Moraine ridges formed from subglacial frozen‐on sediment slabs and their differentiation from push moraines
Throughout the 1980s the annual cycle of ice‐front activity along the stationary north margin of the ice‐cap Myrdalsjökull, southern Iceland, produced a complex ridge, 4 m high, composed of imbricately stacked slabs of frozen, clast‐paved lodgement till dipping up‐glacier. Further observations in 19...
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crwiley:10.1111/j.1502-3885.1996.tb00835.x 2024-06-09T07:46:10+00:00 Moraine ridges formed from subglacial frozen‐on sediment slabs and their differentiation from push moraines KRÜGER, JOHANNES 1996 http://dx.doi.org/10.1111/j.1502-3885.1996.tb00835.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1996.tb00835.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1996.tb00835.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 25, issue 1, page 57-64 ISSN 0300-9483 1502-3885 journal-article 1996 crwiley https://doi.org/10.1111/j.1502-3885.1996.tb00835.x 2024-05-16T14:27:34Z Throughout the 1980s the annual cycle of ice‐front activity along the stationary north margin of the ice‐cap Myrdalsjökull, southern Iceland, produced a complex ridge, 4 m high, composed of imbricately stacked slabs of frozen, clast‐paved lodgement till dipping up‐glacier. Further observations in 1994 revealed that glaciofluvial processes and associated deposits may be involved in the final stage of ridge production depending on local climate and meltwater drainage pattern. It is concluded that at the margin of Myrdalsjökull the progressive stacking of subglacial frozen‐on sediment slabs to form a moraine ridge is a fundamentally similar mechanism to that involved in the incremental double‐layer model reported from Styggesdalsbreen, southern Norway. This study has also identified internal characteristics which are of potential use for distinguishing between moraine ridges formed by this mechanism and push moraines formed by proglacial thrusting. Article in Journal/Newspaper glacier glacier Ice cap Iceland Wiley Online Library Moraine Ridge ENVELOPE(168.050,168.050,-72.300,-72.300) Norway Boreas 25 1 57 64 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Throughout the 1980s the annual cycle of ice‐front activity along the stationary north margin of the ice‐cap Myrdalsjökull, southern Iceland, produced a complex ridge, 4 m high, composed of imbricately stacked slabs of frozen, clast‐paved lodgement till dipping up‐glacier. Further observations in 1994 revealed that glaciofluvial processes and associated deposits may be involved in the final stage of ridge production depending on local climate and meltwater drainage pattern. It is concluded that at the margin of Myrdalsjökull the progressive stacking of subglacial frozen‐on sediment slabs to form a moraine ridge is a fundamentally similar mechanism to that involved in the incremental double‐layer model reported from Styggesdalsbreen, southern Norway. This study has also identified internal characteristics which are of potential use for distinguishing between moraine ridges formed by this mechanism and push moraines formed by proglacial thrusting. |
format |
Article in Journal/Newspaper |
author |
KRÜGER, JOHANNES |
spellingShingle |
KRÜGER, JOHANNES Moraine ridges formed from subglacial frozen‐on sediment slabs and their differentiation from push moraines |
author_facet |
KRÜGER, JOHANNES |
author_sort |
KRÜGER, JOHANNES |
title |
Moraine ridges formed from subglacial frozen‐on sediment slabs and their differentiation from push moraines |
title_short |
Moraine ridges formed from subglacial frozen‐on sediment slabs and their differentiation from push moraines |
title_full |
Moraine ridges formed from subglacial frozen‐on sediment slabs and their differentiation from push moraines |
title_fullStr |
Moraine ridges formed from subglacial frozen‐on sediment slabs and their differentiation from push moraines |
title_full_unstemmed |
Moraine ridges formed from subglacial frozen‐on sediment slabs and their differentiation from push moraines |
title_sort |
moraine ridges formed from subglacial frozen‐on sediment slabs and their differentiation from push moraines |
publisher |
Wiley |
publishDate |
1996 |
url |
http://dx.doi.org/10.1111/j.1502-3885.1996.tb00835.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1996.tb00835.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1996.tb00835.x |
long_lat |
ENVELOPE(168.050,168.050,-72.300,-72.300) |
geographic |
Moraine Ridge Norway |
geographic_facet |
Moraine Ridge Norway |
genre |
glacier glacier Ice cap Iceland |
genre_facet |
glacier glacier Ice cap Iceland |
op_source |
Boreas volume 25, issue 1, page 57-64 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.1996.tb00835.x |
container_title |
Boreas |
container_volume |
25 |
container_issue |
1 |
container_start_page |
57 |
op_container_end_page |
64 |
_version_ |
1801375919620751360 |