An investigation of subglacial processes at the microscale from Briksdalsbreen, Norway
Abstract The subglacial processes at Briksdalsbreen, Norway, are examined by a combination of sedimentology, thin section and scanning electron microscope (SEM) analysis of till samples from an exposed subglacial surface and from beneath the glacier. Studies of a fluted surface indicate that subglac...
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crwiley:10.1111/j.1365-3091.2005.00758.x 2024-06-02T08:07:06+00:00 An investigation of subglacial processes at the microscale from Briksdalsbreen, Norway HART, JANE K. 2006 http://dx.doi.org/10.1111/j.1365-3091.2005.00758.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3091.2005.00758.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3091.2005.00758.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Sedimentology volume 53, issue 1, page 125-146 ISSN 0037-0746 1365-3091 journal-article 2006 crwiley https://doi.org/10.1111/j.1365-3091.2005.00758.x 2024-05-03T11:02:44Z Abstract The subglacial processes at Briksdalsbreen, Norway, are examined by a combination of sedimentology, thin section and scanning electron microscope (SEM) analysis of till samples from an exposed subglacial surface and from beneath the glacier. Studies of a fluted surface indicate that subglacial deformation is occurring on a field scale with flutes forming behind most clasts 0·6 m high. At the thin section scale (0·014–2·0 mm) it is seen that deformation is by rotation and attenuation and is dependent on till texture. At the SEM scale (0·1–0·4 mm) it is seen that erosion is controlled by abrasion and percussion which produces distinct grain ‘styles’ as part of an erosional continuum. Overall it is shown that rotation and attenuation is a dominant process at all scales and that the clast interactions associated with different scale perturbations within the shear zone control erosion and deposition, as well as landform and fabric production. Article in Journal/Newspaper glacier Wiley Online Library Norway Sedimentology 53 1 125 146 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The subglacial processes at Briksdalsbreen, Norway, are examined by a combination of sedimentology, thin section and scanning electron microscope (SEM) analysis of till samples from an exposed subglacial surface and from beneath the glacier. Studies of a fluted surface indicate that subglacial deformation is occurring on a field scale with flutes forming behind most clasts 0·6 m high. At the thin section scale (0·014–2·0 mm) it is seen that deformation is by rotation and attenuation and is dependent on till texture. At the SEM scale (0·1–0·4 mm) it is seen that erosion is controlled by abrasion and percussion which produces distinct grain ‘styles’ as part of an erosional continuum. Overall it is shown that rotation and attenuation is a dominant process at all scales and that the clast interactions associated with different scale perturbations within the shear zone control erosion and deposition, as well as landform and fabric production. |
format |
Article in Journal/Newspaper |
author |
HART, JANE K. |
spellingShingle |
HART, JANE K. An investigation of subglacial processes at the microscale from Briksdalsbreen, Norway |
author_facet |
HART, JANE K. |
author_sort |
HART, JANE K. |
title |
An investigation of subglacial processes at the microscale from Briksdalsbreen, Norway |
title_short |
An investigation of subglacial processes at the microscale from Briksdalsbreen, Norway |
title_full |
An investigation of subglacial processes at the microscale from Briksdalsbreen, Norway |
title_fullStr |
An investigation of subglacial processes at the microscale from Briksdalsbreen, Norway |
title_full_unstemmed |
An investigation of subglacial processes at the microscale from Briksdalsbreen, Norway |
title_sort |
investigation of subglacial processes at the microscale from briksdalsbreen, norway |
publisher |
Wiley |
publishDate |
2006 |
url |
http://dx.doi.org/10.1111/j.1365-3091.2005.00758.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-3091.2005.00758.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-3091.2005.00758.x |
geographic |
Norway |
geographic_facet |
Norway |
genre |
glacier |
genre_facet |
glacier |
op_source |
Sedimentology volume 53, issue 1, page 125-146 ISSN 0037-0746 1365-3091 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-3091.2005.00758.x |
container_title |
Sedimentology |
container_volume |
53 |
container_issue |
1 |
container_start_page |
125 |
op_container_end_page |
146 |
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1800752112298098688 |