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Seismotectonics of the Southern Apennines and Adriatic foreland: insights on active regional E-W shear zones from analogue modeling
Author(s)
Language
English
Status
Published
Peer review journal
Yes
Title of the book
Issue/vol(year)
25 (2006)
Publisher
American Geophysical Union
Pages (printed)
21
Issued date
August 11, 2006
Alternative Location
Subjects
Abstract
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 (MGsz). 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
strike-slip motion along a pre-existing 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; 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.
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 (MGsz). 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
strike-slip motion along a pre-existing 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; 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.
Sponsors
INGV, Università degli Studi di Pavia
Type
article
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