Ductile deformation and rheology of sub-continental mantle in a hot collisional orogeny: Example from the Bohemian Massif

0365163 - GFÚ 2013 RIV GB eng J - Journal Article
Kusbach, V. - Ulrich, Stanislav - Schulmann, K.
Ductile deformation and rheology of sub-continental mantle in a hot collisional orogeny: Example from the Bohemian Massif.
Journal of Geodynamics. Roč. 56-57, May (2012), s. 108-123. ISSN 0264-3707
R&D Projects: GA ČR GA205/09/0539
Institutional research plan: CEZ:AV0Z30120515
Keywords : olivine lattice preferred orientation * peridotite mylonite * crust-mantle coupling * Variscan orogen * strain
Subject RIV: DB - Geology ; Mineralogy
Impact factor: 2.967, year: 2012

Fabric patterns of strongly serpentinized peridotite were determined using eigenvector analysis and eigenvalue classification of lattice preferred orientation of olivine and orthopyroxene. This approach has been applied to a rootless fold-shaped body of mylonitized spinel to garnet peridotite surrounded by fine-grained and partially retrogressed ky–kfs granulite. The EBSD data show either axial [0 1 0] or [1 0 0](0 k l) pattern, both characteristic for ‘dry’ slip systems. The former pattern occurs predominantly along the inner margin and southern limb while the latter is mainly developed in the hinge of the fold shaped body.
Permanent Link: http://hdl.handle.net/11104/0200469