A review of mantle xenoliths in volcanic rocks from southern Victoria Land, Antarctica
Mantle xenoliths from southern Victoria Land have been collected and extensively studied for over a century. In this chapter, chemical and petrological data are, for the first time, comprehensively collated and petrogenetic models for the regional mantle are reviewed and assessed. The most common li...
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ftdatacite:10.6084/m9.figshare.c.5407266 2023-05-15T14:01:42+02:00 A review of mantle xenoliths in volcanic rocks from southern Victoria Land, Antarctica Martin, Adam P. A.F. Cooper C.L. Doherty J.A. Gamble 2021 https://dx.doi.org/10.6084/m9.figshare.c.5407266 https://geolsoc.figshare.com/collections/A_review_of_mantle_xenoliths_in_volcanic_rocks_from_southern_Victoria_Land_Antarctica/5407266 unknown Geological Society of London https://dx.doi.org/10.1144/m56-2019-42 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Geology FOS Earth and related environmental sciences Collection article 2021 ftdatacite https://doi.org/10.6084/m9.figshare.c.5407266 https://doi.org/10.1144/m56-2019-42 2021-11-05T12:55:41Z Mantle xenoliths from southern Victoria Land have been collected and extensively studied for over a century. In this chapter, chemical and petrological data are, for the first time, comprehensively collated and petrogenetic models for the regional mantle are reviewed and assessed. The most common lithologies are spinel lherzolite and harzburgite; plagioclase lherzolite also occurs, and pyroxenite xenoliths found across the province comprise <20% of all mantle xenoliths. The lithospheric mantle in the region has Paleoproterozoic stabilization ages, though pockets of younger mantle may exist. This peridotite mantle comprises a HIMU-component sensu stricto , has been variably carbonated and has undergone multiple melt-depletion events. Regional variations in a sedimentary (EMI) component to the west, and iron-rich components to the east, reflect a complex history of refertilization and metasomatism. The sources of these fluids are likely to have been oceanic crust subducted during c. 0.5 Ga and older events. Peridotites have been cross-cut by pyroxenite veins, probably in multiple episodes, with the geochemistry of some samples reflecting the involvement of an upper continental crust (EMII) component. Future research directions should apply advanced isotopic, noble gas and volatile techniques to better understand the upper mantle below this dynamic rifting environment. Article in Journal/Newspaper Antarc* Antarctica Victoria Land DataCite Metadata Store (German National Library of Science and Technology) Victoria Land |
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Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
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topic |
Geology FOS Earth and related environmental sciences |
spellingShingle |
Geology FOS Earth and related environmental sciences Martin, Adam P. A.F. Cooper C.L. Doherty J.A. Gamble A review of mantle xenoliths in volcanic rocks from southern Victoria Land, Antarctica |
topic_facet |
Geology FOS Earth and related environmental sciences |
description |
Mantle xenoliths from southern Victoria Land have been collected and extensively studied for over a century. In this chapter, chemical and petrological data are, for the first time, comprehensively collated and petrogenetic models for the regional mantle are reviewed and assessed. The most common lithologies are spinel lherzolite and harzburgite; plagioclase lherzolite also occurs, and pyroxenite xenoliths found across the province comprise <20% of all mantle xenoliths. The lithospheric mantle in the region has Paleoproterozoic stabilization ages, though pockets of younger mantle may exist. This peridotite mantle comprises a HIMU-component sensu stricto , has been variably carbonated and has undergone multiple melt-depletion events. Regional variations in a sedimentary (EMI) component to the west, and iron-rich components to the east, reflect a complex history of refertilization and metasomatism. The sources of these fluids are likely to have been oceanic crust subducted during c. 0.5 Ga and older events. Peridotites have been cross-cut by pyroxenite veins, probably in multiple episodes, with the geochemistry of some samples reflecting the involvement of an upper continental crust (EMII) component. Future research directions should apply advanced isotopic, noble gas and volatile techniques to better understand the upper mantle below this dynamic rifting environment. |
format |
Article in Journal/Newspaper |
author |
Martin, Adam P. A.F. Cooper C.L. Doherty J.A. Gamble |
author_facet |
Martin, Adam P. A.F. Cooper C.L. Doherty J.A. Gamble |
author_sort |
Martin, Adam P. |
title |
A review of mantle xenoliths in volcanic rocks from southern Victoria Land, Antarctica |
title_short |
A review of mantle xenoliths in volcanic rocks from southern Victoria Land, Antarctica |
title_full |
A review of mantle xenoliths in volcanic rocks from southern Victoria Land, Antarctica |
title_fullStr |
A review of mantle xenoliths in volcanic rocks from southern Victoria Land, Antarctica |
title_full_unstemmed |
A review of mantle xenoliths in volcanic rocks from southern Victoria Land, Antarctica |
title_sort |
review of mantle xenoliths in volcanic rocks from southern victoria land, antarctica |
publisher |
Geological Society of London |
publishDate |
2021 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.5407266 https://geolsoc.figshare.com/collections/A_review_of_mantle_xenoliths_in_volcanic_rocks_from_southern_Victoria_Land_Antarctica/5407266 |
geographic |
Victoria Land |
geographic_facet |
Victoria Land |
genre |
Antarc* Antarctica Victoria Land |
genre_facet |
Antarc* Antarctica Victoria Land |
op_relation |
https://dx.doi.org/10.1144/m56-2019-42 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.5407266 https://doi.org/10.1144/m56-2019-42 |
_version_ |
1766271728280928256 |