摘要
在湖南东北部临湘地区开展的1∶5万区域地质调查,比较完整地建立了该区地层、构造格架以及岩浆演化序列。对新元古代地层进行了重新划分,新厘定了易家桥组、大药姑组二个岩石地层单位。在黄浒洞组凝灰岩中新获锆石SHRIMP年龄为829±13 Ma,为区域地层对比及江南造山带构造演化研究提供了重要的同位素年龄数据。通过工作新发现金、钨、铜多金属矿等矿(化)点26处,其中金矿(化)点14处、钨矿(化)点9处、铜多金属矿点1处、铅矿化点1处、钛铁矿砂矿1处;其中新塘冲金矿、西冲钨矿经估算达小型矿床,根据地质、物探、化探、遥感特征圈出7个找矿远景区,9个找矿靶区,对后续矿产勘查工作具有较重要的指导作用。
Stratigraphic framework, tectonic framework and magmatic evolutionary series have been established in 1：50 000 regional geological survey in Linxiang, Hunan Province. The Neoproterozoic stratum is re-divided, and Yijiaqiao Formation and Dayaogu Formation of which are redefined. A zircon SHRIMP age of 829± 13 Ma is obtained from the volcanic tuff in the Huanghudong Formation, which can provide age information for regional stratigraphic correlation and tectonic evolution history of Jiangnan orogenic belt. Many ore deposits （points） are newly found： 14 gold ore occurrences, 9 tungsten ore occurrences, 1 copper polymetallic ore occurrence, 1 zinc ore occurrence and 1 ilmenite stream ore occurrence. The newly found Xintangchong gold deposit and Xichong tungsten deposit is conformed to be mini-type deposis. Seven prospecting areas and nine prospecting target areas have been identified according to geology, geophysical prospecting, geochemical exploration and remote sensing data.
出处
《华南地质与矿产》
CAS
2011年第4期314-318,共5页
Geology and Mineral Resources of South China
基金
中国地质调查局国土资源大调查项目(编号:1212010610711)
关键词
新元古代
易家桥组
黄浒洞组
大药姑组
新塘冲金矿
西冲钨矿
湖南临湘
Neoproterozoic
Yijiaqiao Formation
Huanghudong formation
Dayaogu Formation
Xin- tangehong gold deposit
Xichong tungsten deposit
Linxiang, Hunan Province
