Active ice‐sheet deglaciation and ice‐dammed lakes in the northern Cairngorm Mountains, Scotland
Mapping of ice‐marginal and glaciolacustrine deposits in the northern Cairngorm Mountains allows the nature of deglaciation following the Last Glacial Maximum (c.18 000 BP) to be reinterpreted. Two ice‐dammed lakes were ponded between the Glenmore lobe of the Scottish ice sheet and local glaciers dr...
Published in: | Boreas |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Wiley
1998
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1111/j.1502-3885.1998.tb01423.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1998.tb01423.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1998.tb01423.x |
id |
crwiley:10.1111/j.1502-3885.1998.tb01423.x |
---|---|
record_format |
openpolar |
spelling |
crwiley:10.1111/j.1502-3885.1998.tb01423.x 2024-06-23T07:53:46+00:00 Active ice‐sheet deglaciation and ice‐dammed lakes in the northern Cairngorm Mountains, Scotland BRAZIER, VANESSA KIRKBRIDE, MARTIN P. GORDON, JOHN E. 1998 http://dx.doi.org/10.1111/j.1502-3885.1998.tb01423.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1998.tb01423.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1998.tb01423.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 27, issue 4, page 297-310 ISSN 0300-9483 1502-3885 journal-article 1998 crwiley https://doi.org/10.1111/j.1502-3885.1998.tb01423.x 2024-06-13T04:20:28Z Mapping of ice‐marginal and glaciolacustrine deposits in the northern Cairngorm Mountains allows the nature of deglaciation following the Last Glacial Maximum (c.18 000 BP) to be reinterpreted. Two ice‐dammed lakes were ponded between the Glenmore lobe of the Scottish ice sheet and local glaciers draining northwards from the Cairngorm Mountains. Delta progradation from the southern end of each lake reflects dominant meltwater sources and glacio‐hydrological gradients. Sediment facies representing subaqueous mass‐flow deposits, lakebottom rhythmites, lower and upper foresets and topsets are associated with prograding delta fronts. Moraines show that the lakes were ice dammed at both ends, evidence that active glaciers existed in the Cairngorm Mountains while ice was retreating from Strath Spey, and that deglaciation was punctuated by readvances of the ice margin. These results indicate that an ice‐stagnation model of deglaciation is invalid for most of the duration of ice wastage, but instead support an active‐retreat hypothesis with multiple, climatically forced readvances. Article in Journal/Newspaper Ice Sheet Wiley Online Library Boreas 27 4 297 310 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Mapping of ice‐marginal and glaciolacustrine deposits in the northern Cairngorm Mountains allows the nature of deglaciation following the Last Glacial Maximum (c.18 000 BP) to be reinterpreted. Two ice‐dammed lakes were ponded between the Glenmore lobe of the Scottish ice sheet and local glaciers draining northwards from the Cairngorm Mountains. Delta progradation from the southern end of each lake reflects dominant meltwater sources and glacio‐hydrological gradients. Sediment facies representing subaqueous mass‐flow deposits, lakebottom rhythmites, lower and upper foresets and topsets are associated with prograding delta fronts. Moraines show that the lakes were ice dammed at both ends, evidence that active glaciers existed in the Cairngorm Mountains while ice was retreating from Strath Spey, and that deglaciation was punctuated by readvances of the ice margin. These results indicate that an ice‐stagnation model of deglaciation is invalid for most of the duration of ice wastage, but instead support an active‐retreat hypothesis with multiple, climatically forced readvances. |
format |
Article in Journal/Newspaper |
author |
BRAZIER, VANESSA KIRKBRIDE, MARTIN P. GORDON, JOHN E. |
spellingShingle |
BRAZIER, VANESSA KIRKBRIDE, MARTIN P. GORDON, JOHN E. Active ice‐sheet deglaciation and ice‐dammed lakes in the northern Cairngorm Mountains, Scotland |
author_facet |
BRAZIER, VANESSA KIRKBRIDE, MARTIN P. GORDON, JOHN E. |
author_sort |
BRAZIER, VANESSA |
title |
Active ice‐sheet deglaciation and ice‐dammed lakes in the northern Cairngorm Mountains, Scotland |
title_short |
Active ice‐sheet deglaciation and ice‐dammed lakes in the northern Cairngorm Mountains, Scotland |
title_full |
Active ice‐sheet deglaciation and ice‐dammed lakes in the northern Cairngorm Mountains, Scotland |
title_fullStr |
Active ice‐sheet deglaciation and ice‐dammed lakes in the northern Cairngorm Mountains, Scotland |
title_full_unstemmed |
Active ice‐sheet deglaciation and ice‐dammed lakes in the northern Cairngorm Mountains, Scotland |
title_sort |
active ice‐sheet deglaciation and ice‐dammed lakes in the northern cairngorm mountains, scotland |
publisher |
Wiley |
publishDate |
1998 |
url |
http://dx.doi.org/10.1111/j.1502-3885.1998.tb01423.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1998.tb01423.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1998.tb01423.x |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Boreas volume 27, issue 4, page 297-310 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.1998.tb01423.x |
container_title |
Boreas |
container_volume |
27 |
container_issue |
4 |
container_start_page |
297 |
op_container_end_page |
310 |
_version_ |
1802645591559241728 |