Thrust Belt Evolution of
Barbullushi, Roland, Consultant,
This presentation addresses questions that include those relating to the subsurface geometric patterns of the thrust sheets, the kinematic framework the evaporites operated in, the role of the pre-existing faults and the timing of the evolution. This is done by constructing 14 regional cross sections as well as analysing fault slip data and structural relationships between thrust sheets and the foreland basin. A large data base of seismic profiles and wells as well as structural and kinematic data collected in the field is used.
Their integrated analysis demonstrates that significant along - strike changes characterize the subsurface geometry of the thrust sheets. The Permo-Triassic evaporites facilitated their buttressing towards a buffer zone in the Apulian foreland under a rotational transpressional â “ compression regime. Pre-existing normal faults played a significant role on thrusting, accomodation of the strain partitioning and were inverted under the influence of a regional shear couple. The main structural events included thin-skinned thrusting during Oligocene â “ Aquitaniane, formation of a buffer zone in the foreland during Burdigalian and subsequent thrust - buttressing during the Miocene.