摘要
驱龙矿床位于西藏冈底斯成矿带东段,成矿条件优越。该矿床为一典型斑岩型矿床,其铜(钼)矿化与喜山期黑云母花岗闪长斑岩、石英二长花岗斑岩时空及成因关系密切,具典型的细脉浸染型矿化特征,围岩蚀变发育且具面型分带现象。区域构造演化、成岩成矿时代表明,冈底斯成矿带内的斑岩型矿化发生于印度与亚洲板块的后碰撞阶段挤压向伸展的转换期。综合地质、化探与遥感等找矿信息,预测驱龙矿床找矿潜力巨大,驱龙东段是进一步勘查工作的首选靶区,矿体剥蚀程度低,具较大埋深(>1000m)。强调斑岩型矿化的同时,应注意岩体接触带附近矽卡岩型以及不同围岩裂隙中的脉型多金属矿的找矿工作。
Qulong copper （molybdenum） deposit ore-forming condition. located in eastern Gangdise metallogenic belt with favorable Qulong deposit belongs to typical porphyry ones, and its copper-molybdenum mineralization has close spatial-temporal and genetic relationships with biotite granodiorite porphyry and adameUite granite porphyry in Xishan Formation, which has veinlet-disseminated type features, and together with the intensive wall-rock alteration and facial type zonation. According to regional tectonic evolution and their metallogenic age, eralization in the Gandise belt were formed in the between Indian and Asian plates. Combined with porphyry minconversion period from post-collisional compression to extension geology, geochemistry exploration as well as remote sensing, it is demonstrates that the eastern Qulong mine is the most favorable ore-finding target, its denudation degree of mineralization is low and buried depth more than 1 000 m. Besides the porphyry mineralization, skam type polymetaUic ore around contact zones and vein type polymetallic ore in wall rock cracks are worthy of paying attention to.
出处
《世界地质》
CAS
CSCD
2009年第4期460-466,共7页
World Geology
基金
国家科技支撑项目(2006BAB01A04)
国家重点调查项目(1212010530101)联合资助
关键词
斑岩型矿床
矿化特征
远景预测
驱龙
西藏
porphyry deposit
mineralization characteristic
perspective forecasting
Qulong
Tibet
