Abstract

A transitional sequence between the carbonatic platform and the pelagic domain in the Montagnola di Frosolone and the Matese Massif. Above a Triassic-Oligocene dolomitic and calcareous multilayer, mostly characterised by brittle deformation, the Oligocene-Langhiano marls of Macchiagodena Formation play an important role for the structural style, acting as a major weakness level. Detailed, geological survey (1:10.000 scale) allows us to lay out an updated structural map. Thrust tectonics prevails as it is showed by macro-folds around the main thrust front and by meso-scale folds, cleavage; reverse faults, S-C tectonites. WNW-ESE and N-S normal and transtensive faults, cutting the compressive features, complete the tectonic pattern. Fault-propagation folding model has been successfully applied in the reconstruction of geometric relationships between northern Matese and Montagnola. The small amount of displacement suggests the absence of a major thrust-zone and a general structural continuity among those two regions. The reinterpretation of the stratigraphy of Frosololone 1 and 2 wells and the analysis of few seismic lines make possible the construction of a cross section throughout the Montagnola di Frosolone. Original field data point out the presence of two new thrusts along its south-eastern edge.

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