Distribution and succession of Jurassic rocks in Gora Dongar, Pachchham 'Island', Kachchh, India

Its prolific fossil fauna and well exposed sedimentary sequence make Kachchh, a Mesozoic pericratonic basin at the western margin of the Indian plate, one of the classic areas of Jurassic geology. The Jurassic sediments represent, for their most part, shallow, largely nearshore shelf environments characterized by a moderately rich bivalve-dominated fauna. An exception is the Eomiodon Red Sandstone Member, which is characterized by brackish biota and contains interludes of non-marine coastal plain sedimentation.