The basinal San Cassiano Formation (Triassic, Dolomites, Italy) is interfingered with clinostratified megabreccia slope deposits of coeval carbonate platforms, and to a large extent is composed of metre-scale thickening, coarsening-upward cycles. These asymmetrical cycles, often representing bundles of five coarsening-upward sequences, are interpreted as platformbasin interactions governed by fourth- and fifth-order eustatic oscillations. According to this model, progradation of Triassic platforms of the Dolomites occurred mainly during fourthorder sea-level lowstands.

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