摘要
文章介绍了在桂东南 1∶5万长山幅、那卜幅区调过程中 ,首次在射广嶂一带识别出 4条规模较大的伸展滑脱型韧性剪切带和一系列小型顺层韧性剪切带 ,这是该地区地质研究的重要突破。通过野外调研和室内综合分析 ,详细叙述了这些韧性剪切带的构造样式、岩石组合、显微组构以及韧性变形过程中的岩石转变等 ,初步探讨了韧性剪切带的应变、形成环境和变形机制。
During the 1∶50 000 regional geological survey of the Changshan and Nabu sheets of southeastern Guangxi, the author found four large of the extensional detachment ductile shear zones and a series of small of the ductile shear zones in Sheguangzhang area for first time, which important progresses have been achieved in fundamental geological research. On the basis of the data of field survey and indoor synthesize analysis, this paper describes tectonic style, rock assemblage, microscopic fabric and petrologic transformation by ductile deformation of these ductile shear zones in detail. the strain change, deformation environment and deformation mechanism have been discussed.
出处
《广西地质》
2000年第2期11-16,共6页
Guangxi Geology
关键词
韧性剪切带
伸展滑脱
变形特征
形成机制
the ductile shear zones
extensional detachment
deformation characteristics
deformation mechanism
Sheguangzhang southeastern Guangxi
