Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/8277
Authors: | Vignaroli, G.* Minelli, L.* Rossetti, F.* Balestrieri, M. L.* Faccenna, C.* |
Title: | Miocene thrusting in the eastern Sila Massif: Implication for the evolution of the Calabria-Peloritani orogenic wedge (southern Italy) | Journal: | Tectonophysics | Series/Report no.: | /538-540 (2012) | Publisher: | Elsevier Science Limited | Issue Date: | 2012 | DOI: | 10.1016/j.tecto.2012.03.011 | Keywords: | AFT thermochronology orogenic wedge Calabria-Peloritani Arc |
Subject Classification: | 04. Solid Earth::04.04. Geology::04.04.09. Structural geology | Abstract: | Alpine orogens in the central Mediterranean region have revealed the concomitance of crustal extension in back-arc domain and crustal shortening in frontal domain. Quantitative data of deformation in the frontal orogenic wedges are necessary to understand how the shortening-extension pair evolves in terms of structures, orogenic transport, timing, and exhumation rate. This paper deals with kinematics and ages of the frontal thrust systems of the Calabria-Peloritani Arc (Italy) exposed in the eastern Sila Massif. We first present structural fieldwork, onshore and offshore well log data, and new apatite fission-track (AFT) thermochronology. Then, we describe the structural architecture of the studied area as an ENE-verging stacking of thrust sheets involving basement units and syn-orogenic sediments. The AFT study documents that thrust sheets entered the partial annealing zone from 18 Ma to 13 Ma. This Early-Middle Miocene thrusting phase was coeval with exhumation of high-pressure/low temperature metamorphic rocks in the hinterland of the orogen (Coastal Chain area), mainly driven by top-to-the-W extensional tectonics. Opposite kinematic shear senses (contractional top-to-the-E and extensional top-to-the-W) and different exhumation rates (slow in the frontal, more rapid in the hinterland) are framed in a tectonic scenario of a critically tapered orogenic wedge during the eastward retreating of the Apennine slab. |
Appears in Collections: | Article published / in press |
Files in This Item:
File | Description | Size | Format | Existing users please Login |
---|---|---|---|---|
Vignaroli et al., 2012.pdf | main article | 4.57 MB | Adobe PDF |
WEB OF SCIENCETM
Citations
50
16
checked on Feb 10, 2021
Page view(s)
230
checked on Apr 24, 2024
Download(s)
29
checked on Apr 24, 2024