Stone roundness of moraines connected with Taku Glacier, southeastern Alaska
The roundness and flatness (Cailleux's indices) of granodioritic stones from three different moraines in contact with Taku Glacier were measured. Mean roundness of talus material was 60, of late Wisconsin moraine material 240 and of push moraine material 370. Flatness of stones decreased in the...
Published in: | Bulletin of the Geological Society of Finland |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Geological Society of Finland
1976
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Online Access: | https://doi.org/10.17741/bgsf/48.1-2.008 https://doaj.org/article/e09042e0ff7e4d0d9425c4dbb9ca0fa1 |
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ftdoajarticles:oai:doaj.org/article:e09042e0ff7e4d0d9425c4dbb9ca0fa1 2023-05-15T16:20:28+02:00 Stone roundness of moraines connected with Taku Glacier, southeastern Alaska M. Seppälä 1976-12-01T00:00:00Z https://doi.org/10.17741/bgsf/48.1-2.008 https://doaj.org/article/e09042e0ff7e4d0d9425c4dbb9ca0fa1 EN eng Geological Society of Finland http://www.geologinenseura.fi/bulletin/Volume48/sgs_bt_048_1_2_pages_087_094.pdf https://doaj.org/toc/0367-5211 https://doaj.org/toc/1799-4632 doi:10.17741/bgsf/48.1-2.008 0367-5211 1799-4632 https://doaj.org/article/e09042e0ff7e4d0d9425c4dbb9ca0fa1 Bulletin of the Geological Society of Finland, Vol 48, Iss 1-2, Pp 87-94 (1976) Geology QE1-996.5 article 1976 ftdoajarticles https://doi.org/10.17741/bgsf/48.1-2.008 2022-12-31T08:47:00Z The roundness and flatness (Cailleux's indices) of granodioritic stones from three different moraines in contact with Taku Glacier were measured. Mean roundness of talus material was 60, of late Wisconsin moraine material 240 and of push moraine material 370. Flatness of stones decreased in the same order. Results were statistically evaluated and the differences were identified also by analysis of variance. By comparing the stone size and roundness it was concluded that the original forms of stones determine their final forms. Flat and small stones cannot be rounded as easely as cubical and bigger blocks by glacial and glaciofluvial processes. Article in Journal/Newspaper glacier Alaska Directory of Open Access Journals: DOAJ Articles Taku ENVELOPE(-133.854,-133.854,59.633,59.633) Bulletin of the Geological Society of Finland 48 1-2 87 94 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Geology QE1-996.5 |
spellingShingle |
Geology QE1-996.5 M. Seppälä Stone roundness of moraines connected with Taku Glacier, southeastern Alaska |
topic_facet |
Geology QE1-996.5 |
description |
The roundness and flatness (Cailleux's indices) of granodioritic stones from three different moraines in contact with Taku Glacier were measured. Mean roundness of talus material was 60, of late Wisconsin moraine material 240 and of push moraine material 370. Flatness of stones decreased in the same order. Results were statistically evaluated and the differences were identified also by analysis of variance. By comparing the stone size and roundness it was concluded that the original forms of stones determine their final forms. Flat and small stones cannot be rounded as easely as cubical and bigger blocks by glacial and glaciofluvial processes. |
format |
Article in Journal/Newspaper |
author |
M. Seppälä |
author_facet |
M. Seppälä |
author_sort |
M. Seppälä |
title |
Stone roundness of moraines connected with Taku Glacier, southeastern Alaska |
title_short |
Stone roundness of moraines connected with Taku Glacier, southeastern Alaska |
title_full |
Stone roundness of moraines connected with Taku Glacier, southeastern Alaska |
title_fullStr |
Stone roundness of moraines connected with Taku Glacier, southeastern Alaska |
title_full_unstemmed |
Stone roundness of moraines connected with Taku Glacier, southeastern Alaska |
title_sort |
stone roundness of moraines connected with taku glacier, southeastern alaska |
publisher |
Geological Society of Finland |
publishDate |
1976 |
url |
https://doi.org/10.17741/bgsf/48.1-2.008 https://doaj.org/article/e09042e0ff7e4d0d9425c4dbb9ca0fa1 |
long_lat |
ENVELOPE(-133.854,-133.854,59.633,59.633) |
geographic |
Taku |
geographic_facet |
Taku |
genre |
glacier Alaska |
genre_facet |
glacier Alaska |
op_source |
Bulletin of the Geological Society of Finland, Vol 48, Iss 1-2, Pp 87-94 (1976) |
op_relation |
http://www.geologinenseura.fi/bulletin/Volume48/sgs_bt_048_1_2_pages_087_094.pdf https://doaj.org/toc/0367-5211 https://doaj.org/toc/1799-4632 doi:10.17741/bgsf/48.1-2.008 0367-5211 1799-4632 https://doaj.org/article/e09042e0ff7e4d0d9425c4dbb9ca0fa1 |
op_doi |
https://doi.org/10.17741/bgsf/48.1-2.008 |
container_title |
Bulletin of the Geological Society of Finland |
container_volume |
48 |
container_issue |
1-2 |
container_start_page |
87 |
op_container_end_page |
94 |
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1766008387270606848 |