郯庐断裂带明光朱刘探槽晚第四纪断错物质微观细结构

Microscopic fine structure of faulted material late Quaternary in Zhuliu trough,Mingguang area,Tancheng-Lujiang fault zone

以郯庐断裂带明光朱刘探槽揭示的断裂晚第四纪以来活动变形物质为主要研究对象,在已有工作和认识基础上,定向采集断错变形物质,在保持原态前提下进行微观构造分析.微观细结构研究表明,断裂新活动微观变形现象丰富,形态多样.多期活动使得微观变形形态趋于复杂;压剪性和张剪性过程会遗留下不同的微观变形组构和组合;高速和缓慢变形可以从微观角度分析来加以区分;肉眼无法识别的"隐形"断层在微观视域中往往能加以识别.上述尝试一定程度丰富了断裂活动习性研究的思路和方法.

Think the deformation material of fault activity late Quaternary by Zhuliu trough revealed main research object,Mingguang area,Tancheng-Lujiang fault zone,on the basis of existing work and understanding,directional acquisition of faulted deformation material,conductting micro structural analysis under the condition of keeping the original state. Micro fine structure study showed that,the new fracture activity is rich in micro deformation,morphological diversity. The micro deformation tends to be complex under multi period activities. Compression shear and tension shear processes will be left behind different microstructure deformation composition. High speed and slow deformation can be distinguished from the micro point of view. The invisible fault could not be identified by the naked eye can be distinguished. The above attempts have enriched the ideas and methods of the study of fault activity a certain extent.