PUMA
Istituto di Geoscienze e Georisorse     
Perrone G., Cadoppi P., Tallone S., Balestro G. Post-collisional tectonics in the northern Cottian Alps (Italian western Alps). In: International Journal of Earth Sciences, vol. 100 (6) pp. 1349 - 1373. Springer, 2011.
 
 
Abstract
(English)
Field mapping and structural analysis have allowed us to characterise the fault geometry and the post-metamorphic tectonics of an area located in the Northern Cottian Alps (inner Western Alps). Two main faulting stages were distinguished here. The first (Oligocene?-Early Miocene) is related to the development of an E-W-striking left-normal shear zone. This shear zone is interpreted as an antithetical of two regional, N-S right-lateral structures: the Col del Lis-Trana Deformation Zone (LTZ) and the Colle delle Finestre Deformation Zone (CFZ). The second faulting stage (post-Early Miocene) is related mainly to the development of N-S normal faults, coeval with the extensional reactivation of the LTZ and the CFZ. We discuss this kinematic evolution in the framework of the geodynamic evolution of the Western Alps.
URL: http://www.springer.com/earth+sciences+and+geography/geology/journal/531
DOI: 10.1007/s00531-010-0534-1
Subject post-collisional tectonics
western Alps
faults
structural geology
Cottian Alps


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