THE KINEMATICS OF THE LATE ALPINE MURETTO FAULT AND ITS RELATION TO DEXTRAL TRANSPRESSION ACROSS THE PERIADRIATIC LINE

Authors
Citation
U. Ring, THE KINEMATICS OF THE LATE ALPINE MURETTO FAULT AND ITS RELATION TO DEXTRAL TRANSPRESSION ACROSS THE PERIADRIATIC LINE, Eclogae Geologicae Helvetiae, 87(3), 1994, pp. 811-831
Citations number
72
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Geology
ISSN journal
0012-9402
Volume
87
Issue
3
Year of publication
1994
Pages
811 - 831
Database
ISI
SICI code
0012-9402(1994)87:3<811:TKOTLA>2.0.ZU;2-C
Abstract
The late Alpine (post-Bergell) N30-degrees-W-striking Muretto fault is a dextral oblique-normal fault which is kinematically compatible with some minor faults immediately north and east of the Bergell pluton. T heir kinematics are due to oblique eastsoutheast-directed principal ex tension and also oblique northeasterly-directed contraction. The kinem atic evolution of the adjacent N50-degrees-E-striking sinistral obliqu e-reverse Engadine line is similar. The kinematics of indentation of t he Adriatic plate and associated dextral transpression across the E-W trending Periadriatic line is different, with northeast-directed exten sion and shortening oriented NW-SE. It is suggested that the intrusion and simultaneous to subsequent rapid uplift and dextral displacement of the Bergell pluton, the intrusion of which is kinematically related to movement at the Periadriatic line, created a local, near-field kin ematic framework which controlled faulting at the Muretto and related faults at its northeastern tip.