The Mt. Vettore area is located in the Central Apennines (Italy), a region characterized by intense seismic activity that has recorded multiple moderate-to-high magnitude seismic sequences. The seismic activity is due to the presence of normal fault systems, among which is the Mt. Vettore Fault System (VFS), which was last activated during the 2016-17 Central Italy seismic sequence. Moreover, the region has experienced three major tectonic phases over geological history, thus it is important to unravel their contribution to the current fracture network. Based on the integration of field observation with Unmanned Aerial Vehicle - Digital Photogrammetry data, we aim to analyze the fracture network on eight different outcrops located at different structural positions with respect to VFZ. Results show that the Late Miocene−Early Pliocene compressional phase deeply affected the present-day fracture pattern, which is especially related to the evolution of the Mt. Sibillini regional thrust and its related anticline. The present-day Quaternary extensional phase, and the associated normal faults, mostly reactivate some of the pre-existing fracture sets.
Bibliographical noteKAUST Repository Item: Exported on 2022-07-05
Acknowledgements: We would like to thank Samuel T. Thiele and an anonymous Reviewer. Their comments and suggestions have helped us to improve the quality of the manuscript. We would also like to thank Giovanni Toscani, Massimiliano Rinaldo Barchi, Carlo Alberto Brunori, Amerigo Corradetti, Francesco Zucca and Cesare Perotti for the useful and fruitful discussions. We would also like to thank Juliet Aber for the non-technical review of the manuscript.
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