Limestone, Transition.—Colour, blue. East Coast of St. Vincent's Gulf. Formation near the first inlet. Continuing to the base of the Ranges.
Clay Slate.—Composition of the lower part of the Mount Lofty Range.
Granite.—Fine grained, red; forms the higher parts of the Mount Lofty Range.
Quartz, with Tourmaline.—Lower parts of the Mount Lofty Range.
Limestone Flustra, and their Corallines, probably tertiary.—From the mouth of the Sturt, on the coast line, nearly abreast of Mount Lofty.