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Authors: Billi, A.* 
Tiberti, M. M.* 
Cavinato, G. P.* 
Cosentino, D.* 
Di Luzio, E.* 
Keller, J. V. A.* 
Kluth, C.* 
Orlando, L.* 
Parotto, M.* 
Praturlon, A.* 
Romanelli, M.* 
Storti, F.* 
Wardell, N.* 
Title: First results from the CROP-11 deep seismic profile, central Apennines, Italy: evidence of mid-crustal folding
Journal: Journal of the Geological Society, London 
Series/Report no.: 163
Issue Date: 2006
Keywords: CROP project
seismic reflection profile
mid-crustral folding
central Apennines
deep crust
Subject Classification04. Solid Earth::04.02. Exploration geophysics::04.02.99. General or miscellaneous 
04. Solid Earth::04.03. Geodesy::04.03.01. Crustal deformations 
04. Solid Earth::04.04. Geology::04.04.09. Structural geology 
04. Solid Earth::04.07. Tectonophysics::04.07.07. Tectonics 
Abstract: The CROP-11 deep seismic profile across the central Apennines, Italy, reveals a previously unknown, mid-crustal antiform here interpreted as a fault-bend fold-like structure. The seismic facies and gravity signature suggest that this structure consists of low-grade metamorphic rocks. Geomorphological, stratigraphic and tectonic evidence in the overlying shallow thrusts suggests that this structure developed in early to mid-Messinian time and grew out of sequence in late Messinian– Pliocene time. The out-of-sequence growth may reflect a taper subcriticality stage of the Apenninic thrust wedge, which induced renewed contraction in the rear.
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