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Abstract:

The Jenolan Caves occur in a small impounded fluviokarst developed in limestone of late Silurian age. This paper reviews present knowledge of the geomorphology of Jenolan. The surface and underground geomorphology has been strongly influenced by the lithology and structure of the limestone and the non-carbonate rocks that surround the karst. There is evidence in the present geomorphology of the inheritance of influences from palaeo landscapes. Abundant surficial and cave sediments reflect slope gradients and climatic conditions that have existed in the past. Despite the very limited size of the limestone outcrop there is a great variety in the karst, including many kilometres of underground passage and a range of cave morphologies and clastic and chemical sediments underground.