A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes

New structural and age data suggest that West Gondwana may have been at lower palaeolatitudes than previously interpreted from Albian sequences in Gondwana marginal suspect terranes. The Palmer Land event, which juxtaposed Mesozoic terranes on the Gondwana margin, deformed granitoids in the southern...

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Published in:Journal of the Geological Society
Main Authors: Vaughan, Alan P.M., Pankhurst, Robert J., Fanning, C.Mark
Format: Article in Journal/Newspaper
Language:unknown
Published: Geological Society of London 2002
Subjects:
Antarctic
Antarctic Peninsula
Palmer Land
Antarc*
Online Access:http://nora.nerc.ac.uk/id/eprint/17478/
http://jgs.geoscienceworld.org/content/159/2/113.abstract
id ftnerc:oai:nora.nerc.ac.uk:17478
record_format openpolar
spelling ftnerc:oai:nora.nerc.ac.uk:17478 2023-05-15T13:45:12+02:00 A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes Vaughan, Alan P.M. Pankhurst, Robert J. Fanning, C.Mark 2002 http://nora.nerc.ac.uk/id/eprint/17478/ http://jgs.geoscienceworld.org/content/159/2/113.abstract unknown Geological Society of London Vaughan, Alan P.M.; Pankhurst, Robert J.; Fanning, C.Mark. 2002 A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes. Journal of the Geological Society, 159 (2). 113-116. https://doi.org/10.1144/0016-764901-090 <https://doi.org/10.1144/0016-764901-090> Publication - Article PeerReviewed 2002 ftnerc https://doi.org/10.1144/0016-764901-090 2023-02-04T19:31:09Z New structural and age data suggest that West Gondwana may have been at lower palaeolatitudes than previously interpreted from Albian sequences in Gondwana marginal suspect terranes. The Palmer Land event, which juxtaposed Mesozoic terranes on the Gondwana margin, deformed granitoids in the southern Antarctic Peninsula. U–Pb SHRIMP dating of zircons from a microgranite dyke yields a crystallization age of 106.9± 1.1 Ma. This result and re-interpretation of the structural position of another granite pluton date the Palmer Land event, and probable terrane collision, as late Early Cretaceous, and not latest Jurassic as formerly interpreted. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Palmer Land Natural Environment Research Council: NERC Open Research Archive Antarctic Antarctic Peninsula Palmer Land ENVELOPE(-65.000,-65.000,-71.500,-71.500) Journal of the Geological Society 159 2 113 116
institution Open Polar
collection Natural Environment Research Council: NERC Open Research Archive
op_collection_id ftnerc
language unknown
description New structural and age data suggest that West Gondwana may have been at lower palaeolatitudes than previously interpreted from Albian sequences in Gondwana marginal suspect terranes. The Palmer Land event, which juxtaposed Mesozoic terranes on the Gondwana margin, deformed granitoids in the southern Antarctic Peninsula. U–Pb SHRIMP dating of zircons from a microgranite dyke yields a crystallization age of 106.9± 1.1 Ma. This result and re-interpretation of the structural position of another granite pluton date the Palmer Land event, and probable terrane collision, as late Early Cretaceous, and not latest Jurassic as formerly interpreted.
format Article in Journal/Newspaper
author Vaughan, Alan P.M.
Pankhurst, Robert J.
Fanning, C.Mark
spellingShingle Vaughan, Alan P.M.
Pankhurst, Robert J.
Fanning, C.Mark
A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes
author_facet Vaughan, Alan P.M.
Pankhurst, Robert J.
Fanning, C.Mark
author_sort Vaughan, Alan P.M.
title A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes
title_short A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes
title_full A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes
title_fullStr A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes
title_full_unstemmed A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes
title_sort mid-cretaceous age for the palmer land event, antarctic peninsula: implications for terrane accretion timing and gondwana palaeolatitudes
publisher Geological Society of London
publishDate 2002
url http://nora.nerc.ac.uk/id/eprint/17478/
http://jgs.geoscienceworld.org/content/159/2/113.abstract
long_lat ENVELOPE(-65.000,-65.000,-71.500,-71.500)
geographic Antarctic
Antarctic Peninsula
Palmer Land
geographic_facet Antarctic
Antarctic Peninsula
Palmer Land
genre Antarc*
Antarctic
Antarctic Peninsula
Palmer Land
genre_facet Antarc*
Antarctic
Antarctic Peninsula
Palmer Land
op_relation Vaughan, Alan P.M.; Pankhurst, Robert J.; Fanning, C.Mark. 2002 A mid-Cretaceous age for the Palmer Land event, Antarctic Peninsula: implications for terrane accretion timing and Gondwana palaeolatitudes. Journal of the Geological Society, 159 (2). 113-116. https://doi.org/10.1144/0016-764901-090 <https://doi.org/10.1144/0016-764901-090>
op_doi https://doi.org/10.1144/0016-764901-090
container_title Journal of the Geological Society
container_volume 159
container_issue 2
container_start_page 113
op_container_end_page 116
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