3D structural modeling and restoration of the Apennine-Maghrebian chain in Sicily: Application for non-cylindrical fold-and-thrust belts

Attilio Sulli, Maurizio Gasparo Morticelli, William Sassi, Martina Balestra, Jean-Luc Rudkiewicz, William Sassi, Sveva Corrado, Luca Aldega

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Thirteen seismic reflection profiles and field observations have been used to build a three-dimensional watertight geological model of the sub-surface architecture of the Trapanese carbonate platform unit of the Apennine-Maghrebian chain in the Mt. Kumeta and Mt. Rocca Busambra (NW Sicily, Italy). Either a single step or a two-step thrust-fault deformation model is acceptable on the basis of seismic interpretation but the integration of 3D model reconstruction and 3D geomechanical restoration, validates only the scenario with a single stage of deformation. The 3D model highlights along strike variations of the structural style for the Trapanese unit where pre-existing discontinuities (e.g. inherited Mesozoic normal faults)played an important role in the preferential occurrence of hinterland verging structures. In detail, backthrusts (N-verging)are dissected by tear faults along the Mt. Kumeta structure whereas an imbricate backthrust system evolves into thrust along the Mt. Rocca Busambra structure. Shortening estimate indicates low amount of internal deformation affecting the carbonate platform unit (<15%). The combined approach of three-dimensional geological modeling and restoration allowed us to: (i)discriminate the best structural interpretation for the subsurface architecture of the Apennine-Maghrebian chain, detecting issues or inconsistencies in previous seismic interpretations and (ii)propose a valuable tool for hydrocarbon exploration to be applied in other complex structural areas worldwide.
Original languageEnglish
Pages (from-to)86-107
Number of pages22
JournalTectonophysics
Volume761
Publication statusPublished - 2019

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth-Surface Processes

Fingerprint Dive into the research topics of '3D structural modeling and restoration of the Apennine-Maghrebian chain in Sicily: Application for non-cylindrical fold-and-thrust belts'. Together they form a unique fingerprint.

Cite this