Deformation of Earth’s upper mantle: insights from naturally occurring fabric types
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Flow of the Earth’s upper mantle is controlled by the rheology of olivine, therefore comprehending the factors affecting olivine fabric development is critical for understanding global tectonic processes. Microstructural, FTIR and isotope analysis of olivine in Higashi-akaishi and Lihir peridotites provides insight into the relationship between olivine deformation, geochemistry and water. These results have fundamental implications for interpreting seismic anisotropy and are applicable to a wide range of tectonic environments to better constrain mantle deformation.
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The mafic-ultramafic dykes in the Yanbian Terrane (Sichuan Province, SW China): Record of magma differentiation and emplacement in the Emeishan large igneous provinceMunteanu, M.; Wilson, A.; Costin, G.; Yao, Y.; Lum, J.; Jiang, S.; Jourdan, Fred; Chunnett, G.; Cioaca, M. (2017)© The Author 2017. Published by Oxford University Press. All rights reserved. Numerous olivine-rich dykes intruded the late Proterozoic Yanbian terrane, Sichuan, SW China. The dykes are less than 10m thick and show thin ...
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