安徽霍山戴家院西周文化遗址含液化脉变形物质微观细结构  

Micro-fine structure of deformation materials of including liquefaction vein in cultural layer of Western Zhou Dynasty on Daijiayuan site,Huoshan,Anhui province

作　　者：姚大全[1] 沈小七[1] 张小雷[2] 杨源源[1] 赵朋[1] 郑海刚[1] 

机构地区：[1]安徽省地震局,合肥230031 [2]安徽省文物考古研究所,合肥230001

出　　处：《地球物理学进展》2017年第2期538-545,共8页Progress in Geophysics

基　　金：地震行业科研专项"华北;华南边界地区史前地震识别研究"(201308012);中国地震局科研专项"郯庐断裂带三维地震构造分段模型与地震预测研究"(TYZ20160101);安徽省公益性地质项目"郯庐断裂带重点地段第四纪新活动及介质速度结构探查评价"(2015g25)共同资助

摘　　要：以梅山—龙河口断裂近侧安徽霍山戴家院遗址再发掘所揭示出的自然变形痕迹为主要研究对象,结合前期工作对比分析,识别编录其变形形态,分析其活动习性,定向采集含液化脉变形物质,在保持原态基础上进行微观分析.发现一系列丰富的微观变形组构和组合,如波浪状、流动构造和定向排列组构,有机颗粒悬浮等;脉体形态多种多样,见原地碎裂,弥漫性裂隙,在脉体及旁侧基质见先成纹层被扰动,被扭曲甚至被冲断,产生微破裂、穿切和揉皱等,多处显现流动-挤压-冲断递进变形过程,呈现丰富的微观变形细节.地震液化脉微观变形特征的提炼对液化脉多尺度的识别研究是有益的.As a main research object that natural deformation relics were revealed by exploring on Daijiayuan site nearside Meishan-Longhekou fault, combining the comparative analysis of previous works,identifying the catalog deformation shape,analogizing of the active behavior,redirect liquefied vein samples were collected,keeping it the original state to consolidate,making structure analyze by microscopy. Discover a rich and complex series of microscopic deformation textures and combinations, As a wave-shaped, water flow structure and orientation of fabrics, organic particle suspensions; Veins are multiple forms. In-situ fragmentation, diffuse rupture can be seen. In matrix of the veins and on their side, antecedence laminations were disturbed, distorted, even cut, steadily dislocated, formed a micro-fracture, cutting and crinkled fabric etc.. Flow-pressing-cutting processes of progressive deformation were appeared in many place,details of the rich micro-deformation was showed.Refining the microscopic features of seismic liquefaction vein to research on multi-scale recognition for seismic liquefaction vein is obviously useful.

关 键 词：戴家院 史前地震 地震液化 西周 微观细结构 

分 类 号：P313[天文地球—固体地球物理学]