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The mechanism of flow and fabric development in mechanically anisotropic trachyte lava

SYSNO ASEP	0330476
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	The mechanism of flow and fabric development in mechanically anisotropic trachyte lava
Author(s)	Závada, Prokop (GFU-E)_{ORCID, RID} Schulmann, K. (FR) Lexa, O. (CZ) Hrouda, F. (CZ) Haloda, J. (CZ) Týcová, P. (CZ)
Source Title	Journal of Structural Geology. - : Elsevier - ISSN 0191-8141 Roč. 31, č. 11 (2009), s. 1295-1307
Number of pages	13 s.
Language	eng - English
Country	GB - United Kingdom
Keywords	trachyte ; anisotropy of magnetic susceptibility ; fibre-slip mechanism ; lava dome ; mechanical anisotropy ; sanidine
Subject RIV	DB - Geology ; Mineralogy
R&D Projects	KJB301110703 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z30120515 - GFU-E (2005-2011)
UT WOS	000272640400003
DOI	10.1016/j.jsg.2009.04.002
Annotation	Anisotropy of magnetic susceptibility (AMS) and Electron back-scattered diffraction (EBSD) of magnetite and sanidine fabrics throughout an eroded trachyte lava dome in Tertiary volcanic province of the NW Czech Republic revealed two fabric types. The high degree of AMS fabric is associated with sanidine textural domains similar to normal kink bands and occupies the whole body except the SW margin. Folded fabric and low anisotropy of AMS also in the SW margin reveals sanidine alignment domains resembling reverse kink-bands. The flow of trachyte lava occurred via simultaneous slip of sanidine crystal along their planes and also by readjustment of the textural domain boundaries according to the fibre-slip theory.
Workplace	Geophysical Institute
Contact	Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028
Year of Publishing	2010

Number of the records: 1