摘要
崤山地区位于华北陆块南缘,是河南西部金银多金属矿的重要成矿和找矿潜力区.本文通过对该区重要构造地质体和构造变形特征的分析,划分了该区 自新太古代以来的构造演化过程,并总结其过程对区域多金属矿床的控制作用.结果表明:崤山地区构造演化过程划分为8个阶段(自新太古代—),分别为新太古代华北克拉通形成阶段、古元古代基底拼合阶段、中—新元古代板内伸展阶段、古生代板内俯冲阶段、中生代早期陆陆碰撞造山阶段、中生代中期陆内造山阶段、中生代晚期伸展拆离阶段和新生代盆岭演化阶段.其中,中生代晚期伸展拆离阶段是该区金银多金属矿的主要成矿阶段.
Abstract
The Xiaoshan area,located on the southern edge of the North China block,is an important mineral-ization and prospecting potential area for gold silver polymetallic deposits in western Henan.Basing on the observation of the important structural geological bodies and structural deformation characteristics in this ar-ea,this paper divide the tectonic evolution process,and analyz the control effect of the process on the re-gional polymetallic deposits.The results show that the tectonic evolution process of the Xiaoshan area is di-vided into eight stages(since Neoarchean):the formation stage of North China Craton in Neoarchean,the stage of basement assembly in Paleoproterozoic,the stage of intraplate extension in Meso-Neoproterozoic,the stage of intraplate subduction in Paleozoic,the stage of continental collision orogeny in early Mesozoic,the stage of intracontinental orogeny in middle Mesozoic,the stage of extensional detachment in late Mesozo-ic and the stage of basin-range evolution in Cenozoic.Among of them,the late Mesozoic extensional detach-ment stage is the main metallogenic stage of gold-silver polymetallic deposits in this area.
基金项目
河南省有色金属地质矿产局2018年重点项目(豫色地矿办[2018]30号)
河南省有色金属地质矿产局首批科技创新专项资金(揭榜挂帅)项目(豫色地矿文[2021]62号)
维普
万方数据