ice streams and two prominent ice falls, displays a complex foliation pattern. In the western ice stream, below Gabriel Ice Fall, the foliation is transverse, developing gradually down-glacier into a distinct series of nested arcs. The arcs are concave up-glacier with the foliation dipping steeply toward the inside of the arc. A similar pattern is displayed in the eastern ice stream but there the pattern is less distinct with the arcs evolving into a series of nested semi-arcs. The central ice stream is characterized by vertical layers of foliation with a longitudinal strike. Apparently, longitudinal foliation will form in areas with strong compression and shear caused by differential flow velocity such as where two ice streams unite. The foliation that ultimately displays arcuate (or semi-arcuate) patterns originates principally at the base of an ice fall where strong longitudinal compression is present due to the decrease of gradient. Article in Journal/Newspaper alaska range glacier Journal of Glaciology Alaska Cambridge University Press Journal of Glaciology 5 41 711 718 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Rutter, Nathaniel W. Foliation Pattern of Gulkana Glacier, Alaska Range, Alaska |
topic_facet |
Earth-Surface Processes |
description |
Abstract Gulkana Glacier, consisting of three major ice streams and two prominent ice falls, displays a complex foliation pattern. In the western ice stream, below Gabriel Ice Fall, the foliation is transverse, developing gradually down-glacier into a distinct series of nested arcs. The arcs are concave up-glacier with the foliation dipping steeply toward the inside of the arc. A similar pattern is displayed in the eastern ice stream but there the pattern is less distinct with the arcs evolving into a series of nested semi-arcs. The central ice stream is characterized by vertical layers of foliation with a longitudinal strike. Apparently, longitudinal foliation will form in areas with strong compression and shear caused by differential flow velocity such as where two ice streams unite. The foliation that ultimately displays arcuate (or semi-arcuate) patterns originates principally at the base of an ice fall where strong longitudinal compression is present due to the decrease of gradient. |
format |
Article in Journal/Newspaper |
author |
Rutter, Nathaniel W. |
author_facet |
Rutter, Nathaniel W. |
author_sort |
Rutter, Nathaniel W. |
title |
Foliation Pattern of Gulkana Glacier, Alaska Range, Alaska |
title_short |
Foliation Pattern of Gulkana Glacier, Alaska Range, Alaska |
title_full |
Foliation Pattern of Gulkana Glacier, Alaska Range, Alaska |
title_fullStr |
Foliation Pattern of Gulkana Glacier, Alaska Range, Alaska |
title_full_unstemmed |
Foliation Pattern of Gulkana Glacier, Alaska Range, Alaska |
title_sort |
foliation pattern of gulkana glacier, alaska range, alaska |
publisher |
Cambridge University Press (CUP) |
publishDate |
1965 |
url |
http://dx.doi.org/10.1017/s0022143000018700 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000018700 |
genre |
alaska range glacier Journal of Glaciology Alaska |
genre_facet |
alaska range glacier Journal of Glaciology Alaska |
op_source |
Journal of Glaciology volume 5, issue 41, page 711-718 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000018700 |
container_title |
Journal of Glaciology |
container_volume |
5 |
container_issue |
41 |
container_start_page |
711 |
op_container_end_page |
718 |
_version_ |
1792498443110842368 |