Magma Replenishment as Revealed by Textural and Geochemical Features of Plagioclase Phenocrysts in Subduction‐Related Lavas

Various petrographic features and geochemical characteristics indicative of disequilibrium are preserved in plagioclase phenocrysts from basaltic to andesitic lavas in East Junggar, northwest China. These characteristics indicate that they crystallized in a magma chamber, which was replenished by less differentiated and high‐temperature magmas. The petrographic and geochemical features of the plagioclase phenocrysts are interpreted to record...