Description
Similar to Cooper Island Fm. comprising sub-arkosic sandstones to sub- uartzose greywackes derived from a plutonic and metamorphic terrane. Outcrops within the Cooper Bay Shear Zone reveal a gradation from clastic to volcaniclastic composition. Generally exhibits a low regional metamorphic grade (low greenschist) (Storey, 1983)1.
Age
Pre-Jurassic
Map Reference
Curtis, M. L. Geological Map of South Georgia (1:250 000 scale). Sheet 4, (British Antarctic Survey, 2011). Available here.
References
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Storey, B. C. The geology of South Georgia: V. Drygalski Fjord Complex. Br. Antarct. Surv. Sci. Rep. 107, 88pp (1983). ↩