0381744 - GFÚ 2013 RIV DE eng J - Journal Article
Kratinová, Zuzana - Schulmann, K. - Edel, J.-B. - Tabaud, A.-S.
AMS record of brittle dilation, viscous-stretching and gravity-driven magma ascent in area of magma-rich crustal extension (Vosges Mts., NE France).
International Journal of Earth Sciences. Roč. 101, č. 3 (2012), s. 803-817. ISSN 1437-3254. E-ISSN 1437-3262
R&D Projects: GA AV ČR KJB300120702
Institutional research plan: CEZ:AV0Z30120515
Keywords : anisotropy of magnetic susceptibility * crustal extension * magmatic fabrics * carboniferous
Subject RIV: DB - Geology ; Mineralogy
Impact factor: 2.261, year: 2012 ; AIS: 0.876, rok: 2012
DOI: https://doi.org/10.1007/s00531-011-0711-x

Orogenic compression-related fabrics were reworked during regional extensional deformation in a large anatectic crustal domain of the Central Vosges (NE France). The extension was first accommodated by brittle dilation affecting vertically anisotropic high-grade rocks associated with emplacement of subvertical granitic sheets. The AMS fabric of granitoids is consistent with highly partitioned transtensional deformation marked by alternations of flat and steep foliations and development of orthogonal lineations. This deformation passes to top-to-the-southwest ductile shearing expressed in southerly migmatitic middle crust. The AMS fabric revealed moderately west-dipping foliations bearing subhorizontal NNW–SSE-trending lineations and predominantly plane strain to prolate shapes. This fabric pattern is interpreted as a viscous response of stretched partially molten crust during continuous ductile extension.
Permanent Link: http://hdl.handle.net/11104/0212143