Middle Jurassic rhyolite volcanism of eastern Graham Land, Antarctic Peninsula: age correlations and stratigraphic relationships
Silicic volcanism at c. 168 Ma has been identified previously on the Antarctic Peninsula, and the Mapple Formation, which includes those volcanic rocks, has been defined and documented from one area of the east coast of Graham Land. Based on age and geochemical criteria, correlations have been made...
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2010
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ftnerc:oai:nora.nerc.ac.uk:10624 2023-05-15T13:45:10+02:00 Middle Jurassic rhyolite volcanism of eastern Graham Land, Antarctic Peninsula: age correlations and stratigraphic relationships Riley, Teal R. Flowerdew, Michael J. Hunter, Morag A. Whitehouse, Martin J. 2010 http://nora.nerc.ac.uk/id/eprint/10624/ http://journals.cambridge.org/action/displayFulltext?type=1&pdftype=1&fid=7792040&jid=GEO&volumeId=147&issueId=04&aid=7792038 unknown Cambridge University Press Riley, Teal R. orcid:0000-0002-3333-5021 Flowerdew, Michael J.; Hunter, Morag A.; Whitehouse, Martin J. 2010 Middle Jurassic rhyolite volcanism of eastern Graham Land, Antarctic Peninsula: age correlations and stratigraphic relationships. Geological Magazine, 147 (4). 581-595. https://doi.org/10.1017/S0016756809990720 <https://doi.org/10.1017/S0016756809990720> Earth Sciences Publication - Article PeerReviewed 2010 ftnerc https://doi.org/10.1017/S0016756809990720 2023-02-04T19:26:49Z Silicic volcanism at c. 168 Ma has been identified previously on the Antarctic Peninsula, and the Mapple Formation, which includes those volcanic rocks, has been defined and documented from one area of the east coast of Graham Land. Based on age and geochemical criteria, correlations have been made to the extensive Chon Aike Province of South America, which has been demonstrated to be one of the largest silicic volcanic provinces in the world. Rhyolitic and intermediate composition volcanic successions from six separate localities on the east coast of the Antarctic Peninsula are described here and are confirmed as correlatives of the Mapple Formation, based on newly acquired geochronology and field observations. They are dominantly rhyolitic crystal tuffs and/or ignimbrites with ages in the interval 162-168 Ma, overlapping with the age of the Mapple Formation (167-171 Ma) at the type locality. Andesitic agglomerates are also described, which are included in the same event and demonstrate the occurrence of rare intermediate volcanism, which is also seen in the Chon Aike Province. A new group, the Graham Land Volcanic Group, is defined here, and criteria are established which allow the separation of some volcanic successions out of the previously defined Antarctic Peninsula Volcanic Group, which takes no account of tectonic setting, eruption age or geochemistry. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Graham Land Natural Environment Research Council: NERC Open Research Archive Antarctic The Antarctic Antarctic Peninsula Graham Land ENVELOPE(-63.500,-63.500,-66.000,-66.000) Geological Magazine 147 4 581 595 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
unknown |
topic |
Earth Sciences |
spellingShingle |
Earth Sciences Riley, Teal R. Flowerdew, Michael J. Hunter, Morag A. Whitehouse, Martin J. Middle Jurassic rhyolite volcanism of eastern Graham Land, Antarctic Peninsula: age correlations and stratigraphic relationships |
topic_facet |
Earth Sciences |
description |
Silicic volcanism at c. 168 Ma has been identified previously on the Antarctic Peninsula, and the Mapple Formation, which includes those volcanic rocks, has been defined and documented from one area of the east coast of Graham Land. Based on age and geochemical criteria, correlations have been made to the extensive Chon Aike Province of South America, which has been demonstrated to be one of the largest silicic volcanic provinces in the world. Rhyolitic and intermediate composition volcanic successions from six separate localities on the east coast of the Antarctic Peninsula are described here and are confirmed as correlatives of the Mapple Formation, based on newly acquired geochronology and field observations. They are dominantly rhyolitic crystal tuffs and/or ignimbrites with ages in the interval 162-168 Ma, overlapping with the age of the Mapple Formation (167-171 Ma) at the type locality. Andesitic agglomerates are also described, which are included in the same event and demonstrate the occurrence of rare intermediate volcanism, which is also seen in the Chon Aike Province. A new group, the Graham Land Volcanic Group, is defined here, and criteria are established which allow the separation of some volcanic successions out of the previously defined Antarctic Peninsula Volcanic Group, which takes no account of tectonic setting, eruption age or geochemistry. |
format |
Article in Journal/Newspaper |
author |
Riley, Teal R. Flowerdew, Michael J. Hunter, Morag A. Whitehouse, Martin J. |
author_facet |
Riley, Teal R. Flowerdew, Michael J. Hunter, Morag A. Whitehouse, Martin J. |
author_sort |
Riley, Teal R. |
title |
Middle Jurassic rhyolite volcanism of eastern Graham Land, Antarctic Peninsula: age correlations and stratigraphic relationships |
title_short |
Middle Jurassic rhyolite volcanism of eastern Graham Land, Antarctic Peninsula: age correlations and stratigraphic relationships |
title_full |
Middle Jurassic rhyolite volcanism of eastern Graham Land, Antarctic Peninsula: age correlations and stratigraphic relationships |
title_fullStr |
Middle Jurassic rhyolite volcanism of eastern Graham Land, Antarctic Peninsula: age correlations and stratigraphic relationships |
title_full_unstemmed |
Middle Jurassic rhyolite volcanism of eastern Graham Land, Antarctic Peninsula: age correlations and stratigraphic relationships |
title_sort |
middle jurassic rhyolite volcanism of eastern graham land, antarctic peninsula: age correlations and stratigraphic relationships |
publisher |
Cambridge University Press |
publishDate |
2010 |
url |
http://nora.nerc.ac.uk/id/eprint/10624/ http://journals.cambridge.org/action/displayFulltext?type=1&pdftype=1&fid=7792040&jid=GEO&volumeId=147&issueId=04&aid=7792038 |
long_lat |
ENVELOPE(-63.500,-63.500,-66.000,-66.000) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Graham Land |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Graham Land |
genre |
Antarc* Antarctic Antarctic Peninsula Graham Land |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Graham Land |
op_relation |
Riley, Teal R. orcid:0000-0002-3333-5021 Flowerdew, Michael J.; Hunter, Morag A.; Whitehouse, Martin J. 2010 Middle Jurassic rhyolite volcanism of eastern Graham Land, Antarctic Peninsula: age correlations and stratigraphic relationships. Geological Magazine, 147 (4). 581-595. https://doi.org/10.1017/S0016756809990720 <https://doi.org/10.1017/S0016756809990720> |
op_doi |
https://doi.org/10.1017/S0016756809990720 |
container_title |
Geological Magazine |
container_volume |
147 |
container_issue |
4 |
container_start_page |
581 |
op_container_end_page |
595 |
_version_ |
1766214230901522432 |