Sills of black dolerite (a basic igneous rock) intruded into buff-coloured Beacon sandstones, Finger Mountain, Victoria Land. These rocks herald the break-up of Gondwana in the Jurassic Period.
Back to the thumbnails · Next »
Updated 2011-06-30· © Glaciers online · J. Alean · M. Hambrey
Hosted by Metanet