Journal ArticleDOI
Quartz grainsize evolution during dynamic recrystallization across a natural shear zone boundary
Haoran Xia,John P. Platt +1 more
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In this article, the authors investigated the bulge size and grainsizes of quartz at approximately the initiation and the completion stages of bulging recrystallization across the upper boundary of a 500m thick mylonite zone above the Vincent fault in the San Gabriel Mountains, southern California.About:
This article is published in Journal of Structural Geology.The article was published on 2018-04-01. It has received 13 citations till now. The article focuses on the topics: Dynamic recrystallization & Recrystallization (geology).read more
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Journal ArticleDOI
Role of grain-size in phyllonitisation: Insights from mineralogy, microstructures, strain analyses and numerical modeling
TL;DR: In this paper, a 2D finite element modeling of linear elastic material was performed using COMSOL software to investigate the control of grain-size variation on the generation brittle shear planes.
Journal ArticleDOI
Temperature and strain controls on ice deformation mechanisms: insights from the microstructures of samples deformed to progressively higher strains at ???10, ???20 and ???30 ??C
Sheng Fan,Travis F. Hager,David J. Prior,A. J. Cross,David L. Goldsby,Chao Qi,Marianne Negrini,John Wheeler +7 more
TL;DR: In this article, the microstructural evolution of ice with increasing axial strain has been studied and it was shown that grain boundary misorientation is not controlled by crystallography.
Journal ArticleDOI
Estimation of deformation temperatures, flow stresses and strain rates from an intra-continental shear zone: The Main Boundary Thrust, NW Himalaya (Uttarakhand, India)
Narayan Bose,Soumyajit Mukherjee +1 more
TL;DR: In this paper, thermal and tectonic data from the mylonitized rocks of the Main Boundary Thrust (MBT) were generated from the Siwalik range and the Lesser Himalaya, respectively.
Journal ArticleDOI
Rates of Dynamic Recrystallization in Geologic Materials
TL;DR: In this paper, the authors examined DRX rates using the Johnson-Mehl-Avrami-Kolmogorov theory for phase transformation kinetics using a compilation of published and newly derived DRX data from experimental studies on a wide range of geologic and engineering materials.
Journal ArticleDOI
Using quartz fabric intensity parameters to delineate strain patterns across the Himalayan Main Central thrust
TL;DR: In this paper, a new approach for delineating the spatial extents of shear zones using quartz petrofabric, temperature, and kinematic data collected from two transects across the Main Central thrust (MCT) in western Bhutan was explored.
References
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Journal ArticleDOI
The eastern Tonale fault zone: a ‘natural laboratory’ for crystal plastic deformation of quartz over a temperature range from 250 to 700 °C
TL;DR: In this paper, a temperature gradient from ∼250 to ∼700°C was determined across the Tonale fault zone using critical syn-kinematic mineral assemblages from the metasedimentary host rocks surrounding deformed quartz veins.
Journal ArticleDOI
Dislocation creep regimes in quartz aggregates
Greg Hirth,Jan Tullis +1 more
TL;DR: In this paper, the authors used optical and TEM microscopy to identify three regimes of dislocation creep in experimentally deformed quartz aggregates, depending on the relative rates of grain boundary migration, dislocation climb and dislocation production.
Book ChapterDOI
Theory and Applicability of a Recrystallized Grain Size Paleopiezometer
TL;DR: In this paper, an approximate theoretical relation is derived which relates stress during steady state creep to both subgrain size and dynamically recrystallized grain size, based on equating the dislocation strain energy in the grain boundary to that in the enclosed volume.
Journal ArticleDOI
Dynamic recrystallization of feldspar: A mechanism for ductile shear zone formation
Jan Tullis,Richard A. Yund +1 more
TL;DR: In this paper, it was shown that recrystallization-accommodated dislocation creep may be responsible for the grain-size reduction and strain softening that lead to the formation of many mylonites and ductile shear zones.
Journal ArticleDOI
The Recrystallization Process in Some Polycrystalline Metals
TL;DR: In this paper, a theory based on the known form of the recrystallization kinetics without necessarily introducing any anisotropy of grain boundary mobility is proposed, which is identical to the activation energy for grain boundary migration.
Related Papers (5)
An assessment of dynamically recrystallized grainsize as a palaeopiezometer in quartz-bearing mylonite zones
M. A. Etheridge,J.C. Wilkie +1 more
Grainsize reduction, grain boundary sliding and the flow strength of mylonites
M. A. Etheridge,J.C. Wilkie +1 more