Feldspar deformation in greenschist facies shear zones (Aar-Massif, Switzerland)

Hauten, Sarah
Handy, Mark R.
Dobmeier, Christoph
2006-03
Universitätsverlag Göttingen
Article in Anthology
Verlagsversion
Deutsch
11. Symposium "Tektonik, Struktur- und Kristallingeologie"
DOI: https://doi.org/10.23689/fidgeo-1848
Hauten, Sarah; Handy, Mark R.; Dobmeier, Christoph, 2006-03: Feldspar deformation in greenschist facies shear zones (Aar-Massif, Switzerland). In: Philipp, S.; Leiss, B; Vollbrecht, A.; Tanner, D.; Gudmundsson, A. (eds.): 11. Symposium "Tektonik, Struktur- und Kristallingeologie"; 2006, Univ.-Verl. Göttingen, p. 84 - 85., DOI https://doi.org/10.23689/fidgeo-1848.
 
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Granitic gneisses of the Central Aar Granite host a shear zone network that formed at greenschist facies conditions. The work area is located in the Bächlital (Grimsel area, Central Switzerland) and was chosen for the analysis of shear zones because of the weakly anisotropic fabric of the host gneisses. Contrary to previous publications (e.g. Choukroune & Gapais, 1983), none of these host rocks are undeformed. They contain a penetrative foliation (S1) that strikes consistently ENE-WSW with a steep dip of around 70° to the south. This foliation is overprinted by the aforementioned shear zone network, which was the main focus of this study...
Collection
Subjects:
Aarmassiv
Scherzone
Granitgneis
Feldspäte
Deformation <Geologie>
Gesteinsdeformation {Strukturgeologie}
Gefügekunde der Gesteine
Metamorphe Komplexe, Alpen {Petrologie}
Schweizer Alpen {Geologie}
Metamorphite aus sauren bis intermediären Edukten {Petrologie}
Produkte mechanischer Deformation {Petrologie}