摘要
辽河(岩)群在辽宁省为十分重要的地层,不仅蕴藏着丰富的矿产,还存在诸多有争议的问题,变形期次就是其中重要问题之一.辽河(岩)群中最主要的构造形迹就是东西向展布的区域上透入性面理,它是纵向置换作用形成的,在微观上残留了较多置换过程的痕迹.从辽河(岩)群的的原岩建造来看,它至少经历了类似"大西洋阶段"和"太平洋阶段",不会是夭亡的裂谷.通过全方位构造解析认为,洋盆闭合挤压造山过程是一个漫长的递进变形过程,在这一漫长的递进变形过程中形成的所有构造形迹皆属同一期构造,即辽河(岩)群可归纳为一期构造.
The Liaohe（rock）Group,as the very important strata in Liaoning Province,is rich in minerals. However,controversies about the strata remain,like deformation phases. The regional E-W-trending penetrative foliation formed by longitudinal displacement with many microscopic residual traces is the main structural feature. From the view of protolith formation,it has experienced at least the process similar to＂Atlantic stage＂and＂Pacific stage＂,rather than a declined rift valley. Through comprehensive structural analysis,it is believed that all the structural features formed in the long progressive deformation of ocean basin closure-compressional orogeny belong to the same structure. Thus the Liaohe（rock）group should be the result of one-phase structure.
作者
仲米山
王海鹏
鲁红峰
郭洪方
ZHONG Mi-shan;WANG Hai-peng;LU Hong-feng;GUO Hong-fang(Liaoning Institute of Geological Exploratio;Dalian 116100,Liaoning province China)
出处
《地质与资源》
CAS
2018年第3期218-223,共6页
Geology and Resources
基金
辽宁地矿集团项目"辽东地区古元古代成矿地质背景与区域成矿规律研究"
中国地质调查局项目"辽东-吉南成矿带永吉-凤城地区地质矿产调查"(编号DD20160049)
关键词
纵向置换
威尔逊旋回
洋盆闭合
全方位构造解析
递进变形
变形期次
辽河群
longitudinal structural displacement
Wilson cycle
closure of ocean basin
comprehensive structuralanalysis
progressive deformation
deformation phase
Liaohc Group
