By D J Prior, E H Rutter, D J Tatham
This number of papers offers contemporary advances within the research of deformation mechanisms and rheology and their functions to tectonics. the various contributions make the most new petrofabric innovations, really electron backscatter diffraction, to aid comprehend the evolution of rock microstructure and mechanical homes. Papers within the first part (lattice hottest orientations and anisotropy ) convey a starting to be emphasis at the decision of elastic homes from petrofabrics, from which acoustic homes might be computed for comparability with in-situ seismic measurements. Such study will underpin geodynamic interpretation of large-scale energetic tectonics. Contributions within the moment part (microstructures, mechanisms and rheology) research the family members among microstructural evolution in the course of deformation and mechanical houses. some of the papers discover how diversified mechanisms compete and engage to regulate the evolution of grain dimension and petrofabrics. individuals utilize mixtures of laboratory experiments, box stories and computational equipment, and a number of other relate microstructural and mechanical evolution to large-scale tectonic procedures saw in nature.
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Additional info for Deformation Mechanisms, Rheology and Tectonics: Microstructures, Mechanics and Anisotropy (Geological Society Special Publication 360)
LLOYD ET AL. 12 Fig. 7. Left: idealized Flinn plot indicating the expected variation in quartz c- and a-axes CPO with different types and magnitude of deformation (Lister & Dornsiepen 1982). Note the tendency for dispersion rather than concentration of crystal axes. Right: Flinn plot representation of examples of natural quartz c- and a-axes CPO and the resulting Vp and AVs seismic properties (data from G. E. Lloyd archive). into unique directions of the crystal axes. These dispersions are responsible for the ‘diluting’ effect of quartz on whole-rock CPO.
1029/2001GL014285. Olsen, T. & Kohlstedt, D. 1984. Analysis of dislocations in some naturally deformed plagioclase feldspars. Physics and Chemistry of Minerals, 11, 153– 160. Olsen, T. & Kohlstedt, D. 1985. Natural deformation and recrystallisation of some intermediate plagioclase feldspars. Tectonophysics, 111, 107 –131. Ozacar, A. A. & Zandt, G. 2004. Crustal seismic anisotropy in central Tibet: implications for deformation style and flow in the crust. 1029/2004GL021096. Passchier, C. W. & Trouw, R.
1974. Velocities of elastic waves in minerals at atmospheric pressure and increasing of precision of elastic constants by means of EVM. Izvestiya Academy of Sciences, USSR, Geophysics, Series 10, 15–24 (in Russian). Babuska, V. & Cara, M. 1991. Seismic Anisotropy in the Earth. Kluwer Academic, Dordrecht. , Burlini, L. & Zappone, A. 2007. Elastic properties, fabric and seismic anisotropy of amphibolites and their contribution to the lower crust reflectivity. Tectonophysics, 445, 227–244. Barruol, G.