Smellie, J.L.; Clarkson, P.D.. 1975 Evidence for pre-Jurassic subduction in western Antarctica. Nature, 258 (5537). 701-702. 10.1038/258701a0
Abstract
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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