Triassic reservoirs are underexplored in the eastern half of the province.
Fractures can increase permeability by as much as an order of magnitude in these carbonates. Tertiary and Quaternary siliciclastic reservoir rocks are predominantly turbidite deposits of the Alpine and Apennine foredeeps and forelands, which cover most of the province. Reservoir rocks range from silty, fine-grained sandstones to local conglomerates that were commonly deposited along the long axes of syndepositional synclines. Onlaps and truncations are common. Cenozoic siliciclastic reservoirs are sealed by contiguous deep-marine shales and impermeable sandstones, generally meters to tens of meters thick.