In-situ U-Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica
In-situ zircon U-Pb and Hf isotopic analysis via laser ablation microprobe-inductively coupled plasma mass spectrometer (LAM-ICPMS) of samples from Kemp and MacRobertson Lands, east Antarctica suggests that the Kemp Land terrane evolved separately from the rest of the Rayner Complex prior to the ca....
Published in: | Contributions to Mineralogy and Petrology |
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Online Access: | https://researchers.mq.edu.au/en/publications/225e415c-1f34-48b4-a748-6a7a1a63bd69 https://doi.org/10.1007/s00410-004-0627-6 http://www.scopus.com/inward/record.url?scp=13944279917&partnerID=8YFLogxK |
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ftmacquarieunicr:oai:https://researchers.mq.edu.au:publications/225e415c-1f34-48b4-a748-6a7a1a63bd69 2024-06-09T07:39:02+00:00 In-situ U-Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica Halpin, J. A. Gerakiteys, C. L. Clarke, G. L. Belousova, E. A. Griffin, W. L. 2005-02 https://researchers.mq.edu.au/en/publications/225e415c-1f34-48b4-a748-6a7a1a63bd69 https://doi.org/10.1007/s00410-004-0627-6 http://www.scopus.com/inward/record.url?scp=13944279917&partnerID=8YFLogxK eng eng info:eu-repo/semantics/closedAccess Halpin , J A , Gerakiteys , C L , Clarke , G L , Belousova , E A & Griffin , W L 2005 , ' In-situ U-Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica ' , Contributions to Mineralogy and Petrology , vol. 148 , no. 6 , pp. 689-706 . https://doi.org/10.1007/s00410-004-0627-6 article 2005 ftmacquarieunicr https://doi.org/10.1007/s00410-004-0627-6 2024-05-16T14:21:50Z In-situ zircon U-Pb and Hf isotopic analysis via laser ablation microprobe-inductively coupled plasma mass spectrometer (LAM-ICPMS) of samples from Kemp and MacRobertson Lands, east Antarctica suggests that the Kemp Land terrane evolved separately from the rest of the Rayner Complex prior to the ca. 940 Ma Rayner Structural Episode. Several Archaean metamorphic events in rocks from western Kemp Land can be correlated with events previously reported for the adjacent Napier Complex. Recently reported ca. 1,600 Ma isotopic disturbance in rocks from the Oygarden Group may be correlated with a charnockitic intrusion in the Stillwell Hills before ca. 1,550 Ma. Despite being separated by some 200 km, T Hf DM ages indicate felsic orthogneiss from Rippon Point, the Oygarden Group, Havstein Island and the Stillwell Hills share a ca. 3,660-3,560 Ma source that is indistinguishable from that previously reported for parts of the Napier Complex. More recent additions to this crust include Proterozoic charnockite in the Stillwell Hills and the vicinity of Mawson Station. These plutons have distinct 176 Hf/ 177 Hf ratios and formed via the melting of crust generated at ca. 2,150-2,550 Ma and ca. 1,790-1,870 Ma respectively. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Havstein Island Kemp Land Macquarie University Research Portal East Antarctica Havstein ENVELOPE(12.383,12.383,66.173,66.173) Havstein Island ENVELOPE(58.807,58.807,-67.113,-67.113) Kemp Land ENVELOPE(57.500,57.500,-67.500,-67.500) Mawson Station ENVELOPE(62.874,62.874,-67.603,-67.603) Napier ENVELOPE(-58.440,-58.440,-62.167,-62.167) Oygarden ENVELOPE(57.500,57.500,-66.900,-66.900) Oygarden Group ENVELOPE(57.500,57.500,-66.900,-66.900) Rayner ENVELOPE(-45.166,-45.166,-60.650,-60.650) Rippon Point ENVELOPE(-130.203,-130.203,53.911,53.911) Stillwell Hills ENVELOPE(59.467,59.467,-67.417,-67.417) Contributions to Mineralogy and Petrology 148 6 689 706 |
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Open Polar |
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Macquarie University Research Portal |
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ftmacquarieunicr |
language |
English |
description |
