The discovery of kimberlites in Antarctica extends the vast Gondwanan Cretaceous province
Kimberlites are a volumetrically minor component of the Earth's volcanic record, but are very important as the major commercial source of diamonds and as the deepest samples of the Earth's mantle. They were predominantly emplaced from ≈2,100 Ma to ≈10 ka ago, into ancient, stable regions o...
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/bd93c2b2-73b9-447d-aeeb-5086e1cb1413 2024-06-16T07:34:56+00:00 The discovery of kimberlites in Antarctica extends the vast Gondwanan Cretaceous province Yaxley, Gregory M. Kamenetsky, Vadim S. Nichols, Geoffrey T. Maas, Roland Belousova, Elena Rosenthal, Anja Norman, Marc 2013-12-17 https://researchers.mq.edu.au/en/publications/bd93c2b2-73b9-447d-aeeb-5086e1cb1413 https://doi.org/10.1038/ncomms3921 http://www.scopus.com/inward/record.url?scp=84890694295&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Yaxley , G M , Kamenetsky , V S , Nichols , G T , Maas , R , Belousova , E , Rosenthal , A & Norman , M 2013 , ' The discovery of kimberlites in Antarctica extends the vast Gondwanan Cretaceous province ' , Nature Communications , vol. 4 , 2921 , pp. 1-7 . https://doi.org/10.1038/ncomms3921 article 2013 ftmacquarieunicr https://doi.org/10.1038/ncomms3921 2024-05-22T23:48:02Z Kimberlites are a volumetrically minor component of the Earth's volcanic record, but are very important as the major commercial source of diamonds and as the deepest samples of the Earth's mantle. They were predominantly emplaced from ≈2,100 Ma to ≈10 ka ago, into ancient, stable regions of continental crust (cratons), but are also known from continental rifts and mobile belts. Kimberlites have been reported from almost all major cratons on all continents except for Antarctica. Here we report the first bona fide Antarctic kimberlite occurrence, from the northern Prince Charles Mountains, emplaced during the reactivation of the Lambert Graben associated with rifting of India from Australia-Antarctica. The samples are texturally, mineralogically and geochemically typical of Group I kimberlites from more classical localities. Their ≈120 Ma ages overlap with those of many kimberlites from other world-wide localities, extending a vast Cretaceous, Gondwanan kimberlite province, for the first time, into Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctica Prince Charles Mountains Macquarie University Research Portal Antarctic Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) Nature Communications 4 1 |
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Macquarie University Research Portal |
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ftmacquarieunicr |
language |
English |
description |
Kimberlites are a volumetrically minor component of the Earth's volcanic record, but are very important as the major commercial source of diamonds and as the deepest samples of the Earth's mantle. They were predominantly emplaced from ≈2,100 Ma to ≈10 ka ago, into ancient, stable regions of continental crust (cratons), but are also known from continental rifts and mobile belts. Kimberlites have been reported from almost all major cratons on all continents except for Antarctica. Here we report the first bona fide Antarctic kimberlite occurrence, from the northern Prince Charles Mountains, emplaced during the reactivation of the Lambert Graben associated with rifting of India from Australia-Antarctica. The samples are texturally, mineralogically and geochemically typical of Group I kimberlites from more classical localities. Their ≈120 Ma ages overlap with those of many kimberlites from other world-wide localities, extending a vast Cretaceous, Gondwanan kimberlite province, for the first time, into Antarctica. |
format |
Article in Journal/Newspaper |
author |
Yaxley, Gregory M. Kamenetsky, Vadim S. Nichols, Geoffrey T. Maas, Roland Belousova, Elena Rosenthal, Anja Norman, Marc |
spellingShingle |
Yaxley, Gregory M. Kamenetsky, Vadim S. Nichols, Geoffrey T. Maas, Roland Belousova, Elena Rosenthal, Anja Norman, Marc The discovery of kimberlites in Antarctica extends the vast Gondwanan Cretaceous province |
author_facet |
Yaxley, Gregory M. Kamenetsky, Vadim S. Nichols, Geoffrey T. Maas, Roland Belousova, Elena Rosenthal, Anja Norman, Marc |
author_sort |
Yaxley, Gregory M. |
title |
The discovery of kimberlites in Antarctica extends the vast Gondwanan Cretaceous province |
title_short |
The discovery of kimberlites in Antarctica extends the vast Gondwanan Cretaceous province |
title_full |
The discovery of kimberlites in Antarctica extends the vast Gondwanan Cretaceous province |
title_fullStr |
The discovery of kimberlites in Antarctica extends the vast Gondwanan Cretaceous province |
title_full_unstemmed |
The discovery of kimberlites in Antarctica extends the vast Gondwanan Cretaceous province |
title_sort |
discovery of kimberlites in antarctica extends the vast gondwanan cretaceous province |
publishDate |
2013 |
url |
https://researchers.mq.edu.au/en/publications/bd93c2b2-73b9-447d-aeeb-5086e1cb1413 https://doi.org/10.1038/ncomms3921 http://www.scopus.com/inward/record.url?scp=84890694295&partnerID=8YFLogxK |
long_lat |
ENVELOPE(67.246,67.246,-71.427,-71.427) |
geographic |
Antarctic Prince Charles Mountains |
geographic_facet |
Antarctic Prince Charles Mountains |
genre |
Antarc* Antarctic Antarctica Prince Charles Mountains |
genre_facet |
Antarc* Antarctic Antarctica Prince Charles Mountains |
op_source |
Yaxley , G M , Kamenetsky , V S , Nichols , G T , Maas , R , Belousova , E , Rosenthal , A & Norman , M 2013 , ' The discovery of kimberlites in Antarctica extends the vast Gondwanan Cretaceous province ' , Nature Communications , vol. 4 , 2921 , pp. 1-7 . https://doi.org/10.1038/ncomms3921 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1038/ncomms3921 |
container_title |
Nature Communications |
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4 |
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1 |
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1802011759153774592 |