Diffusion-driven chromium isotope fractionation in ultramafic cumulate minerals: Elemental and isotopic evidence from the Stillwater Complex
Sign Up to like & getrecommendations! Published in 2019 at "Geochimica et Cosmochimica Acta"
DOI: 10.1016/j.gca.2019.07.052
Abstract: Abstract To investigate chromium diffusion kinetics in ultramafic cumulate minerals, we analyzed the Cr elemental and isotopic compositions of olivine, orthopyroxene, and chromite from the Stillwater layered intrusion. Core-to-rim compositional profiles reveal that Cr elemental… read more here.
Keywords: cumulate minerals; olivine orthopyroxene; ultramafic cumulate; elemental isotopic ... See more keywords
The competing effects of olivine and orthopyroxene CPO on seismic anisotropy
Sign Up to like & getrecommendations! Published in 2021 at "Tectonophysics"
DOI: 10.1016/j.tecto.2021.228954
Abstract: Abstract Orthopyroxene is the second most abundant mineral in the upper mantle and, like olivine, can form crystallographic preferred orientations (CPO) during mantle deformation that may influence mantle seismic anisotropy. Here we use a compilation… read more here.
Keywords: seismic anisotropy; orthopyroxene cpo; olivine orthopyroxene;