摘要
太行山涞易地区位于华北地幔亚热柱阜平幔枝构造的北端,是河北省金银多金属矿重要成矿区之一。在综合研究区域地质背景基础上,通过对涞源镰巴岭—沙潭铺一带开展1∶5万水系沉积物测量工作,认为本区内主要赋矿地层为太古界变质岩和中元古界碳酸盐岩;控矿构造为乌龙沟—上黄旗深大断裂两侧,核部岩浆-变质核杂岩内破碎带、外围拆离滑脱带上次级断裂;由核部向外主要成矿元素为Au、Cu(Mo)-Au、Ag-Ag(Au)、Pb、Zn,矿化分带明显。乌龙沟—上黄旗断裂带内,Au-Ag、Pb-Zn、W-Mo 3种异常组合空间分异明显;金银赋矿构造主要是近南北向的基底和盖层之间的构造滑脱带,滑脱带内蚀变强烈。通过详细的研究建立了地质-地球物理-地球化学综合找矿模式。
The Laiyi area of the Taihang Mountains is located in the northern end of the Fuping mantle branch structure of the North China mantle sub-thermal column.It is one of the important metallogenic areas of gold and silver polymetallic deposits in Hebei Province.Based on the comprehensive study of regional geological background,through the 1∶50000 stream sediment survey in the Lianbaling—Shatanpu area of Laiyuan,it is considered that the main ore-bearing strata in this area are Archean metamorphic rocks and Mesoproterozoic carbonate rocks.The ore-controlling structure is the secondary fault on both sides of the Wulonggou-Shanghuangqi deep fault,the inner fracture zone of the core magma-metamorphic core complex and the outer detachment slip zone.The main ore-forming elements from the core outward are Au,Cu(Mo)-Au,Ag-Ag(Au),Pb,Zn,and the mineralization zoning is obvious.In the Wulonggou-Shanghuangqi fault zone,the spatial differentiation of Au-Ag,Pb-Zn and W-Mo anomaly combinations is obvious.The gold-silver ore-bearing structure is mainly a structural detachment zone between the nearly north-south basement and the caprock,and the alteration in the detachment zone is strong.A comprehensive geological-geophysicalgeochemical prospecting model is established。
作者
张才龙
郭海全
邢欢
陈超
李锋
郭静粉
王晨光
ZHANG Cai-long;GUO Hai-quan;XING Huan;CHEN Chao;LI Feng;GUO Jing-fen;WANG Chen-guang(Geological Exploration Technology Center of Hebei Bureau of Geology and Mineral Resources Exploration,Shijiazhuang 050081,China;Hebei GEO University,Shijiazhuang 050031,China)
出处
《河北地质大学学报》
2023年第5期12-25,共14页
Journal of Hebei Geo University
基金
河北省地质矿产勘查开发局科研项目(13000022P00329410103R)
河北省地质矿产勘查开发局科研项目(13000022P00329410108U)。
关键词
地球化学
幔枝构造
找矿模式
涞易地区
geochemistry
mantle branch structure
prospecting model
Laiyi area
作者简介
张才龙(1987—),男,河北行唐人,工程师,从事固体矿产勘查工作。E-mail:448102565@qq.com;通讯作者:郭海全(1968—),男,河北永年人,正高级工程师、研究生,从事地质矿产勘查、地球化学调查及研究工作。E-mail:121217325@qq.com。
