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Deformation mechanisms, rheology and tectonics microstructures, mechanics and anisotropy: introduction

By
David J. Prior
David J. Prior
Department of Geology, University of Otago, Dunedin, New Zealand
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Ernest H. Rutter
Ernest H. Rutter
Rock Deformation Laboratory, School of Earth, Atmospheric and Environmental Sciences, University of Manchester, Oxford Road, Manchester M13 9PL, UK
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Daniel J. Tatham
Daniel J. Tatham
School of Earth and Ocean Sciences, University of Liverpool, Liverpool L69 3GP, UK
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Published:
January 01, 2011

Abstract

This special publication of the Geological Society of London presents recent advances in the study of deformation mechanisms and rheology and their application to tectonics. We have subdivided the papers into two themed sections.

The inference of deformation processes, conditions and rheology at depth in active tectonic settings is of fundamental importance to a quantitative geodynamic understanding of deformation in the Earth. The papers in the section on Lattice Preferred Orientations and Anisotropy are extremely important as they underpin our ability to make such geodynamic interpretations from global seismic data. These papers reflect the growing emphasis on the determination of elastic properties from microstructures, from which acoustic properties can be computed for comparison with in situ seismic measurements. The component of the microstructure that receives most attention is the lattice preferred orientation (LPO), otherwise known as the crystallographic preferred orientation (CPO) or the texture (the term used in material science and metallurgy). The papers include new LPO measurements (made almost exclusively by the relatively new technique of electron backscatter diffraction or EBSD), exploration of the significance of these data for seismic properties of both the crust and the mantle and modelling of LPO generation. An invited contribution from Mainprice and colleagues introduces a computational toolbox to help researchers calculate anisotropic physical properties from their LPO data.

Rock microstructures evolve during deformation and rock physical properties, including both elastic properties and creep rheology, evolve with the microstructures as a function of strain and time. The section on Microstructures, Mechanisms and Rheology

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Contents

Geological Society, London, Special Publications

Deformation Mechanisms, Rheology and Tectonics: Microstructures, Mechanics and Anisotropy

David J. Prior
David J. Prior
University of Otago, New Zealand
Search for other works by this author on:
Ernest H. Rutter
Ernest H. Rutter
University of Manchester, UK
Search for other works by this author on:
Daniel J. Tatham
Daniel J. Tatham
University of Liverpool, UK
Search for other works by this author on:
Geological Society of London
Volume
360
ISBN electronic:
9781862394483
Publication date:
January 01, 2011

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