Microstructures, deformation mechanisms and seismic properties of a Palaeoproterozoic shear zone: The Mertz shear zone, East-Antarctica

• Published in: Tectonophysics
• Main Authors: Lamarque, Gaëlle, Bascou, Jerôme, Maurice, Claire, Cottin, Jean-Yves, Riel, Nicolas, Ménot, René-Pierre
• Other Authors: Laboratoire Magmas et Volcans (LMV), Institut national des sciences de l'Univers (INSU - CNRS)-Université Jean Monnet Saint-Étienne (UJM)-Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Observatoire de Physique du Globe de Clermont-Ferrand (OPGC), Université Blaise Pascal - Clermont-Ferrand 2 (UBP)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Centre Science des Matériaux et des Structures (SMS-ENSMSE), École des Mines de Saint-Étienne (Mines Saint-Étienne MSE), Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT), Laboratoire Georges Friedel (LGF-ENSMSE), Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT)-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), PMM-ENSMSE- Département Physique et Mécanique des Matériaux, Department of Earth Sciences Durham, Durham University
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2016
• Subjects: Crustal deformation; Shear zone; Microstructures Crystallographic preferred orientation (CPO); East Antarctica; Strain localization; LATTICE-PREFERRED ORIENTATION; AMPHIBOLE-RICH ROCKS; MAGMA EMPLACEMENT; METAMORPHIC BELT; ORTHO-PYROXENE; LOWER-CRUSTAL; UPPER-MANTLE; PALEOPROTEROZOIC TECTONICS; CRYSTALLOGRAPHIC FABRICS; MAGNETIC-SUSCEPTIBILITY; [SPI.MAT]Engineering Sciences [physics]/Materials; Tac; The ''Y''; Antarc*; Antarctica
• Online Access: https://hal-emse.ccsd.cnrs.fr/emse-01505345; https://doi.org/10.1016/j.tecto.2016.05.011

International audience The Mertz shear zone (MSZ) is a lithospheric scale structure that recorded mid-crustal deformation during the 1.7 Ga orogeny. We performed a microstructural and crystallographic preferred orientation (CPO) study of samples from both mylonites and tectonic boudins that constitu...