Kinks in mica

Role of dislocations and (001) cleavage

I. A. Bell*, C. J L Wilson, A. C. McLaren, M. A. Etheridge

*Corresponding author for this work

Research output: Contribution to journalArticle

44 Citations (Scopus)

Abstract

Kinking in natural and experimentally deformed biotite and muscovite has been investigated by transmission electron microscopy (TEM). It is found that complex microstructures exist in the vicinity of kink band boundaries (KBBs). Gentle bending of (001) planes plays an important role in the kinking process; where (001) planes are bent several degrees, edge dislocations are observed in complex walls between active slip planes together with broad bands of dislocations parallel to (001). Microfracturing and dilation occur parallel to (001) planes and the KBB. A model is presented to explain the origin of observed KBBs which may be applicable to other crystalline materials with only one active slip plane.

Original languageEnglish
Pages (from-to)49-65
Number of pages17
JournalTectonophysics
Volume127
Issue number1-2
DOIs
Publication statusPublished - 1 Jul 1986
Externally publishedYes

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    Bell, I. A., Wilson, C. J. L., McLaren, A. C., & Etheridge, M. A. (1986). Kinks in mica: Role of dislocations and (001) cleavage. Tectonophysics, 127(1-2), 49-65. https://doi.org/10.1016/0040-1951(86)90078-8