【摘要】 胶东东部区域上处于秦岭—大别—苏鲁造山带的东端,是中生代的走滑逆冲构造带。进行超微构造研究有利于解决岩石的变形机制问题。应用偏光显微镜和透射电子显微镜方法,进行了胶东东部走滑逆冲构造带显微构造及超微构造研究。研究认为主要走滑逆冲剪切带的石英位错亚构造以线位错为主,并常见位错环、位错弓弯、位错壁、位错列、位错网及亚晶粒等构造型式颗粒等。石英超微位错构造总体反映的是中温或低温塑性变形环境;石岛剪切带、荣成剪切带、牟平剪切带的平均古差异应力值呈现逐渐降低的趋势,跟温度呈反相关的关系。更多还原

【Abstract】 Eastern Jiaodong,regionally located at the eastern end of the Qinling-Dabie-Sulu orogenic belt,is a Mesozoic strike-slip thrust belt.The study of ultramicroscopic structure is favorable to solving the problem of deformation mechanisms of rocks.Microstructure and ultramicrostructure of the strike-slip thrust belt in eastern Jiaodong have been studied using both microscopy and TEM.Study indicates that the dislocation substructure of quartz in the main strike-slip thrust shear zone is dominated by linear dislocation,and in addition,dislocation loops,bow-out,walls,arrays and net and subgrains are also common.A middle-to low-temperature,plastic deformation environment.can be deduced from the ultramicroscopic dislocation structures of quartz.Furthermore,the average differential paleo-stress values of the Shidao,Rongcheng and Mouping shear zones show a trend of gradual decrease,which seems to be inversely correlated with the trend of temperatures.更多还原