| Summary: | A sedimentological and bed thickness statistical approach of Upper Cretaceous (Senonian) limestones was performed for breccia and calciturbidite deposits, which constitute part of the syn-rift succession of the Ionian Basin, in the Ithaca island, Western Greece. The interpretation of depositional sub-environments suggests channelized breccia, originated from the Pre-Apulian platform. Calciturbidites are considered as the outcome of shelf-edge break and deposited in the proximal fan. Tectonic activity determined the S - N orientation of the deposits, as ENE - WSW transfer faults intersected the NNW - SSE normal faults. Exponential distribution seems to characterize best the outcrop bed thicknesses. It is proposed that only one provenance feeding the basin with debris flow from the tectonically shaped platform. The outcrop is characterized by partially ordered or disordered facies stacking patterns and no evidence of thickness trend is proposed. Thick packages of breccia and calcarenite, frequent amalgamation surfaces, parallel and perpendicular to bedding stylolites and chert nodules as diagenetic evidence, render this formation as prone of reservoir potential in Western Greece.
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