青海虎头崖地区多金属矿床成因类型的厘定及找矿方向
Determination of Multifarious Genesis and Prospecting of Polymetallic Metallogenic Deposit in Hutouya, Qinghai
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摘要: 祁漫塔格成矿带是青海省重要的铜多金属成矿区带,虎头崖地区铜铅锌矿床由虎头崖和迎庆沟两个相连矿区组成,近年来找矿取得了很大进展,但该区矿床成因类型尚有争议。通过详细的野外观察,从不同角度收集证据,厘定了矿床的成因类型:一是与印支期岩体、奥陶—志留系滩间山群、上石炭统缔敖组有关的热液型;二是与中元古界狼牙山组有关的喷流沉积-热液叠加改造型。同时,对矿床控矿因素进行了分析,并建立了找矿标志,以指导找矿。Abstract: Qimantag metallogenic belt is very important copper-polymetallic metallogenic beltin Qinghai.Copper-lead-zinc deposits in the Hutouya area composed of Hutouya and Yingqinggou deposit.The deposit prospecting has made great progress in recent years,but the genetic types of deposits remains controversial.Through detailed field observations,we collected evidence from different angles,and then determined two genetic types for the deposits:one belongs to hydrothermal deposit related to Triassic bodies,Tanjianshan group in Ordovician to Silurian,and Di'ao Formation in Late Carboniferous;the other related to Mesoproterozoic Langyashan Formation belongs to SEDEX-hydrothermal superimposition-transformation deposit.At the same time,ore-controlling factors were analyzed and prospecting criteria was established to guide the exploration.
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Keywords:
- SEDEX /
- hydrothermal /
- ore-forming type /
- copper-lead-zinc deposits /
- Hutouya /
- Qinghai
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