The kinematic and the rheological properties of an early-Alpine strikeslipmylonitic shear zone (i.e. Palmi Shear Zone) have been hereinvestigated with the aim to contribute to constrain the former Alpineevolutionary stages of southern Calabrian geodynamics.Relics of these early-Alpine deep strike-slip tectonics are probablywidespread distributed around the peri-Mediterranean chains as aconsequence and/or as a precursor of the Alpine back-arc basin expansion.Nevertheless, these deep seated junction bands are resulted rarelypreserved due to the pervasive activity of the following tectonics.For this reason the Palmi Shear Zone can be considered a witnesssurvivor of the embryonic strike-slip movement that controlled theformation of the present-day arcuate shape of the internal sector of thissouthern Alpine chain segment, contributing at the same time to thepresent-day juxtaposition of differently evolved crystalline basementterranes. In this view, an integrated meso- micro-structural studyaccompanied by quartz c-axis orientation pattern analysis of myloniteshave been carried out, in order to preliminarily constrain the temperatureand the kinematic of the shearing activity.

Geo-Petro-Structural study of the Palmi shear zone: Kinematic and rheological implications

ORTOLANO, GAETANO
Primo
Writing – Original Draft Preparation
;
CIRRINCIONE, ROSOLINO;PEZZINO, Antonino;
2013-01-01

Abstract

The kinematic and the rheological properties of an early-Alpine strikeslipmylonitic shear zone (i.e. Palmi Shear Zone) have been hereinvestigated with the aim to contribute to constrain the former Alpineevolutionary stages of southern Calabrian geodynamics.Relics of these early-Alpine deep strike-slip tectonics are probablywidespread distributed around the peri-Mediterranean chains as aconsequence and/or as a precursor of the Alpine back-arc basin expansion.Nevertheless, these deep seated junction bands are resulted rarelypreserved due to the pervasive activity of the following tectonics.For this reason the Palmi Shear Zone can be considered a witnesssurvivor of the embryonic strike-slip movement that controlled theformation of the present-day arcuate shape of the internal sector of thissouthern Alpine chain segment, contributing at the same time to thepresent-day juxtaposition of differently evolved crystalline basementterranes. In this view, an integrated meso- micro-structural studyaccompanied by quartz c-axis orientation pattern analysis of myloniteshave been carried out, in order to preliminarily constrain the temperatureand the kinematic of the shearing activity.
2013
Calabrian Peloritani Orogen, Mediterranean geodynamics, Mylonitic microstructure, Quartz c-axis orientation pattern.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.11769/70545
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