地质学报（英文版）2003，Vol.77Issue(3)：320-325,6.
Role of Water in Deformed Omphacite in UHP Eclogite from the Dabie Mountains, Eastern China
Role of Water in Deformed Omphacite in UHP Eclogite from the Dabie Mountains, Eastern China
摘要
Abstract
Omphacite grains from UHP eclogite of the Dabie Mountains in eastern China are elongated and showstrong lattice preferred orientations (LPOs). Observations by the transmission electron microscopy (TEM) identified notonly structures of plastic deformation occurring as free dislocation, dislocation loops and dislocation walls, but alsobubbles of water present in the deformed omphacite. The bubbles attach to the dislocation loops which are often connectedto one another via a common bubble. Using infrared spectroscopy (IR), two types of hydrous components are identified ashydroxyl and free-water in the omphacite. An analysis of deformation mechanism of microstructure in omphacite suggeststhat the mineral deformed plastically under UHP metamorphic conditions by dislocation creep through hydrolitic weakening.关键词
deformation/hydrolitic weakening/omphacite/UHP eclogite/Dabie Mountains/ChinaKey words
deformation/hydrolitic weakening/omphacite/UHP eclogite/Dabie Mountains/China分类
天文与地球科学引用本文复制引用
SU Wen,YOU Zhendong,CONG Bolin,YE Kai..Role of Water in Deformed Omphacite in UHP Eclogite from the Dabie Mountains, Eastern China[J].地质学报（英文版）,2003,77(3):320-325,6.基金项目
This study was funded by the Ministry of Science and Technology of China (No. G19990755-01), the National Natural Science Foundation of China, Postdoctoral Science Foundation of China, the Chinese Academy of Sciences Wong K. C. Post-doctoral Research Awar （No. G19990755-01）
