[HTML][HTML] Petrogenesis of phlogopite-pyroxenite from Southern India: Implications for the link between Proterozoic subduction-to rift-related arc magmatism
In this study, we investigate phlogopite-rich pyroxenite from a major terrain boundary, ie, the
interface of Nallamalai Fold Belt and Nellore schist belt, in southern India. Petrographic
studies reveal that the clinopyroxenite is composed of clinopyroxene and phlogopite with
subordinate pyrrhotite in which cumulus texture is conspicuously noticed. Resorbed grain
boundaries noticed in the clinopyroxene indicates crystal melt interaction. The relatively high
Mg#(61–67) supports the mantle derived nature of the pyroxenite. The negative Ta, Nb and …
interface of Nallamalai Fold Belt and Nellore schist belt, in southern India. Petrographic
studies reveal that the clinopyroxenite is composed of clinopyroxene and phlogopite with
subordinate pyrrhotite in which cumulus texture is conspicuously noticed. Resorbed grain
boundaries noticed in the clinopyroxene indicates crystal melt interaction. The relatively high
Mg#(61–67) supports the mantle derived nature of the pyroxenite. The negative Ta, Nb and …
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