Journal
TECTONICS
Volume 25, Issue 4, Pages -Publisher
AMER GEOPHYSICAL UNION
DOI: 10.1029/2005TC001898
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[ 1] The active tectonics at the front of the southern Apennines and in the Adriatic foreland is characterized by E-W striking, right-lateral seismogenic faults, interpreted as reactivated inherited discontinuities. The best studied among these is the Molise-Gondola shear zone. The interaction of these shear zones with the Apennines chain is not yet clear. To address this open question, we developed a set of scaled analogue experiments, aimed at analyzing ( 1) how dextral strikeslip motion along a preexisting zone of weakness within the foreland propagates toward the surface and affects the orogenic wedge; ( 2) the propagation of deformation as a function of displacement; and ( 3) any insights on the active tectonics of southern Italy. Our results stress the primary role played by these inherited structures when reactivated and confirm that regional E-W dextral shear zones are a plausible way of explaining the seismotectonic setting of the external areas of the southern Apennines.
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