Slate – A new record for crystal preferred orientation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

15 Scopus Citations
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Author(s)

  • Hans-Rudolf Wenk
  • Waruntorn Kanitpanyacharoen
  • Yang Ren

Detail(s)

Original languageEnglish
Pages (from-to)319-324
Journal / PublicationJournal of Structural Geology
Volume125
Online published16 Dec 2017
Publication statusPublished - Aug 2019
Externally publishedYes

Abstract

This report describes microstructures and preferred orientation of a Devonian slate from the Belgian Ardennes (La Fortelle quarry). The sample, composed largely of muscovite, chlorite, and quartz, displays extraordinary texture strength of muscovite, exceeding 100 multiples of random distribution (m.r.d.) for (001) pole figures and thus setting a new record for preferred orientation in rocks. Quantitative texture analysis was performed with the Rietveld method on synchrotron X-ray diffraction images. Interestingly, quartz also displays strong shape preferred orientation (SPO) as revealed by X-ray microtomography and SEM imaging but largely random crystallographic preferred orientation (CPO). Microstructural evidence suggests that this fine-grained rock formed by recrystallization of shale under stress, with growth of phyllosilicates and dissolution and growth of quartz.

Research Area(s)

  • Chlorite, Muscovite, Preferred orientation, Quartz, Slate

Citation Format(s)

Slate – A new record for crystal preferred orientation. / Wenk, Hans-Rudolf; Kanitpanyacharoen, Waruntorn; Ren, Yang.

In: Journal of Structural Geology, Vol. 125, 08.2019, p. 319-324.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review