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dc.contributor.authorKratinova, Z.en_GB
dc.contributor.authorJezek, J.en_GB
dc.contributor.authorSchulmann, K.en_GB
dc.contributor.authorHrouda, F.en_GB
dc.contributor.authorShail, RKen_GB
dc.contributor.authorLexa, O.en_GB
dc.date.accessioned2012-06-27T09:55:36Zen_GB
dc.date.accessioned2012-09-28T18:01:23Zen_GB
dc.date.accessioned2013-03-20T12:57:33Z
dc.date.issued2010-09-28en_GB
dc.description.abstractA 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 pluton scale. Quantitative microstructural analysis suggests that the AMS fabric is controlled by deformation of the partially crystallized matrix, resulting from the combined effects of late internal adjustment within the pluton and regional deformation. A general model of fabric development associated with a vertical pure-shear overprint on a variable vertical fabric is evaluated by numerical modeling. The study demonstrates how the memory of different fabric elements may be dependent upon their grain size, crystallization sequence and recorded previous strain.en_GB
dc.identifier.citationVol. 115 (B9), article B09104en_GB
dc.identifier.doi10.1029/2009JB006714en_GB
dc.identifier.urihttp://hdl.handle.net/10036/3782en_GB
dc.publisherAmerican Geophysical Union (AGU)en_GB
dc.subjectAnisotropy of magnetic susceptibility (AMS)en_GB
dc.subjectMagmatic fabricen_GB
dc.subjectK-feldspar preferred orientationen_GB
dc.subjectReflection goniometryen_GB
dc.subjectLand's End graniteen_GB
dc.titleNon-coaxial K-feldspar and AMS sub-fabrics in the Land's End Granite, Cornwall: evidence of magmatic fabric decoupling during late deformation and matrix crystallizationen_GB
dc.date.available2012-06-27T09:55:36Zen_GB
dc.date.available2012-09-28T18:01:23Zen_GB
dc.date.available2013-03-20T12:57:33Z
exeter.article-numberB09104en_GB
dc.descriptionReproduced with permission of the publisher. Copyright © 2010 American Geophysical Unionen_GB
dc.identifier.eissn2156–2202en_GB
dc.identifier.journalJournal of Geophysical Research - Solid Earthen_GB


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