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Three-Dimensional Visualization of the Neogene Structures of an External Sector of the Northern Apennines, Italy

¹ Università di Urbino, Facoltà di Scienze Ambientali, Campus scientifico, 61029 Urbino, Italy; dedonatis{at}geo.uniurb.it

Mauro De Donatis is a lecturer at the University of Urbino where he received a degree in geological sciences in 1987. He also received a postgraduate qualification in geological cartography in Bologna (1988) and an M.Sc. degree in basin evolution and dynamics from Royal Holloway (University of London, 1996). He has been a consultant for regional and national geological cartography projects. His current research is mainly focused on thrust and strike-slip tectonics and sedimentation in foreland basin settings, integrating fieldwork and interpretation of satellite images and seismic profiles with computer-assisted analysis and modeling.

A three-dimensional (3-D) visualization technique is used to build a structural model linking a complex series of thrust sheets in an external area of the northern Apennines, central Italy. This foreland fold and thrust belt consists of faulted anticlines and broad synclines, involving a Triassic-Paleogene succession that is detached from the underlying basement. Reactivation of basement faults has influenced the geometry and kinematics of the overlying structures in a mix of thin-skinned and thick-skinned tectonics. Upper detachment horizons within the sedimentary succession form shallow structures in the crestal zone of the major anticlines. All the struc tures are scantily cylindrical, and the model demonstrates the soft linkages between oblique and frontal structures through relay ramps.

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