Comparison of techniques for dating of subsurface ice from Monlesi ice cave, Switzerland
The presence of cave ice is documented in many karst regions but very little is known about the age range of this potential paleoclimate archive. This case study from the Monlesi ice cave, Swiss Jura Mountains, demonstrates that dating of cave ice is possible using a multi-parameter approach. Ice pe...
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International Glaciological Society
2007
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ftunivbern:oai:boris.unibe.ch:22631 2023-08-20T04:07:38+02:00 Comparison of techniques for dating of subsurface ice from Monlesi ice cave, Switzerland Luetscher, Marc Bolius, David Schwikowski, Margit Schotterer, Ulrich Smart, Peter 2007 application/pdf https://boris.unibe.ch/22631/1/comparison-of-techniques-for-dating-of-subsurface-ice-from-monlesi-ice-cave-switzerland.pdf https://boris.unibe.ch/22631/ https://doi.org/10.3189/002214307783258503 eng eng International Glaciological Society https://boris.unibe.ch/22631/ info:eu-repo/semantics/restrictedAccess Luetscher, Marc; Bolius, David; Schwikowski, Margit; Schotterer, Ulrich; Smart, Peter (2007). Comparison of techniques for dating of subsurface ice from Monlesi ice cave, Switzerland. Journal of glaciology, 53(182), pp. 374-384. Cambridge: International Glaciological Society 10.3189/002214307783258503 <http://dx.doi.org/10.3189/002214307783258503> info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion PeerReviewed 2007 ftunivbern https://doi.org/10.3189/002214307783258503 2023-07-31T20:46:26Z The presence of cave ice is documented in many karst regions but very little is known about the age range of this potential paleoclimate archive. This case study from the Monlesi ice cave, Swiss Jura Mountains, demonstrates that dating of cave ice is possible using a multi-parameter approach. Ice petrography, debris content and oxygen isotope composition have the potential for identification of annual growth layers, but require a continuous core from the ice deposits, limiting application of this approach. Furthermore, complete melting of ice accumulations from individual years may occur, causing amalgamation of several annual bands. Use of 3H content of the ice and 14C dating of organic debris present in the ice proved to be of limited utility, providing rather broad bounds for the actual age. Initial estimates based on 210Pb analyses from clear ice samples gave results comparable to those from other methods. The most reliable techniques applied were the determination of ice turnover rates, and the dating of anthropogenic inclusions (a roof tile) in the ice. These suggest, respectively, that the base of the cave ice was a minimum of 120 and a maximum of 158 years old. Therefore, our data support the idea that mid-latitude and low-altitude subsurface ice accumulations result from modern deposition processes rather than from presence of Pleistocene relict ice. Article in Journal/Newspaper Journal of Glaciology BORIS (Bern Open Repository and Information System, University of Bern) Jura ENVELOPE(13.501,13.501,68.062,68.062) Journal of Glaciology 53 182 374 384 |
institution |
Open Polar |
collection |
BORIS (Bern Open Repository and Information System, University of Bern) |
op_collection_id |
ftunivbern |
language |
English |
description |
The presence of cave ice is documented in many karst regions but very little is known about the age range of this potential paleoclimate archive. This case study from the Monlesi ice cave, Swiss Jura Mountains, demonstrates that dating of cave ice is possible using a multi-parameter approach. Ice petrography, debris content and oxygen isotope composition have the potential for identification of annual growth layers, but require a continuous core from the ice deposits, limiting application of this approach. Furthermore, complete melting of ice accumulations from individual years may occur, causing amalgamation of several annual bands. Use of 3H content of the ice and 14C dating of organic debris present in the ice proved to be of limited utility, providing rather broad bounds for the actual age. Initial estimates based on 210Pb analyses from clear ice samples gave results comparable to those from other methods. The most reliable techniques applied were the determination of ice turnover rates, and the dating of anthropogenic inclusions (a roof tile) in the ice. These suggest, respectively, that the base of the cave ice was a minimum of 120 and a maximum of 158 years old. Therefore, our data support the idea that mid-latitude and low-altitude subsurface ice accumulations result from modern deposition processes rather than from presence of Pleistocene relict ice. |
format |
Article in Journal/Newspaper |
author |
Luetscher, Marc Bolius, David Schwikowski, Margit Schotterer, Ulrich Smart, Peter |
spellingShingle |
Luetscher, Marc Bolius, David Schwikowski, Margit Schotterer, Ulrich Smart, Peter Comparison of techniques for dating of subsurface ice from Monlesi ice cave, Switzerland |
author_facet |
Luetscher, Marc Bolius, David Schwikowski, Margit Schotterer, Ulrich Smart, Peter |
author_sort |
Luetscher, Marc |
title |
Comparison of techniques for dating of subsurface ice from Monlesi ice cave, Switzerland |
title_short |
Comparison of techniques for dating of subsurface ice from Monlesi ice cave, Switzerland |
title_full |
Comparison of techniques for dating of subsurface ice from Monlesi ice cave, Switzerland |
title_fullStr |
Comparison of techniques for dating of subsurface ice from Monlesi ice cave, Switzerland |
title_full_unstemmed |
Comparison of techniques for dating of subsurface ice from Monlesi ice cave, Switzerland |
title_sort |
comparison of techniques for dating of subsurface ice from monlesi ice cave, switzerland |
publisher |
International Glaciological Society |
publishDate |
2007 |
url |
https://boris.unibe.ch/22631/1/comparison-of-techniques-for-dating-of-subsurface-ice-from-monlesi-ice-cave-switzerland.pdf https://boris.unibe.ch/22631/ https://doi.org/10.3189/002214307783258503 |
long_lat |
ENVELOPE(13.501,13.501,68.062,68.062) |
geographic |
Jura |
geographic_facet |
Jura |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Luetscher, Marc; Bolius, David; Schwikowski, Margit; Schotterer, Ulrich; Smart, Peter (2007). Comparison of techniques for dating of subsurface ice from Monlesi ice cave, Switzerland. Journal of glaciology, 53(182), pp. 374-384. Cambridge: International Glaciological Society 10.3189/002214307783258503 <http://dx.doi.org/10.3189/002214307783258503> |
op_relation |
https://boris.unibe.ch/22631/ |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.3189/002214307783258503 |
container_title |
Journal of Glaciology |
container_volume |
53 |
container_issue |
182 |
container_start_page |
374 |
op_container_end_page |
384 |
_version_ |
1774719418990854144 |