摘要
断层泥是研究断裂带的重要信息载体。根据采集的断层泥样品,采用扫描电镜与XRD试验分析秦峪断裂带南支断层F_(1)、主断层F_(2)断层泥样品的微形貌特征及矿物成分特征。结果表明,F_(2)断层泥颗粒多表现为板状,F_(1)断层泥颗粒多呈现出针状、叶片状等黏土矿物特征,且伊利石、蒙脱石、高岭石含量高于F_(2)断层泥。F_(1)、F_(2)断层泥石英碎砾表面并存多种溶蚀微结构,但断口呈贝壳状,表明研究区秦峪断裂带经历了多次构造运动。
Fault gouge is an important information carrier for studying fault zones.According to the collected fault gouge samples,scanning electron microscopy and XRD tests are used to analyze the micro-morphological characteristics and mineral composition characteristics of the fault gouge samples from the southern branch of the Qinyu fault zone and the main fault.The results show that particles of F_(2) fault gouge are mostly plate-shaped,and particles of F_(1) fault gouge mostly present needle-like,leaf-like clay mineral characteristics,and the content of illite,montmorillonite and kaolinite is higher than that of F_(2) fault gouge.There are multiple dissolution microstructures coexisting on the surface of F_(1) and F_(2) fault gouge quartz gravel,but the fracture is shell-shaped,indicating that the Qinyu fault zone has experienced many tectonic movements.
作者
刘金水
刘伟
陈凌伟
张庆华
刘高
LIU Jin-shui;LIU Wei;CHEN Ling-wei;ZHANG Qing-hua;LIU Gao(Guangzhou Urban Planning&Design Survey Research Institute,Guangzhou 510030,Guangdong;Lanzhou University,Lanzhou 730000,Gansu,China)
出处
《地下水》
2022年第1期162-163,共2页
Ground water
基金
广东省重点领域研发计划(2020B0101130009)
广东省城市感知与监测预警企业重点实验室(2020B121202019)。
关键词
断层泥
微形貌
矿物
秦峪断裂带
Faultgouge
micro-morphology
minerals
Qinyu fault zone
