Gambier Karst Region - South Australia & Victoria

Dune Limestone Caves

Selected photographs and diagrams

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Horizontal bedding: a beach calcarenite associated with the dune limestone.
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Syngenetic subsidence structures in thin-bedded beach sands. These would have been moving before the sand was completly cemented. They have since been bettter cemented and are capable of holding up the cave roof.
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Another example of syngenetic subsidence structures
with patches of moonmilk
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Horizontal ceiling has been cut through dune bedding. This would have been an old water table.
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Low horizontal cave development at the base of a dune, at the level of an adjoining swamp
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Abandoned stream passage just above the contact between dune limestone and an underlying basalt flow.
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