Ductile Deformation history of Finero phlogopite peridotite

Abstract

Finero phlogopite peridotite was metazomatized in the mantle wedge in Late Palezoic time.We studied the detail of deformation history of the Finero phlogopite peridotite during the exhumation from the upper mantle through microstructural observation mainly with optical and electron microscopy, SEM/EBSD and TEM. The phlogopite peridotite body was subjected to shear stress, and where samples hold numerous fulid inclusions. In addition, some olivine slip system data shows hydrous condition. In order to reveal the origin of fluid inclusion,we performed noble gases measurement. The results shows the mixture of Air and crust and MORB component.