地学前缘 ›› 2010, Vol. 17 ›› Issue (2): 35-44.

• 论文 • 上一篇    下一篇

学习实践“改造成矿作用”理论——以滇中砂岩铜矿为例兼论改造作用的上、下限问题

冉崇英, 胡煜昭, 吴鹏, 何明勤, 陈好寿, 王学焜, 韩润生   

  1. 1昆明理工大学 国土资源工程学院, 云南 昆明 650093
    2中国有色金属矿产地质调查中心 西南地质调查所, 云南 昆明 650093
    3贵州大学 资源与环境工程学院, 贵州 贵阳 550025
    4浙江大学 地球科学系, 浙江 杭州 310008
  • 收稿日期:2009-12-14 修回日期:2010-02-02 出版日期:2010-03-15 发布日期:2010-04-05
  • 作者简介:冉崇英(1928—), 男, 教授, 从事矿床地球化学教学与研究。第17卷 第2期2010年3月地学前缘(中国地质大学(北京); 北京大学)
  • 基金资助:

    国土资源部资助项目“西南地区层控多金属矿床成矿规律总结研究”(20089943)

Learning and practicing  the theory of Reworked Metallization—An example from the sandstonehosted copper deposits  in Central Yunan with special reference  to the defining of  upper and lower limits of the Reworked Metallization.

DAN  Chong-Yang, HU  Yu-Zhao, TUN  Feng, HE  Meng-Qi, CHEN  Hao-Shou, WANG  Hua-Kun, HAN  Run-Sheng   

  1. 1Faculty of Land and Resource Engineering, Kunming University of Science and Technology, Kunming 650093, China
    2SouthWest Institute of Geological Survey, Geological Survey Center for Nonferrous Metals Resources, Kunming 650093, China
    3College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, China
    4Department of Earth Sciences, Zhejiang University, Hangzhou 310008, China
  • Received:2009-12-14 Revised:2010-02-02 Online:2010-03-15 Published:2010-04-05

摘要:

“改造成矿作用”是涂光炽院士提出的新理论。这一理论有如下基本论点和鲜明特色:矿质来源的广泛性;成矿流体的特殊性;成矿元素的活泼性;改造作用的内生性;断裂构造的主导性;赋矿岩石的多样性;改造矿床的普遍性;成矿作用的独特性与应有地位——矿床分类的四分法。滇中大姚牟定式砂岩铜矿是典型的沉积成岩后生改造成因。其主要论据与以下要素有关:裂谷成矿背景;矿源层(K、J)、矿源岩(元谋古陆);矿体受地层层位、岩相、岩性控制,其生成与煤系(提供有机质)、盐层(提供卤素)密切相关;矿体形态产状、矿石结构构造、成矿流体性状与水的来源、有机质类型及其作用在不同成矿期、成矿阶段显著不同。从岩石学的名词概念来解读和划分“改造成矿作用”的上限与下限:上限确定在后生作用之后,下限在变生作用之末。

关键词: 改造成矿作用, 上、下限, 滇中砂岩铜矿, 沉积成岩后生改造成矿

Abstract:

The concept of “Reworked Metallization” is a new theory proposed by Prof. Tu Guangzhi. This theory has its basic arguments and distinctive characteristics as follows: the extensiveness of metallogenic material; the uniqueness of oreforming fluids; the activity  of the metallogenic elements; the endogenic characteristic of the reworked metallization; the  leading role played by faulting; the diversity of the host rocks; the widespreading of the reworked deposits. Their metallization is unique and has a proper position in the fourfold division of ore deposits. DayaoMouding type of sandstonehosted copper deposits in Central Yunnan are of typical sedimentarydiageneticanadiageneticreworked metallogeneses. Their main arguments are as follows: rifting metallogenesis setting; source bed (K,J) and source rock (Yuanmou paleocontinent); the ore bodies are controlled by stratigraphy, lithofacies and lithology. Their characteristics and their occurrence are closely related to coal series which provides organic matter and salt bed  that in turn provides halogen for the ore. The shape and occurrence of ore bodies, the texture and structure of ores, the behavior  of oreforming fluids and the source of water and the type of organic matter  and its effect  are distinct during different metallogenetic stages. To interpret and determine the limits of reworked metallization in terms  of the concepts of petrogeny, the upper limit (beginning) is set  afteranadiagenesis and the lower limit (ending) is at the end of quasimetamorphism.

Key words: reworked metallization, upper and lower limits, sandstonehosted copper deposits in the central Yunnan, sedimentarydiageneticanadiageneticreworked metallization

中图分类号: