The geochemistry of Jurassic dolerites from Portal Peak, Antarctica
Geochemical and isotopic analyses have been performed on a suite of samples from a Jurassic quartz tholeiite sill of the Ferrar Group at Portal Peak, Queen Alexandra Range, near the Beardmore Glacier in Antarctica. The data include major and trace element (XRF and INAA) concentrations, as well as Sr...
Published in: | Contributions to Mineralogy and Petrology |
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Language: | English |
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1989
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/c2baeca1-7150-48d8-bac3-138416322047 2023-05-15T14:01:24+02:00 The geochemistry of Jurassic dolerites from Portal Peak, Antarctica Hergt, Janet M. Chappell, Bruce W. Faure, Gunter Mensing, Teresa M. 1989-07 https://researchers.mq.edu.au/en/publications/c2baeca1-7150-48d8-bac3-138416322047 https://doi.org/10.1007/BF00373722 http://www.scopus.com/inward/record.url?scp=0001762101&partnerID=8YFLogxK eng eng info:eu-repo/semantics/restrictedAccess Hergt , J M , Chappell , B W , Faure , G & Mensing , T M 1989 , ' The geochemistry of Jurassic dolerites from Portal Peak, Antarctica ' , Contributions to Mineralogy and Petrology , vol. 102 , no. 3 , pp. 298-305 . https://doi.org/10.1007/BF00373722 article 1989 ftmacquarieunicr https://doi.org/10.1007/BF00373722 2022-11-06T06:48:19Z Geochemical and isotopic analyses have been performed on a suite of samples from a Jurassic quartz tholeiite sill of the Ferrar Group at Portal Peak, Queen Alexandra Range, near the Beardmore Glacier in Antarctica. The data include major and trace element (XRF and INAA) concentrations, as well as Sr and Nd isotopic compositions, and are combined with the results of other studies on samples from Antarctica. It is demonstrated that despite differences in the pre-intrusion (or eruption) evolution of the Ferrar Group magmas, the similarity in isotopic and chemical compositions for these rocks supports the existence of a remarkably uniform mantle source with unusual signature over a distance of thousands of kilometres. The favoured origin of this source involves the subduction of terrestrial sedimentary material into a depleted mantle reservoir. Article in Journal/Newspaper Antarc* Antarctica Beardmore Glacier Macquarie University Research Portal Beardmore ENVELOPE(174.900,174.900,-83.350,-83.350) Beardmore Glacier ENVELOPE(170.000,170.000,-84.500,-84.500) Contributions to Mineralogy and Petrology 102 3 298 305 |
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Open Polar |
collection |
Macquarie University Research Portal |
op_collection_id |
ftmacquarieunicr |
language |
English |
description |
Geochemical and isotopic analyses have been performed on a suite of samples from a Jurassic quartz tholeiite sill of the Ferrar Group at Portal Peak, Queen Alexandra Range, near the Beardmore Glacier in Antarctica. The data include major and trace element (XRF and INAA) concentrations, as well as Sr and Nd isotopic compositions, and are combined with the results of other studies on samples from Antarctica. It is demonstrated that despite differences in the pre-intrusion (or eruption) evolution of the Ferrar Group magmas, the similarity in isotopic and chemical compositions for these rocks supports the existence of a remarkably uniform mantle source with unusual signature over a distance of thousands of kilometres. The favoured origin of this source involves the subduction of terrestrial sedimentary material into a depleted mantle reservoir. |
format |
Article in Journal/Newspaper |
author |
Hergt, Janet M. Chappell, Bruce W. Faure, Gunter Mensing, Teresa M. |
spellingShingle |
Hergt, Janet M. Chappell, Bruce W. Faure, Gunter Mensing, Teresa M. The geochemistry of Jurassic dolerites from Portal Peak, Antarctica |
author_facet |
Hergt, Janet M. Chappell, Bruce W. Faure, Gunter Mensing, Teresa M. |
author_sort |
Hergt, Janet M. |
title |
The geochemistry of Jurassic dolerites from Portal Peak, Antarctica |
title_short |
The geochemistry of Jurassic dolerites from Portal Peak, Antarctica |
title_full |
The geochemistry of Jurassic dolerites from Portal Peak, Antarctica |
title_fullStr |
The geochemistry of Jurassic dolerites from Portal Peak, Antarctica |
title_full_unstemmed |
The geochemistry of Jurassic dolerites from Portal Peak, Antarctica |
title_sort |
geochemistry of jurassic dolerites from portal peak, antarctica |
publishDate |
1989 |
url |
https://researchers.mq.edu.au/en/publications/c2baeca1-7150-48d8-bac3-138416322047 https://doi.org/10.1007/BF00373722 http://www.scopus.com/inward/record.url?scp=0001762101&partnerID=8YFLogxK |
long_lat |
ENVELOPE(174.900,174.900,-83.350,-83.350) ENVELOPE(170.000,170.000,-84.500,-84.500) |
geographic |
Beardmore Beardmore Glacier |
geographic_facet |
Beardmore Beardmore Glacier |
genre |
Antarc* Antarctica Beardmore Glacier |
genre_facet |
Antarc* Antarctica Beardmore Glacier |
op_source |
Hergt , J M , Chappell , B W , Faure , G & Mensing , T M 1989 , ' The geochemistry of Jurassic dolerites from Portal Peak, Antarctica ' , Contributions to Mineralogy and Petrology , vol. 102 , no. 3 , pp. 298-305 . https://doi.org/10.1007/BF00373722 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1007/BF00373722 |
container_title |
Contributions to Mineralogy and Petrology |
container_volume |
102 |
container_issue |
3 |
container_start_page |
298 |
op_container_end_page |
305 |
_version_ |
1766271218794627072 |