摘要
采用固体围压高温高压三轴变形实验装置，对望湘花岗岩作了不同温度、压力下的固态流变实验；变形试样作了光学显微镜和ＴＥＭ分析．实验温度３５０～９５０℃，围压６０～４２０ＭＰａ，应变速率１０－６ｓ－１．试样在较低温度压力下表现为脆性破裂；在较高温度压力下出现脆性—韧性过渡状态．望湘花岗岩中长石、石英和黑云母有不同的变形构造和流变性质．
The experimental deformation of Wangxiang granite has been made in a solid pressure medium apparatus with uniaxial compression at t =350～950 ℃, p c=60～420 MPa and strain rate 10 -6 s -1 . Petrographic and transmission electron microscope (TEM) observations are made of the specimens. At low temperature and pressure, the samples are cataclasted by brittle microcracking. At high temperature and pressure, a state of brittle ductile transition occurs. The feldspar, quartz and biotite possess different rheological properties and microstructures.
出处
《中南工业大学学报》
CSCD
北大核心
1999年第3期221-224,共4页
Journal of Central South University of Technology(Natural Science)
基金
教育部博士点基金
关键词
高温高压
变形实验
流变学
望湘花岗岩
花岗岩
high temperature and pressure
experimental deformation
rheology
Wangxiang granite
