CAJ | 학술논문

南天山是天山山脉的一支,是中亚型造山带的典型代表,它经历了复杂的增生-碰撞过程.关于古南天山洋最终闭合-碰撞造山(碰撞事件)发生的时间一直存在不同的认识,争论由来已久.综合分析南天山造山带的构造、地层、古生物、岩石、地球化学和同位素年代学等方面的资料,特别是对放射虫、蛇绿岩、蓝片岩、火山弧及前陆盆地沉积等地质事实的研究,我们认为,南天山碰撞造山作用起始于二叠纪末-三叠纪初.
남천산시천산산맥적일지,시중아형조산대적전형대표,타경력료복잡적증생-팽당과정.관우고남천산양최종폐합-팽당조산(팽당사건)발생적시간일직존재불동적인식,쟁론유래이구.종합분석남천산조산대적구조、지층、고생물、암석、지구화학화동위소년대학등방면적자료,특별시대방사충、사록암、람편암、화산호급전륙분지침적등지질사실적연구,아문인위,남천산팽당조산작용기시우이첩기말-삼첩기초.
South Tianshan orogen between Tarim and middle Tianshan has undergone complicate tectonic evolution,especially,the fore-arc accretion during the subduction of the oceanic crust of the ancient south Tianshan ocean under the middle Tianshan volcanic arc.There are various understandings about the beginning time of south Tianshan collision orogeny.Analyzing from the geological data,esp.,radiolarian,ophiolite,blueschist,volcanic arc and foreland basin deposits,The beginning time of collision in south Tianshan is P_3-T_1.