地质与资源2004，Vol.13Issue(3)：129-136,8.
扫描电子显微镜对花岗岩中主要矿物裂隙作用的研究
SCANNING OF ESSENTIAL MINERALS IN GRANITE ELECTRON MICROSCOPE STUDY ON THE MICROFRACTURE BEHAVIOR
摘要
Abstract
Granitic samples from Zhejiang Province, Southeast of China, were tested in a uniaxial condition to failure at constant confining pressure. It is found from careful Scanning Electron Microscope (SEM) observations that fractures form the intersection or coalescence of microcavities. Granite consists of three major minerals, Quartz, feldspar (K feldspar ＆ Plagioclase) and biotite. The cracks in various minerals of the specimen develop differently; this obvious difference in crack patterns is believed to result from the nature of their microstructures. Careful observation shows that quartz display brittle and isotropic crack while feldspar and biotite exhibit anisotropic cracks and the separating of their cleavage planes (cleavage cracks) is the one of the major failure forms of biotite and feldspar. From the tectonic point of view, the granite has been strongly deformed and hydrothermally altered; such hydrothermal fluids may be keep the system open for fluid movement to cause alteration metasomatism of granite.关键词
花岗岩/矿物裂隙/扫描电子显微镜(SEM)Key words
granite/microfracture of minerals/scanning electron microscope(SEM)分类
天文与地球科学引用本文复制引用
Moustafa El Omella,唐春安,张哲..扫描电子显微镜对花岗岩中主要矿物裂隙作用的研究[J].地质与资源,2004,13(3):129-136,8.基金项目
This study was supported by the China Scholarship Council (Grant No.160), National Nature Science Foundation of China(Grant No. 400722006) and the Key Task Project of Science and Technology of Liaoning Province (Grant No. 2001230001).1 （Grant No.160）
