Evidence for pre-Jurassic subduction in western Antarctica

The South Shetland Islands (from King George Island to Livingston Island) are situated on a small crustal plate bounded by incipient back-arc spreading along the axis of Bransfield Strait to the east, a well defined oceanic trench to the west (along which subduction has apparently now ceased) and tr...

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Bibliographic Details
Published in:Nature
Main Authors: Smellie, J.L., Clarkson, P.D.
Format: Article in Journal/Newspaper
Language:unknown
Published: 1975
Subjects:
Earth Sciences
King George Island
South Shetland Islands
Bransfield Strait
Livingston Island
Smith Island
Antarc*
Antarctica
Online Access:http://nora.nerc.ac.uk/id/eprint/525858/
https://doi.org/10.1038/258701a0
Description
Summary:The South Shetland Islands (from King George Island to Livingston Island) are situated on a small crustal plate bounded by incipient back-arc spreading along the axis of Bransfield Strait to the east, a well defined oceanic trench to the west (along which subduction has apparently now ceased) and transverse faulting to the north and south1 (Fig. 1), The discovery of glaucophane-schists on Smith Island (Fig. 1, inset) suggests that subduction may have begun as early as the Upper Palaeozoic.

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