In-situ zircon U-Pb and Hf isotopic analysis via laser ablation microprobe-inductively coupled plasma mass spectrometer (LAM-ICPMS) of samples from Kemp and MacRobertson Lands, east Antarctica suggests that the Kemp Land terrane evolved separately from the rest of the Rayner Complex prior to the ca. 940 Ma Rayner Structural Episode. Several Archaean metamorphic events in rocks from western Kemp Land can be correlated with events previously reported for the adjacent Napier Complex. Recently reported ca. 1,600 Ma isotopic disturbance in rocks from the Oygarden Group may be correlated with a charnockitic intrusion in the Stillwell Hills before ca. 1,550 Ma. Despite being separated by some 200 km, T Hf DM ages indicate felsic orthogneiss from Rippon Point, the Oygarden Group, Havstein Island and the Stillwell Hills share a ca. 3,660-3,560 Ma source that is indistinguishable from that previously reported for parts of the Napier Complex. More recent additions to this crust include Proterozoic charnockite in the Stillwell Hills and the vicinity of Mawson Station. These plutons have distinct 176 Hf/ 177 Hf ratios and formed via the melting of crust generated at ca. 2,150-2,550 Ma and ca. 1,790-1,870 Ma respectively. |
format |
Article in Journal/Newspaper |
author |
Halpin, J. A. Gerakiteys, C. L. Clarke, G. L. Belousova, E. A. Griffin, W. L. |
spellingShingle |
Halpin, J. A. Gerakiteys, C. L. Clarke, G. L. Belousova, E. A. Griffin, W. L. In-situ U-Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica |
author_facet |
Halpin, J. A. Gerakiteys, C. L. Clarke, G. L. Belousova, E. A. Griffin, W. L. |
author_sort |
Halpin, J. A. |
title |
In-situ U-Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica |
title_short |
In-situ U-Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica |
title_full |
In-situ U-Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica |
title_fullStr |
In-situ U-Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica |
title_full_unstemmed |
In-situ U-Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica |
title_sort |
in-situ u-pb geochronology and hf isotope analyses of the rayner complex, east antarctica |
publishDate |
2005 |
url |
https://researchers.mq.edu.au/en/publications/225e415c-1f34-48b4-a748-6a7a1a63bd69 https://doi.org/10.1007/s00410-004-0627-6 http://www.scopus.com/inward/record.url?scp=13944279917&partnerID=8YFLogxK |
long_lat |
ENVELOPE(12.383,12.383,66.173,66.173) ENVELOPE(58.807,58.807,-67.113,-67.113) ENVELOPE(57.500,57.500,-67.500,-67.500) ENVELOPE(62.874,62.874,-67.603,-67.603) ENVELOPE(-58.440,-58.440,-62.167,-62.167) ENVELOPE(57.500,57.500,-66.900,-66.900) ENVELOPE(57.500,57.500,-66.900,-66.900) ENVELOPE(-45.166,-45.166,-60.650,-60.650) ENVELOPE(-130.203,-130.203,53.911,53.911) ENVELOPE(59.467,59.467,-67.417,-67.417) |
geographic |
East Antarctica Havstein Havstein Island Kemp Land Mawson Station Napier Oygarden Oygarden Group Rayner Rippon Point Stillwell Hills |
geographic_facet |
East Antarctica Havstein Havstein Island Kemp Land Mawson Station Napier Oygarden Oygarden Group Rayner Rippon Point Stillwell Hills |
genre |
Antarc* Antarctica East Antarctica Havstein Island Kemp Land |
genre_facet |
Antarc* Antarctica East Antarctica Havstein Island Kemp Land |
op_source |
Halpin , J A , Gerakiteys , C L , Clarke , G L , Belousova , E A & Griffin , W L 2005 , ' In-situ U-Pb geochronology and Hf isotope analyses of the Rayner Complex, east Antarctica ' , Contributions to Mineralogy and Petrology , vol. 148 , no. 6 , pp. 689-706 . https://doi.org/10.1007/s00410-004-0627-6 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1007/s00410-004-0627-6 |
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Contributions to Mineralogy and Petrology |
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148 |
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6 |
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