Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica
New K-Ar and Rb-Sr data are presented for the age of part of the supposed late Palaeozoic/early Mesozoic metamorphic complex in West Antarctica (here renamed the ‘Scotia metamorphic complex’). These results, together with a review of other radiometric and palaeontological evidence, fail to confirm a...
Published in: | Journal of the Geological Society |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Geological Society of London
1982
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/524508/ https://doi.org/10.1144/gsjgs.139.6.0683 |
id |
ftnerc:oai:nora.nerc.ac.uk:524508 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:524508 2023-05-15T13:41:44+02:00 Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica Tanner, P.W.G. Pankhurst, R.J. Hyden, G. 1982 http://nora.nerc.ac.uk/id/eprint/524508/ https://doi.org/10.1144/gsjgs.139.6.0683 unknown Geological Society of London Tanner, P.W.G.; Pankhurst, R.J.; Hyden, G. 1982 Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica. Journal of the Geological Society, 139 (6). 683-690. https://doi.org/10.1144/gsjgs.139.6.0683 <https://doi.org/10.1144/gsjgs.139.6.0683> Earth Sciences Publication - Article PeerReviewed 1982 ftnerc https://doi.org/10.1144/gsjgs.139.6.0683 2023-02-04T19:48:53Z New K-Ar and Rb-Sr data are presented for the age of part of the supposed late Palaeozoic/early Mesozoic metamorphic complex in West Antarctica (here renamed the ‘Scotia metamorphic complex’). These results, together with a review of other radiometric and palaeontological evidence, fail to confirm a pre-Mesozoic age for the subduction complex in this region although rocks belonging to the albite-epidote-amphibolite facies could be as old as Permian. Blueschists and greenschists from the South Shetland Is appear to be significantly younger and were probably formed, in part at least, during Cretaceous subduction. Article in Journal/Newspaper Antarc* Antarctica Antarctica Journal South Shetland Islands West Antarctica Natural Environment Research Council: NERC Open Research Archive South Shetland Islands West Antarctica Journal of the Geological Society 139 6 683 690 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Earth Sciences |
spellingShingle |
Earth Sciences Tanner, P.W.G. Pankhurst, R.J. Hyden, G. Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica |
topic_facet |
Earth Sciences |
description |
New K-Ar and Rb-Sr data are presented for the age of part of the supposed late Palaeozoic/early Mesozoic metamorphic complex in West Antarctica (here renamed the ‘Scotia metamorphic complex’). These results, together with a review of other radiometric and palaeontological evidence, fail to confirm a pre-Mesozoic age for the subduction complex in this region although rocks belonging to the albite-epidote-amphibolite facies could be as old as Permian. Blueschists and greenschists from the South Shetland Is appear to be significantly younger and were probably formed, in part at least, during Cretaceous subduction. |
format |
Article in Journal/Newspaper |
author |
Tanner, P.W.G. Pankhurst, R.J. Hyden, G. |
author_facet |
Tanner, P.W.G. Pankhurst, R.J. Hyden, G. |
author_sort |
Tanner, P.W.G. |
title |
Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica |
title_short |
Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica |
title_full |
Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica |
title_fullStr |
Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica |
title_full_unstemmed |
Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica |
title_sort |
radiometric evidence for the age of the subduction complex in the south orkney and south shetland islands, west antarctica |
publisher |
Geological Society of London |
publishDate |
1982 |
url |
http://nora.nerc.ac.uk/id/eprint/524508/ https://doi.org/10.1144/gsjgs.139.6.0683 |
geographic |
South Shetland Islands West Antarctica |
geographic_facet |
South Shetland Islands West Antarctica |
genre |
Antarc* Antarctica Antarctica Journal South Shetland Islands West Antarctica |
genre_facet |
Antarc* Antarctica Antarctica Journal South Shetland Islands West Antarctica |
op_relation |
Tanner, P.W.G.; Pankhurst, R.J.; Hyden, G. 1982 Radiometric evidence for the age of the subduction complex in the South Orkney and South Shetland Islands, West Antarctica. Journal of the Geological Society, 139 (6). 683-690. https://doi.org/10.1144/gsjgs.139.6.0683 <https://doi.org/10.1144/gsjgs.139.6.0683> |
op_doi |
https://doi.org/10.1144/gsjgs.139.6.0683 |
container_title |
Journal of the Geological Society |
container_volume |
139 |
container_issue |
6 |
container_start_page |
683 |
op_container_end_page |
690 |
_version_ |
1766155548383772672 |