Lattice-preferred orientations of late-Variscan granitoids derived from neutron diffraction data: implications for magma emplacement mechanisms

0367548 - GLÚ 2012 RIV DE eng J - Článek v odborném periodiku
Müller, A. - Leiss, B. - Ullemeyer, K. - Breiter, Karel
Lattice-preferred orientations of late-Variscan granitoids derived from neutron diffraction data: implications for magma emplacement mechanisms.
International Journal of Earth Sciences. Roč. 100, č. 7 (2011), s. 1515-1532. ISSN 1437-3254. E-ISSN 1437-3262
Výzkumný záměr: CEZ:AV0Z30130516
Klíčová slova: neutron diffraction * lattice-preferred orientation * shape-preferred orientation * magmatic flow * Podlesí granite * Meissen massif
Kód oboru RIV: DB - Geologie a mineralogie
Impakt faktor: 2.342, rok: 2011

The lattice-preferred orientation (LPOs) of two late-Variscan granitoids, the Meissen monzonite and the Podlesí dyke granite, were determined from high-resolution time-of-flight neutron diffraction patterns gained at the diffractometer SKAT in Dubna, Russia. The results demonstrate that the method is suitable for the LPO analysis of polyphase, relatively coarse-grained (0.1–6 mm) rocks. The Meissen monzonite has a prominent shape-preferred orientation (SPO) of the non-equidimensional minerals feldspar, mica and amphibole, whereas SPO of the Podlesí granite is unapparent at the hand-specimen scale. The neutron diffraction data revealed distinct LPOs in both granitoids. The LPO of the non-equidimensional minerals feldspar, mica and amphibole developed mainly during magmatic flow.
Trvalý link: http://hdl.handle.net/11104/0202188