Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica
Wilkes Land in East Antarctica remains one of the last geological exploration frontiers on Earth. Hidden beneath kilometres of ice, its bedrock preserves a poorly-understood tectonic history that mirrors that of southern Australia and holds critical insights into past supercontinent cycles. Here, we...
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Online Access: | https://doi.org/10.1038/s41598-019-46612-y http://www.ncbi.nlm.nih.gov/pubmed/31308422 http://ecite.utas.edu.au/133912 |
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ftunivtasecite:oai:ecite.utas.edu.au:133912 2023-05-15T13:55:18+02:00 Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica Maritati, A Halpin, JA Whittaker, JM Daczko, NR 2019 application/pdf https://doi.org/10.1038/s41598-019-46612-y http://www.ncbi.nlm.nih.gov/pubmed/31308422 http://ecite.utas.edu.au/133912 en eng Nature Publishing Group http://ecite.utas.edu.au/133912/1/133912 - Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica.pdf http://dx.doi.org/10.1038/s41598-019-46612-y Maritati, A and Halpin, JA and Whittaker, JM and Daczko, NR, Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica, Scientific Reports, 9 Article 10192. ISSN 2045-2322 (2019) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/31308422 http://ecite.utas.edu.au/133912 Earth Sciences Geology Tectonics Refereed Article PeerReviewed 2019 ftunivtasecite https://doi.org/10.1038/s41598-019-46612-y 2020-06-08T22:16:17Z Wilkes Land in East Antarctica remains one of the last geological exploration frontiers on Earth. Hidden beneath kilometres of ice, its bedrock preserves a poorly-understood tectonic history that mirrors that of southern Australia and holds critical insights into past supercontinent cycles. Here, we use new and recently published Australian and Antarctic geological and geophysical data to present a novel interpretation of the age and character of crystalline basement and sedimentary cover of interior Wilkes Land. We combine new zircon UPb and Hf isotopic data from remote Antarctic outcrops with aeromagnetic data observations from the conjugate Australian-Antarctic margins to identify two new Antarctic Mesoproterozoic basement provinces corresponding to the continuation of the Coompana and Madura provinces of southern Australia into Wilkes Land. Using both detrital zircon U-Pb-Hf and authigenic monazite U-Th-Pb isotopic data from glacial erratic sandstone samples, we identify the presence of Neoproterozoic sedimentary rocks covering Mesoproterozoic basement. Together, these new geological insights into the ice-covered bedrock of Wilkes Land substantially improve correlations of Antarctic and Australian geological elements and provide key constraints on the tectonic architecture of this sector of the East Antarctic Shield and its role in supercontinent reconstructions. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Wilkes Land eCite UTAS (University of Tasmania) Antarctic East Antarctica Wilkes Land ENVELOPE(120.000,120.000,-69.000,-69.000) Scientific Reports 9 1 |
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Open Polar |
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eCite UTAS (University of Tasmania) |
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ftunivtasecite |
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English |
topic |
Earth Sciences Geology Tectonics |
spellingShingle |
Earth Sciences Geology Tectonics Maritati, A Halpin, JA Whittaker, JM Daczko, NR Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica |
topic_facet |
Earth Sciences Geology Tectonics |
description |
Wilkes Land in East Antarctica remains one of the last geological exploration frontiers on Earth. Hidden beneath kilometres of ice, its bedrock preserves a poorly-understood tectonic history that mirrors that of southern Australia and holds critical insights into past supercontinent cycles. Here, we use new and recently published Australian and Antarctic geological and geophysical data to present a novel interpretation of the age and character of crystalline basement and sedimentary cover of interior Wilkes Land. We combine new zircon UPb and Hf isotopic data from remote Antarctic outcrops with aeromagnetic data observations from the conjugate Australian-Antarctic margins to identify two new Antarctic Mesoproterozoic basement provinces corresponding to the continuation of the Coompana and Madura provinces of southern Australia into Wilkes Land. Using both detrital zircon U-Pb-Hf and authigenic monazite U-Th-Pb isotopic data from glacial erratic sandstone samples, we identify the presence of Neoproterozoic sedimentary rocks covering Mesoproterozoic basement. Together, these new geological insights into the ice-covered bedrock of Wilkes Land substantially improve correlations of Antarctic and Australian geological elements and provide key constraints on the tectonic architecture of this sector of the East Antarctic Shield and its role in supercontinent reconstructions. |
format |
Article in Journal/Newspaper |
author |
Maritati, A Halpin, JA Whittaker, JM Daczko, NR |
author_facet |
Maritati, A Halpin, JA Whittaker, JM Daczko, NR |
author_sort |
Maritati, A |
title |
Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica |
title_short |
Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica |
title_full |
Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica |
title_fullStr |
Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica |
title_full_unstemmed |
Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica |
title_sort |
fingerprinting proterozoic bedrock in interior wilkes land, east antarctica |
publisher |
Nature Publishing Group |
publishDate |
2019 |
url |
https://doi.org/10.1038/s41598-019-46612-y http://www.ncbi.nlm.nih.gov/pubmed/31308422 http://ecite.utas.edu.au/133912 |
long_lat |
ENVELOPE(120.000,120.000,-69.000,-69.000) |
geographic |
Antarctic East Antarctica Wilkes Land |
geographic_facet |
Antarctic East Antarctica Wilkes Land |
genre |
Antarc* Antarctic Antarctica East Antarctica Wilkes Land |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Wilkes Land |
op_relation |
http://ecite.utas.edu.au/133912/1/133912 - Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica.pdf http://dx.doi.org/10.1038/s41598-019-46612-y Maritati, A and Halpin, JA and Whittaker, JM and Daczko, NR, Fingerprinting Proterozoic bedrock in interior Wilkes Land, East Antarctica, Scientific Reports, 9 Article 10192. ISSN 2045-2322 (2019) [Refereed Article] http://www.ncbi.nlm.nih.gov/pubmed/31308422 http://ecite.utas.edu.au/133912 |
op_doi |
https://doi.org/10.1038/s41598-019-46612-y |
container_title |
Scientific Reports |
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9 |
container_issue |
1 |
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1766261723971452928 |