Texture-induced anisotropy as a seismic tectonic flow fingerprint
We propose to quantify the texture of rocks collected from the lower crust. Those samples represent critical rheological sections of different orogens, which encompass deformation fabrics developed under high-temperature and high-pressure, and different stress levels. Quantitative texture analysis could help to understand not only deformation mechanisms, but also elastic anisotropy of the rock. The correlation between shape fabric, texture and elastic anisotropy is fundamental in understand tectonic flow in active geodynamics based on geophysical data. Neutron diffraction in combination with Rietveld method has emerged as the best technique to analyze large samples composed of low symmetry phases with enough statistics and resolution on such large grained samples. We propose to study 15-20 samples of lower crust rocks, formed during deep-sited processes at Pan-African (630-610Ma), Variscan (380-290Ma) and Alpine (100-30Ma) times. Selected rocks have been cut in approximately 1 cm3 samples allowing a large volume of crystallites to be analyzed even though a large grain-size (100-1000microns) is expected. D1B and D20 beam-lines are proposed for the experiment.
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The recommended format for citing this dataset in a research publication is in the following format:
GOMEZ BARREIRO Juan; BARRIOS SANCHEZ Santos; BENITEZ PEREZ Jose Manuel; Chateigner; EL MENDILI Yassine; LUTTEROTTI Luca; Morales, J.; OULADDIAF Bachir; TETTAMANTI Magdalena and Michele Zucali. (2018). Texture-induced anisotropy as a seismic tectonic flow fingerprint. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-02-232
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