张八岭变质岩中线理构造研究

作者等在张八岭地区开展1：5万区域地质调查工作过程中，针对测区内广泛分布的中、晚元古代张八岭岩群等岩层内普遍发育的矿物拉伸线理．砾石压扁拉长定向排列、S1与S2两级面理构成的交线和褶纹线理构造进行了专门测量与研究。然后，依据所测数值分别作了线理平面分布图和产状综合统计图；据图示和综合产状统计、解析．再结合野外观察结果．分别论述每一种线理构造发育特点、产出状态、优选定向组合等特征．从而进一步判别动力作用方式及线理构造最终定位机制。并通过对线理构造系统研究．理顺了它们形成的先后序次关系。

STUDY ON LINEATION OF METAMORPHIC ROCKS IN ZHANGBALING

During regional geological survey in Zhangbaling authurs measured and studied the mineral stretching lineations,flaser enlarging of gravel with orientational arrangement line uf intersection and fold lineations composed by S1 and S2 planar stratification, which widely spread inmiddle-upper Proterozoic rocks in Zhangbaling. Based on data and cartograms authors drewdistribution and occurrence maps of lineations and summed up the features of developing lineations, occurrence,belteroporic assemblages and also suggested the dynamic type lineation andfinal emplaccment system.