| 云南大平掌矿区火山岩及铜多金属矿床成矿机制研究 | |
钟宏
| |
| 1998 | |
| Degree Grantor | 中国科学院地球化学研究所 |
| Place of Conferral | 中国科学院地球化学研究所 |
| Degree Name | 博士 |
| Degree Discipline | 矿床地球化学 |
| Keyword | 火山岩型块状硫化物矿床 细碧岩－石英角斑岩建造 成矿物质来源 成矿流体来源 成矿模式 云南大平掌 |
| Abstract | 首次提出大平掌细碧岩－石英角班岩为形成于岛弧环境的寒武纪火山岩建造，岩浆来源于地幔源区。这套岩石很可能为基性及酸性岩浆受对流循环的海底热卤水一定的混染作用后结晶形成。大平掌矿床为火山岩型块状硫化物矿床，可能形成于晚石炭世。成矿物质主要来源于火山岩，而成矿流体主要来源于海水与岩浆水的混合流体。在此基础上，首次提出与块状硫化物矿床有关的火山岩成岩过程和成矿过程可以有较大的时间间隔。 |
| Other Abstract | It is suggesting for the first time that the spilite-quartz keratophyre of Dapingzhang ore district formed on an island-arc environment during the Cambrian period, with its magma was derived from the mantle. The volcanic rocks are thought to most probably crystallize from basic and acidic magmas contaminated by convective circulating hot brine on seafloor. Dapingzhang copper-polymetallic deposit is volcanic-hosted massive sulfide (VHMS) deposit, which formed during the Late Carboniferous. The ore-forming materials were mainly derived from the volcanic rocks and the ore-forming fluid was mainly composed of seawater and magmatic water. Finally, it can be concluded that there was a large time gap between diagentic process of the volcanic rocks related to the Dapingzhang VHMS deposit and the ore-forming process. |
| Pages | 94 |
| Language | 中文 |
| Document Type | 学位论文 |
| Identifier | http://ir.gyig.ac.cn/handle/352002/4050 |
| Collection | 研究生_研究生_学位论文 矿床地球化学国家重点实验室 |
| Recommended Citation GB/T 7714 | 钟宏. 云南大平掌矿区火山岩及铜多金属矿床成矿机制研究[D]. 中国科学院地球化学研究所. 中国科学院地球化学研究所,1998. |
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| N97685.pdf（2750KB） | 暂不开放 | -- | Application Full Text | |||
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