云南白秧坪银多金属矿床微量元素地球化学特征

基金项目:

国家重点基础研究发展规划项目(G1999043208)

详细信息

Geochemistry of the trace elements from the Baiyangping silver polymetallic deposit in Lanping, Yunnan

摘要: 云南白秧坪银多金属矿床是滇西兰坪盆地内新发现的矿床,属东特提斯喜马拉雅成矿域的一部分。矿床主要产于下白垩统景星组石英砂岩、粉砂岩中。本文从微量元素地球化学研究入手,与滇西喜马拉雅期富碱岩体相比较,它们具有相同的物质来源区,这种源区被认为是壳幔物质混合的一种"EMⅡ型"富集地幔源。
- 微量元素 /
- 地球化学 /
- 银多金属矿床 /
- 白秧坪 /
- 云南
Abstract: The Baiyangping silver polymetallic deposit as a newly discovered deposit in the Lanping Basin, western Yunnan is assigned to part of the eastern Tethys-Himalayas metallogenic domain, and hosted in the quartz sandstone and siltstone of the Lower Cretaceous Jingxing Formation. The comparison of the geochemical signatures of the trace elements from the above-mentioned ore deposit and other Himalayan alkaline rock masses in western Yunnan shows a similar provenance of the ore-forming material, i.e. the mixed crust-mantled "EM-Ⅱ" type enriched mantle origin.
- trace element /
- geochemistry /
- silver polymetallic deposit /
- Baiyangping /
- Yunnan