Université de Neuchâtel

Structures et déformation alpine dans les granités hercyniens du massif du Gothard (Alpes centrales suisses)

Marquer, Didier

In: Eclogae Geologicae Helvetiae, 1990, vol. 83, no. 1, p. 77-97

The hercynian granite bodies of the Gotthard Massif recorded a heterogeneous ductile deformation under amphibolite facies conditions during Tertiary Alpine collision. Structural analysis is focussed on the central and western parts of the Gotthard Massif. The analysis of the pattern and the sense of shear of ductile shear zones in granitic rocks defines: (1) the shape of the finite strain...

Université de Neuchâtel

Rb-Sr mica ages in the Alpine shear zones of the Truzzo granite: Timing of the Tertiary alpine P-T-deformations in the Tambo nappe (Central Alps, Switzerland)

Marquer, Didier ; Baudin, Thierry ; Peucat, Jean-Jacques ; Persoz, Francis

In: Eclogae Geologicae Helvetiae, 1994, vol. 87, no. 1, p. 225-229

The Truzzo granite, located in the southern part of the Tambo nappe, has recorded the Tertiary history of Alpine deformation. Rb-Sr whole rock dating method of this late Variscan complex leads to an age of intrusion around 280 Ma. During the Tertiary deformation, the Truzzo granite has undergone a finite heterogeneous strain at all scales. The study of Rb-Sr ages on micas from shear zones of the...

Université de Neuchâtel

Structures et cinématique des déformations alpines dans le granité de Truzzo (Nappe de Tambo : Alpes centrales suisses)

Marquer, Didier

In: Eclogae Geologicae Helvetiae, 1991, vol. 84, no. 1, p. 107

The prealpine Truzzo granitic complex has suffered the alpine deformation history of the Tambo nappe. Strain is heterogeneous at all scales. Analysis of the principal direction of finite strain, analysis of shear zones patterns and kinematics, and the observation of superposed structures allow to propose the following alpine deformation history: i) Ductile Dl deformation is pervasive at the...