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 suberiticality stage of the Apenninic thrust wedge, which induced renewed contraction in the rear.
First results from the CROP- 11 deep seismic profile, central Apennines, Italy: evidence of mid-crustal folding
Cavinato GP;Di Luzio E;
2006
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 suberiticality stage of the Apenninic thrust wedge, which induced renewed contraction in the rear.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
