The surface geometry of the Last Glacial Maximum ice sheet in the Andoya-Skanland region, northern Norway, constrained by surface exposure dating and clay mineralogy
Blockfields, weathering boundaries and marginal moraines have been mapped along a longitudinal transect from northern Andøya to Skånland in northern Norway. The degree of rock-surface weathering above and below glacial trimlines, clay-mineral assemblages and surface exposure dating based on in situ...
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Online Access: | https://hal.in2p3.fr/in2p3-00172493 https://doi.org/10.1080/03009480601024804 |
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ftuniparissaclay:oai:HAL:in2p3-00172493v1 2024-05-12T07:52:54+00:00 The surface geometry of the Last Glacial Maximum ice sheet in the Andoya-Skanland region, northern Norway, constrained by surface exposure dating and clay mineralogy Nesje, A. Dahl, S.O. Linge, H. Ballantyne, C.K. Mccarroll, D. Brook, E.J. Raisbeck, G.M. Yiou, F. Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM) Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) 2007 https://hal.in2p3.fr/in2p3-00172493 https://doi.org/10.1080/03009480601024804 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1080/03009480601024804 in2p3-00172493 https://hal.in2p3.fr/in2p3-00172493 doi:10.1080/03009480601024804 ISSN: 0300-9483 Boreas https://hal.in2p3.fr/in2p3-00172493 Boreas, 2007, 36, pp.227-239. ⟨10.1080/03009480601024804⟩ [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2007 ftuniparissaclay https://doi.org/10.1080/03009480601024804 2024-04-15T17:51:30Z Blockfields, weathering boundaries and marginal moraines have been mapped along a longitudinal transect from northern Andøya to Skånland in northern Norway. The degree of rock-surface weathering above and below glacial trimlines, clay-mineral assemblages and surface exposure dating based on in situ cosmogenic 10Be have been used to reconstruct the vertical dimensions and timing of the Last Glacial Maximum (LGM) of the Scandinavian Ice Sheet in this region. The cosmogenic exposure dates suggest that the lower blockfield boundary/trimline along the Andøya-Skånland transect represents the upper limit of the Late Weichselian ice sheet, with an average surface gradient of c. 9.5 m/km. The surface exposure dates from Andøya pre-date the LGM, suggesting that the LGM ice sheet did not reach mountain plateaux at northwest Andøya. The results thus support evidence from lake sediment records that the northern tip of Andøya was not covered by the Scandinavian Ice Sheet during the LGM. Article in Journal/Newspaper Andøya Ice Sheet Northern Norway Archives ouvertes de Paris-Saclay Andøya ENVELOPE(13.982,13.982,68.185,68.185) Norway Skånland ENVELOPE(14.355,14.355,67.175,67.175) Boreas 36 3 227 239 |
institution |
Open Polar |
collection |
Archives ouvertes de Paris-Saclay |
op_collection_id |
ftuniparissaclay |
language |
English |
topic |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Nesje, A. Dahl, S.O. Linge, H. Ballantyne, C.K. Mccarroll, D. Brook, E.J. Raisbeck, G.M. Yiou, F. The surface geometry of the Last Glacial Maximum ice sheet in the Andoya-Skanland region, northern Norway, constrained by surface exposure dating and clay mineralogy |
topic_facet |
[SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
Blockfields, weathering boundaries and marginal moraines have been mapped along a longitudinal transect from northern Andøya to Skånland in northern Norway. The degree of rock-surface weathering above and below glacial trimlines, clay-mineral assemblages and surface exposure dating based on in situ cosmogenic 10Be have been used to reconstruct the vertical dimensions and timing of the Last Glacial Maximum (LGM) of the Scandinavian Ice Sheet in this region. The cosmogenic exposure dates suggest that the lower blockfield boundary/trimline along the Andøya-Skånland transect represents the upper limit of the Late Weichselian ice sheet, with an average surface gradient of c. 9.5 m/km. The surface exposure dates from Andøya pre-date the LGM, suggesting that the LGM ice sheet did not reach mountain plateaux at northwest Andøya. The results thus support evidence from lake sediment records that the northern tip of Andøya was not covered by the Scandinavian Ice Sheet during the LGM. |
author2 |
Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse (CSNSM) Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Nesje, A. Dahl, S.O. Linge, H. Ballantyne, C.K. Mccarroll, D. Brook, E.J. Raisbeck, G.M. Yiou, F. |
author_facet |
Nesje, A. Dahl, S.O. Linge, H. Ballantyne, C.K. Mccarroll, D. Brook, E.J. Raisbeck, G.M. Yiou, F. |
author_sort |
Nesje, A. |
title |
The surface geometry of the Last Glacial Maximum ice sheet in the Andoya-Skanland region, northern Norway, constrained by surface exposure dating and clay mineralogy |
title_short |
The surface geometry of the Last Glacial Maximum ice sheet in the Andoya-Skanland region, northern Norway, constrained by surface exposure dating and clay mineralogy |
title_full |
The surface geometry of the Last Glacial Maximum ice sheet in the Andoya-Skanland region, northern Norway, constrained by surface exposure dating and clay mineralogy |
title_fullStr |
The surface geometry of the Last Glacial Maximum ice sheet in the Andoya-Skanland region, northern Norway, constrained by surface exposure dating and clay mineralogy |
title_full_unstemmed |
The surface geometry of the Last Glacial Maximum ice sheet in the Andoya-Skanland region, northern Norway, constrained by surface exposure dating and clay mineralogy |
title_sort |
surface geometry of the last glacial maximum ice sheet in the andoya-skanland region, northern norway, constrained by surface exposure dating and clay mineralogy |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.in2p3.fr/in2p3-00172493 https://doi.org/10.1080/03009480601024804 |
long_lat |
ENVELOPE(13.982,13.982,68.185,68.185) ENVELOPE(14.355,14.355,67.175,67.175) |
geographic |
Andøya Norway Skånland |
geographic_facet |
Andøya Norway Skånland |
genre |
Andøya Ice Sheet Northern Norway |
genre_facet |
Andøya Ice Sheet Northern Norway |
op_source |
ISSN: 0300-9483 Boreas https://hal.in2p3.fr/in2p3-00172493 Boreas, 2007, 36, pp.227-239. ⟨10.1080/03009480601024804⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1080/03009480601024804 in2p3-00172493 https://hal.in2p3.fr/in2p3-00172493 doi:10.1080/03009480601024804 |
op_doi |
https://doi.org/10.1080/03009480601024804 |
container_title |
Boreas |
container_volume |
36 |
container_issue |
3 |
container_start_page |
227 |
op_container_end_page |
239 |
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1798838384249012224 |