The subantarctic lithospheric mantle
We present a summary of peridotite in the Subantarctic (46–60° S) surrounding the Antarctic Plate. Peridotite xenoliths occur on the Kerguelen Islands and Auckland Islands. The Kerguelen Islands are underlain by a plume, whereas the Auckland Islands are part of continental Zealandia, which is a Gond...
Published in: | Geological Society, London, Memoirs |
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2023
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Online Access: | https://researchers.mq.edu.au/en/publications/69376f37-19cb-41a3-af21-ac3e3f4e70a7 https://doi.org/10.1144/M56-2020-13 http://www.scopus.com/inward/record.url?scp=85148287261&partnerID=8YFLogxK |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/69376f37-19cb-41a3-af21-ac3e3f4e70a7 2024-06-23T07:47:09+00:00 The subantarctic lithospheric mantle Delpech, Guillaume Scott, James M. Gregoire, Michel Moine, Bertrand Li, Dongxu Liu, Jingao Graham Pearson, D. van der Meer, Quinten H. A. Waight, Tod E. Michon, Gilbert Guillaume, Damien O'Reilly, Suzanne Y. Cottin, Jean-Yves Giret, André 2023-02-06 https://researchers.mq.edu.au/en/publications/69376f37-19cb-41a3-af21-ac3e3f4e70a7 https://doi.org/10.1144/M56-2020-13 http://www.scopus.com/inward/record.url?scp=85148287261&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Delpech , G , Scott , J M , Gregoire , M , Moine , B , Li , D , Liu , J , Graham Pearson , D , van der Meer , Q H A , Waight , T E , Michon , G , Guillaume , D , O'Reilly , S Y , Cottin , J-Y & Giret , A 2023 , ' The subantarctic lithospheric mantle ' , Geological Society Memoir , vol. 56 , no. 1 , pp. 115-132 . https://doi.org/10.1144/M56-2020-13 article 2023 ftmacquarieunicr https://doi.org/10.1144/M56-2020-13 2024-06-05T23:47:51Z We present a summary of peridotite in the Subantarctic (46–60° S) surrounding the Antarctic Plate. Peridotite xenoliths occur on the Kerguelen Islands and Auckland Islands. The Kerguelen Islands are underlain by a plume, whereas the Auckland Islands are part of continental Zealandia, which is a Gondwana-rifted fragment. Small amounts of serpentinized peridotite has been dredged from fracture zones on the Southeast Indian Ridge, Southwest Indian Ridge and Pacific Antarctic Ridge, and represent upwelled asthenosphere accreted to form lithosphere. Suprasubduction-zone peridotite was collected from two locations on the Sandwich Plate. Peridotites from most subantarctic occurrences are moderately to highly depleted, and many show signs of subsequent metasomatic enrichment. Os isotopes indicate that subantarctic continental and oceanic lithospheric mantle contains ancient fragments that underwent depletion long before formation of the overlying crust. Article in Journal/Newspaper Antarc* Antarctic Auckland Islands Kerguelen Islands Macquarie University Research Portal Antarctic Indian Kerguelen Kerguelen Islands Pacific Southeast Indian Ridge ENVELOPE(110.000,110.000,-50.000,-50.000) The Antarctic Geological Society, London, Memoirs 56 1 115 132 |
institution |
Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
description |
We present a summary of peridotite in the Subantarctic (46–60° S) surrounding the Antarctic Plate. Peridotite xenoliths occur on the Kerguelen Islands and Auckland Islands. The Kerguelen Islands are underlain by a plume, whereas the Auckland Islands are part of continental Zealandia, which is a Gondwana-rifted fragment. Small amounts of serpentinized peridotite has been dredged from fracture zones on the Southeast Indian Ridge, Southwest Indian Ridge and Pacific Antarctic Ridge, and represent upwelled asthenosphere accreted to form lithosphere. Suprasubduction-zone peridotite was collected from two locations on the Sandwich Plate. Peridotites from most subantarctic occurrences are moderately to highly depleted, and many show signs of subsequent metasomatic enrichment. Os isotopes indicate that subantarctic continental and oceanic lithospheric mantle contains ancient fragments that underwent depletion long before formation of the overlying crust. |
format |
Article in Journal/Newspaper |
author |
Delpech, Guillaume Scott, James M. Gregoire, Michel Moine, Bertrand Li, Dongxu Liu, Jingao Graham Pearson, D. van der Meer, Quinten H. A. Waight, Tod E. Michon, Gilbert Guillaume, Damien O'Reilly, Suzanne Y. Cottin, Jean-Yves Giret, André |
spellingShingle |
Delpech, Guillaume Scott, James M. Gregoire, Michel Moine, Bertrand Li, Dongxu Liu, Jingao Graham Pearson, D. van der Meer, Quinten H. A. Waight, Tod E. Michon, Gilbert Guillaume, Damien O'Reilly, Suzanne Y. Cottin, Jean-Yves Giret, André The subantarctic lithospheric mantle |
author_facet |
Delpech, Guillaume Scott, James M. Gregoire, Michel Moine, Bertrand Li, Dongxu Liu, Jingao Graham Pearson, D. van der Meer, Quinten H. A. Waight, Tod E. Michon, Gilbert Guillaume, Damien O'Reilly, Suzanne Y. Cottin, Jean-Yves Giret, André |
author_sort |
Delpech, Guillaume |
title |
The subantarctic lithospheric mantle |
title_short |
The subantarctic lithospheric mantle |
title_full |
The subantarctic lithospheric mantle |
title_fullStr |
The subantarctic lithospheric mantle |
title_full_unstemmed |
The subantarctic lithospheric mantle |
title_sort |
subantarctic lithospheric mantle |
publishDate |
2023 |
url |
https://researchers.mq.edu.au/en/publications/69376f37-19cb-41a3-af21-ac3e3f4e70a7 https://doi.org/10.1144/M56-2020-13 http://www.scopus.com/inward/record.url?scp=85148287261&partnerID=8YFLogxK |
long_lat |
ENVELOPE(110.000,110.000,-50.000,-50.000) |
geographic |
Antarctic Indian Kerguelen Kerguelen Islands Pacific Southeast Indian Ridge The Antarctic |
geographic_facet |
Antarctic Indian Kerguelen Kerguelen Islands Pacific Southeast Indian Ridge The Antarctic |
genre |
Antarc* Antarctic Auckland Islands Kerguelen Islands |
genre_facet |
Antarc* Antarctic Auckland Islands Kerguelen Islands |
op_source |
Delpech , G , Scott , J M , Gregoire , M , Moine , B , Li , D , Liu , J , Graham Pearson , D , van der Meer , Q H A , Waight , T E , Michon , G , Guillaume , D , O'Reilly , S Y , Cottin , J-Y & Giret , A 2023 , ' The subantarctic lithospheric mantle ' , Geological Society Memoir , vol. 56 , no. 1 , pp. 115-132 . https://doi.org/10.1144/M56-2020-13 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1144/M56-2020-13 |
container_title |
Geological Society, London, Memoirs |
container_volume |
56 |
container_issue |
1 |
container_start_page |
115 |
op_container_end_page |
132 |
_version_ |
1802651240548532224 |