Description
Radiolarian-rich mudstones and interbedded tuffs of Kimmeridgian - Berriasian age. Exposed at scattered locations along the eastern margin (e.g. Sobral Peninsula and Joinville Island) of Graham Land reaching a maximum thickness of 800m.
Age
Late Jurassic
Map Reference
Riley, T. R., Flowerdew, M. J. & Haselwimmer, C. E. Geological Map of Eastern Graham Land, Antarctic Peninsula (1:625 000 scale). Sheet 1, (British Antarctic Survey, 2011). Available here.