Pore-water controlled grain fracturing as an indicator for subglacial shearing in tills
Abstract Genetic classification of glacial deposits still proves to be highly controversial. In many cases, it remains unclear whether a particular sediment has been sub-glacially deformed. In the present paper it is suggested that micromorphological research is helpful where current techniques fail...
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Language: | English |
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Cambridge University Press (CUP)
1997
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Online Access: | http://dx.doi.org/10.1017/s0022143000035036 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000035036 |
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crcambridgeupr:10.1017/s0022143000035036 2024-03-03T08:46:00+00:00 Pore-water controlled grain fracturing as an indicator for subglacial shearing in tills Hiemstra, John F. Van Der Meer, Jaap J. M. 1997 http://dx.doi.org/10.1017/s0022143000035036 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000035036 en eng Cambridge University Press (CUP) Journal of Glaciology volume 43, issue 145, page 446-454 ISSN 0022-1430 1727-5652 Earth-Surface Processes journal-article 1997 crcambridgeupr https://doi.org/10.1017/s0022143000035036 2024-02-08T08:36:10Z Abstract Genetic classification of glacial deposits still proves to be highly controversial. In many cases, it remains unclear whether a particular sediment has been sub-glacially deformed. In the present paper it is suggested that micromorphological research is helpful where current techniques fail to lead to unambiguous interpretations. It is argued that the occurrence of fractured grains in glacial sediments is indicative of subglacial shearing and that such grains may be used as diagnostic evidence of glaciotectonism. Deformational mechanisms associated with the fracturing process are outlined and explained, using a series of thin sections from Wijnjewoude, The Netherlands. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 43 145 446 454 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Earth-Surface Processes |
spellingShingle |
Earth-Surface Processes Hiemstra, John F. Van Der Meer, Jaap J. M. Pore-water controlled grain fracturing as an indicator for subglacial shearing in tills |
topic_facet |
Earth-Surface Processes |
description |
Abstract Genetic classification of glacial deposits still proves to be highly controversial. In many cases, it remains unclear whether a particular sediment has been sub-glacially deformed. In the present paper it is suggested that micromorphological research is helpful where current techniques fail to lead to unambiguous interpretations. It is argued that the occurrence of fractured grains in glacial sediments is indicative of subglacial shearing and that such grains may be used as diagnostic evidence of glaciotectonism. Deformational mechanisms associated with the fracturing process are outlined and explained, using a series of thin sections from Wijnjewoude, The Netherlands. |
format |
Article in Journal/Newspaper |
author |
Hiemstra, John F. Van Der Meer, Jaap J. M. |
author_facet |
Hiemstra, John F. Van Der Meer, Jaap J. M. |
author_sort |
Hiemstra, John F. |
title |
Pore-water controlled grain fracturing as an indicator for subglacial shearing in tills |
title_short |
Pore-water controlled grain fracturing as an indicator for subglacial shearing in tills |
title_full |
Pore-water controlled grain fracturing as an indicator for subglacial shearing in tills |
title_fullStr |
Pore-water controlled grain fracturing as an indicator for subglacial shearing in tills |
title_full_unstemmed |
Pore-water controlled grain fracturing as an indicator for subglacial shearing in tills |
title_sort |
pore-water controlled grain fracturing as an indicator for subglacial shearing in tills |
publisher |
Cambridge University Press (CUP) |
publishDate |
1997 |
url |
http://dx.doi.org/10.1017/s0022143000035036 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143000035036 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology volume 43, issue 145, page 446-454 ISSN 0022-1430 1727-5652 |
op_doi |
https://doi.org/10.1017/s0022143000035036 |
container_title |
Journal of Glaciology |
container_volume |
43 |
container_issue |
145 |
container_start_page |
446 |
op_container_end_page |
454 |
_version_ |
1792501785444745216 |