Texture transition in paleosubduction systems. Implications for Seismic anisotropy
Most of the rocks properties are directionally dependent, i.e. anisotropic. It is a main concern both in Geology and Materials Science the microstructure/property relations. In natural polycrystals grain orientation (or texture) are the main responsible of anisotropy. In depth, texture is commonly attained in rocks by the accumulation of plastic strain, and can be related to active or ancient geodynamic flows. Since seismic anisotropy is our best diagnostic tool to determine tectonic flow in deep Earth the interpretation of seismological data in terms of the deformation state and mechanisms must be calibrated with representative natural samples where quantitative texture analyses can be used to explore the elastic anisotropy of the aggregate and set the contribution of each mineral phase to the bulk seismic anisotropy. We propose to use texture analysis to characterise significant fabric transition at high pressure / low-high-T gradients as sampled in the Paleozoic and Cenozoic orogens, mainly in Europe and North America. Those data will be used to model seismic anisotropy and calibrate the geophysical response of rocks in terms of strain gradients.
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The recommended format for citing this dataset in a research publication is in the following format:
GOMEZ BARREIRO Juan; Chateigner; LUTTEROTTI Luca; Morales, J.; NASSIF Vivian; OULADDIAF Bachir; PUENTE ORENCH Ines and Michele Zucali. (2021). Texture transition in paleosubduction systems. Implications for Seismic anisotropy. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.5-21-1147
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