Recrystallization of single crystals of quartz

doi:10.1016/0040-1951(68)90056-5

Tectonophysics

Volume 6, Issue 5, November 1968, Pages 353-401

https://doi.org/10.1016/0040-1951(68)90056-5 Get rights and content

Abstract

Three types of experiment have been carried out to investigate the influence of stress, strain and initial crystallographic orientation on the recrystallization of single crystals of quartz. These experiments are: (1) stress annealing experiments, in which the specimen is loaded to a high differential stress at a relatively low temperature and the temperature then rapidly increased to a higher value while the differential stress is present; (2) annealing experiments in which the specimen is deformed at a low temperature and then heated under hydrostatic stress at a higher temperature; (3) syntectonic recrystallization experiments in which the specimen is deformed to high strains at a constant strain rate and high temperature.

All experiments were conducted at 10 or 15 kbar confining pressure and at temperatures in the range 300°–1,400°C. Recrystallization does not take place in any of these experiments unless trace amounts of (OH) are present in the quartz structure.

In both stress annealing and annealing experiments, nucleation of new grains takes place along narrow kink bands and the new grains have approximately the same orientation of c as that within the kink zones. The host orientation appears to exert a considerable control over the orientations of grains that ultimately grow to form an aggregate of polygonal grains. Grains in which c lies at 20°–40° to the adjacent host c-axis grow fastest; grains in which c lies at 0°–10° to the adjacent host c-axis rarely appear in the final preferred orientation.

In syntectonic recrystallization experiments, nucleation and growth of new grains from submicroscopic regions does not appear to take place. Rather, subgrains that form in deformation bands at low strains increase their relative misorientations as the strain increases until an array of diversely oriented grains with sharp grain boundaries develops. The resulting preferred orientations may be interpreted in terms of a host control similar to that observed in annealing experiments or as a tendency for new grains to form with c-axes at 50° to the axis of shortening.

At 15 kbar confining pressure and temperatures above 800°C, coesite nucleates and grows in highly strained single crystals of quartz.

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^☆: Publication no. 577, Institute of Geophysics and Planetary Physics, University of California, Los Angeles, Calif. (U.S.A.).

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Recrystallization of single crystals of quartz☆

Abstract

Progr. Metal Phys.

J. Phys. Chem. Solids

Acta Met.

Grain boundary migration

Kinetics of phase change. 1. General theory

J. Chem. Physics

Kinetics of phase change. 2. Transformation-time relations for random distribution of nuclei

J. Chem. Physics

Kinetics of phase change. 3. Granulation, phase change and microstructure

J. Chem. Physics

Electron microscope observations on the annealing processes occurring in cold-worked silver

Phil. Mag.

Electron microscope observations on recovery and recrystallization processes in cold-worked metals

The recrystallization process in some polycrystalline metals

Recrystallization texture of aluminium after compression

Trans. A.I.M.E.

J. Appl. Phys.

Annealing of cold worked metals

Advan. Phys.

The origin of recrystallization textures

Strain induced grain boundary migration in high purity aluminium.

J. Appl. Phys.

Electron microscopic observations on the recrystallization of nickel

J. Inst. Metals

Ultrarotuntersuchungen über den Einbau von H in natürlichen Quarz

Z. Electrochem.

Über den Zusammenhang zwischen Deformationsvorgang und Rekristallisations-textur bei Aluminium

Z. Physik.

Recrystallization of single crystals after plastic bending

J. Inst. Metals

A new theory of recrystallization nuclei

Recrystallization Mechanisms

Experimental deformation and recrystallization of quartz

J. Geol.

Experimental evidence of basal slip in quartz

J. Geol.

“Experimental deformation and recrystallization of quartz” and “Experimental evidence of basal slip in quartz”. A reply

J. Geol.

Experimental deformation of quartz single crystals at 27 to 30 kbar confining pressure and 24°C

Am. J. Sci.

Preferred orientation in wrought and annealed metals

Metals Rev.

Microscopic structure and fabric of Yule Marble experimentally deformed at different strain rates

J. Geol.

Grain boundary migration