摘要
通过流体包裹体压力估算胶东西北部金矿形成深度上限为2～3 km,成矿深度下限为5～8 km。根据中生代花岗岩年代、形成深度及出露情况,认为金矿床形成后区域抬升剥蚀量为2.0～2.5 km,最小不低于1.5 km,最大不超过3.0 km。因此,胶东西北部金矿床形成后剥蚀程度较小,属于保存条件完好的热液成矿系统。胶东西北部主要控矿断裂深部3 km范围内具有巨大的找矿前景。
It is estimated from pressure data of fluid inclusion that gold deposits in the northwestern of Jiaodong peninsular were formed between the upper limits of 2 to 3 km and the lower limits of 5 to 8 km.Taking into consideration of the age,formation depth and occurrence of Mesozoic granitoid in this area,the gold deposit hosting block were roughly lifted and eroded 2.0 to 2.5 km,with estimated minimum of 1.5 km and maximum of 3.0 km.Hence,there is slight erosion in the gold ore forming in the northwest of Jiaodong,which belongs to the well preserved hydrothermal system.It is inferred that there is a great potential of gold resource above 3 km in depth of the main ore deposit hosting faults in the northwest of Jiaodong peninsular.
出处
《金属矿山》
CAS
北大核心
2011年第8期112-115,共4页
Metal Mine
基金
国家自然科学基金项目(编号:40872068
40572063
40672064)
高等学校学科创新引智计划项目(编号:B07011)
教育部新世纪优秀人才支持计划项目(编号:NCET-09-0710)
地质过程与矿产资源国家重点实验室开放课题(编号:GPMR0732
GPMR200833)
关键词
胶东
金矿床
流体包裹体
剥蚀深度
深部资源潜力
Jiaodong
Gold deposit
Fluid inclusion
Erosion depth
Resource estimation in depth
