Effect of plastic deformation in laboratory conditions on magnetic anisotropy of sedimentary rocks

Kapička, Aleš; Hrouda, František; Petrovský, Eduard; Poláček, Josef

dc.contributor.author	Kapička, Aleš
dc.contributor.author	Hrouda, František
dc.contributor.author	Petrovský, Eduard
dc.contributor.author	Poláček, Josef
dc.date.accessioned	2007-05-09T13:55:43Z
dc.date.available	2007-05-09T13:55:43Z
dc.date.issued	2006
dc.identifier.citation	High Pressure Research. 2006, vol. 26, issue 4, p. 549-553.	en
dc.identifier.issn	0895-7959
dc.identifier.issn	1477-2299
dc.identifier.uri	http://hdl.handle.net/10084/60006
dc.language.iso	en	en
dc.publisher	Taylor & Francis	en
dc.relation.ispartofseries	High Pressure Research	en
dc.relation.uri	http://dx.doi.org/10.1080/08957950601092390	en
dc.subject	magnetic anisotropy	en
dc.subject	plastic deformation	en
dc.subject	sedimentary rocks	en
dc.subject	phyllosilicates	en
dc.title	Effect of plastic deformation in laboratory conditions on magnetic anisotropy of sedimentary rocks	en
dc.type	article	en
dc.identifier.location	Není ve fondu ÚK	en
dc.description.abstract-en	In order to correlate the degree of plastic deformation and low-field magnetic anisotropy, a series of laboratory pressure experiments were carried out on a batch of grey marls. Samples were gradually deformed using triaxial high-pressure device. The confining pressure of 300 MPa was used, yielding maximum relative deformation up to 20% depending upon the uniaxial differential stress. In the range of initial deformation, irregular changes of the anisotropy parameters were typically observed. This effect is related to variable pre-deformation orientation of the anisotropy ellipsoid in the samples. At higher deformation, samples are characterized by increasing degree of magnetic anisotropy and by increasing foliation. Reorientation of paramagnetic phyllosilicate grains due to plastic deformation seems to be the most probable mechanism of the magnetic anisotropy changes.	en
dc.identifier.doi	10.1080/08957950601092390
dc.identifier.wos	000243942800046

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