| 论滇中砂岩铜矿浅、紫交互带赋矿及其金属硫化物分带之成因与成矿作用演化 |
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| 引用本文： | 胡煜昭,吴鹏,冉崇英.论滇中砂岩铜矿浅、紫交互带赋矿及其金属硫化物分带之成因与成矿作用演化[J].地质论评,2013,59(5):893-899. |
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| 作者姓名： | 胡煜昭 吴鹏 冉崇英 |
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| 作者单位： | 1. 昆明理工大学国土资源学院,昆明,650093;云南省矿产资源预测评价工程实验室,昆明,650093
2. 昆明理工大学国土资源学院,昆明,650093 |
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| 基金项目： | 本文为国家自然基金资助项目(编号41102049),国土资源部我国典型金属矿科学基地研究（编号20091107），国土资源部危机矿山西南层控矿床成矿规律总结研究项目（编号20089943）,地质过程与矿产资源预测云南省创新团队，云南省高校成矿动力学与隐伏矿预测创新团队的成果。 |
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| 摘 要： | 康滇古大陆裂谷的发生和演化造就了楚雄盆地,沉积出煤、铜、盐旋回与含矿建造和矿床组合.铜矿的生成(特别是改造富集)与煤(有机质)、盐(热卤水)密切相关.大姚—牟定式砂岩铜矿以其规模最大而具代表性.它的成矿作用的演化是从风化沉积作用到成岩作用、后生作用再到改造作用.作用的结果是分别产生含铜有机质沉积体、成岩矿层、后生矿层和改造富矿体.层状矿体赋存于砂岩浅紫交互带是氧化性流体与还原性流体相汇于斯而发生氧化—还原反应沉积成岩的结果.其金属硫化物的生成顺序与分带是遵循S、O、Fe、Cu热液体系中矿物共生组合规律的,随介质条件、四元素浓度的差异而变化.
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| 关 键 词： | 砂岩浅紫交互带 金属硫化物分带 砂岩铜矿 沉积—成岩—后生—改造成矿 |
| 收稿时间： | 2013/3/21 0:00:00 |
| 修稿时间： | 6/8/2013 12:00:00 AM |
A Discussion on the Genesis of Sandstone hosted Copper Deposits Occuring
in the Contact Zone between Purple and Gray Sandstone, Metallic Sulphide
Zoning and the Evolution of Metallization in Central Yunnan |
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| HU Yuzhao
,
WU Peng
,
RAN Chongying.A Discussion on the Genesis of Sandstone hosted Copper Deposits Occuring
in the Contact Zone between Purple and Gray Sandstone, Metallic Sulphide
Zoning and the Evolution of Metallization in Central Yunnan[J].Geological Review,2013,59(5):893-899. |
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| Authors: | HU Yuzhao WU Peng RAN Chongying |
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| Abstract: | The occurrence and evolution of paleo continental rift in the Kangdian region brought up a Chuxiong basin, deposited cycles of ore bearing formations of coal, copper and evaporate, and formed the associated coal, copper and saline deposits. The ore forming especially being rich in reworked period is closely related to salt (brine) and coal (organic material). Dayao Muding type sandstone hosted copper deposits are the largest one and have the best representative characteristics in central Yunnan. Their evolution of metallization is from weathering sedimentogenesis to diagenesis, anadiagenesis and reworking. The products of these metallization respectively are copper organic sediments, diagenetic copper beds, anagenetic copper beds and reworked ore shoots. The stratiform ore body occurred in the contact zone between purple sandstone and gray one, and is mineralized product by oxidation reduction caused by join of oxidated fluid and reducing one. The generation sequence and zoning of the metallic sulphides accord with law of mineral association of O, S, Fe, Cu ions in thermal water system, and vary with medium condition and density of above four elements. |
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| Keywords: | contact zone between purple and gray sandstone metallic sulphide zoning sandstone-hosted copper deposits sedimentary—diagenetic—anagenetic—reworked metallization |
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