Antarctic erosion history reconstructed by Terre Adélie moraine geochronology
Abstract We report apatite fission-track and 10 Be terrestrial cosmogenic nuclide (TCN) dating of 14 moraine boulders originating from inland Terre Adélie, East Antarctica. These data show cooling of the Proterozoic Terre Adélie craton at < ~120°C between 350 and 300 Ma, suggesting > 4 km temp...
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Online Access: | http://dx.doi.org/10.1017/s095410202000036x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410202000036X |
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crcambridgeupr:10.1017/s095410202000036x 2024-04-28T07:57:06+00:00 Antarctic erosion history reconstructed by Terre Adélie moraine geochronology Voisine, Encelyn Rolland, Yann Bernet, Matthias Carcaillet, Julien Duclaux, Guillaume Bascou, Jérôme Sue, Christian Balvay, Mélanie Ménot, René-Pierre 2020 http://dx.doi.org/10.1017/s095410202000036x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410202000036X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Antarctic Science volume 32, issue 5, page 382-395 ISSN 0954-1020 1365-2079 Geology Ecology, Evolution, Behavior and Systematics Oceanography journal-article 2020 crcambridgeupr https://doi.org/10.1017/s095410202000036x 2024-04-02T06:55:11Z Abstract We report apatite fission-track and 10 Be terrestrial cosmogenic nuclide (TCN) dating of 14 moraine boulders originating from inland Terre Adélie, East Antarctica. These data show cooling of the Proterozoic Terre Adélie craton at < ~120°C between 350 and 300 Ma, suggesting > 4 km temperate glacial erosion during the Late Palaeozoic Ice Age, followed by nearly null Mesozoic erosion and low glacial erosion (< 2 km) in the Cenozoic. Based on glacial flux maps, the origin of the boulders may be located ~400 km upstream. Preliminary TCN ( 10 Be) datings of moraine boulders cluster within the last 30 ka. Cosmogenic ages from the Lacroix Nunatak suggest a main deglaciation after the Younger Dryas at c. 10 ka, while those of Cap Prud'homme mostly cluster at 0.6 ka, in agreement with an exhumation of boulders during the Little Ice Age. Article in Journal/Newspaper Antarc* Antarctic Antarctic Science Antarctica East Antarctica Cambridge University Press Antarctic Science 32 5 382 395 |
institution |
Open Polar |
collection |
Cambridge University Press |
op_collection_id |
crcambridgeupr |
language |
English |
topic |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
spellingShingle |
Geology Ecology, Evolution, Behavior and Systematics Oceanography Voisine, Encelyn Rolland, Yann Bernet, Matthias Carcaillet, Julien Duclaux, Guillaume Bascou, Jérôme Sue, Christian Balvay, Mélanie Ménot, René-Pierre Antarctic erosion history reconstructed by Terre Adélie moraine geochronology |
topic_facet |
Geology Ecology, Evolution, Behavior and Systematics Oceanography |
description |
Abstract We report apatite fission-track and 10 Be terrestrial cosmogenic nuclide (TCN) dating of 14 moraine boulders originating from inland Terre Adélie, East Antarctica. These data show cooling of the Proterozoic Terre Adélie craton at < ~120°C between 350 and 300 Ma, suggesting > 4 km temperate glacial erosion during the Late Palaeozoic Ice Age, followed by nearly null Mesozoic erosion and low glacial erosion (< 2 km) in the Cenozoic. Based on glacial flux maps, the origin of the boulders may be located ~400 km upstream. Preliminary TCN ( 10 Be) datings of moraine boulders cluster within the last 30 ka. Cosmogenic ages from the Lacroix Nunatak suggest a main deglaciation after the Younger Dryas at c. 10 ka, while those of Cap Prud'homme mostly cluster at 0.6 ka, in agreement with an exhumation of boulders during the Little Ice Age. |
format |
Article in Journal/Newspaper |
author |
Voisine, Encelyn Rolland, Yann Bernet, Matthias Carcaillet, Julien Duclaux, Guillaume Bascou, Jérôme Sue, Christian Balvay, Mélanie Ménot, René-Pierre |
author_facet |
Voisine, Encelyn Rolland, Yann Bernet, Matthias Carcaillet, Julien Duclaux, Guillaume Bascou, Jérôme Sue, Christian Balvay, Mélanie Ménot, René-Pierre |
author_sort |
Voisine, Encelyn |
title |
Antarctic erosion history reconstructed by Terre Adélie moraine geochronology |
title_short |
Antarctic erosion history reconstructed by Terre Adélie moraine geochronology |
title_full |
Antarctic erosion history reconstructed by Terre Adélie moraine geochronology |
title_fullStr |
Antarctic erosion history reconstructed by Terre Adélie moraine geochronology |
title_full_unstemmed |
Antarctic erosion history reconstructed by Terre Adélie moraine geochronology |
title_sort |
antarctic erosion history reconstructed by terre adélie moraine geochronology |
publisher |
Cambridge University Press (CUP) |
publishDate |
2020 |
url |
http://dx.doi.org/10.1017/s095410202000036x https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S095410202000036X |
genre |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Science Antarctica East Antarctica |
op_source |
Antarctic Science volume 32, issue 5, page 382-395 ISSN 0954-1020 1365-2079 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s095410202000036x |
container_title |
Antarctic Science |
container_volume |
32 |
container_issue |
5 |
container_start_page |
382 |
op_container_end_page |
395 |
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1797586784470695936 |