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Noncoaxial K-feldspar and AMS subfabrics in the Land’s End granite, Cornwall: Evidence of magmatic fabric decoupling during late deformation and matrix crystallization

SYSNO ASEP	0348502
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Noncoaxial K-feldspar and AMS subfabrics in the Land’s End granite, Cornwall: Evidence of magmatic fabric decoupling during late deformation and matrix crystallization
Author(s)	Kratinová, Zuzana (GFU-E)_{ORCID, RID} Ježek, J. (CZ) Schulmann, K. (FR) Hrouda, F. (CZ) Shail, R. K. (GB) Lexa, O. (CZ)
Source Title	Journal of Geophysical Research - ISSN 0148-0227 Roč. 115, B9 (2010), B09104/1-B09104/21
Number of pages	21 s.
Language	eng - English
Country	US - United States
Keywords	triaxial ellipsoidal particles ; magnetic susceptibility ; theoretical models
Subject RIV	DB - Geology ; Mineralogy
R&D Projects	KJB300120702 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z30120515 - GFU-E (2005-2011)
UT WOS	000282512200002
DOI	10.1029/2009JB006714
Annotation	A comparative study of the anisotropy of magnetic susceptibility (AMS) and K-feldspar phenocryst fabrics in the Land's End granite demonstrates that the AMS fabric predominantly reflects late magmatic deformation. Tensor analysis of the K-feldspar fabric shows a complex pattern, characterized by meter-scale variations in orientation, symmetry, and intensity, mainly related to heterogeneous flow of the phenocryst-rich magma during emplacement. In contrast, the AMS fabric is predominantly homogenous, subhorizontal, and oblate, and is stable at the pluton scale.
Workplace	Geophysical Institute
Contact	Hana Krejzlíková, kniha@ig.cas.cz, Tel.: 267 103 028
Year of Publishing	2011

Number of the records: 1