摘要
本文论述了在雅鲁藏布江蛇绿岩中发现的大型幔型韧性剪切带的几何学和运动学特征,通过研究超镁铁质糜棱岩中变形橄榄石的显微构造,分析了上地幔的流变状态,探讨了幔型韧性剪切带生成的构造环境和阿尔卑斯型铬铁矿的地幔剪切动力成因机制。
The geometrie and kinetic features of the large mantle ductile shear zone along Yarlung-zangbo River are discussed. Based on the study of microstructures of deformed olivines in ultramafic mylonites, the rheomorphic state of upper mantle is analysed. Finally, the formation environment of the mantle ductile shear zone and mantle shear dynamic minerogenesis of Alpine-type chromites are discussed .
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1994年第4期455-460,T001,共7页
Earth Science-Journal of China University of Geosciences
关键词
蛇绿岩
剪切带
雅鲁藏布江
韧性
mantle ductile shear zone, structural feature, formation environment, Yarlung-zangbo river.
