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现代地质 ›› 2004, Vol. 18 ›› Issue (1): 1-7.

• 矿床·矿物·岩石 •    下一篇

南岭地区两种类型盆地的压实流体系统及其矿化作用

邓军1,陈学明1,饶轶群1,孙忠实2,程小久1,沈崇辉1,王庆飞1   

  1. 1中国地质大学“岩石圈构造、深部过程度探测技术”教育部重点实验室,北京100083
    2吉林大学地球科学学院,吉林长春 130061
  • 收稿日期:2003-12-10 修回日期:2003-12-26 出版日期:2004-01-20 发布日期:2004-01-20
  • 作者简介:邓军,男,教授,博士生导师,1959年出生.矿床学和构造地质学专业,主要从事区域构造、威矿流体及成矿动力学的教学和科研工作。
  • 基金资助:

    教育部跨世纪优秀人才培养计划及“科学技术研究重点项目”(01037);国家自然科学基金项目(40172036)

TWO KlNDS OF COMPACTION FLUID SYSTEMS OF THE NANLING AREAMAND THEIR MINERALIZATIONS

DENG Jun1,CHEN Xue-min1,RAO Yi-qun1,SUN Zhong-shi2,CHENG Xiao-jiu1,SHEN Chong-hui1,WANG Qing-fei1   

  1. 1 China University of Geoscience, Beijing 10083,China;2 Jilin University , Changchun, Jilin 130061, China

  • Received:2003-12-10 Revised:2003-12-26 Online:2004-01-20 Published:2004-01-20

摘要:

盆地构造演化一流体系统一矿化作用是矿床学研究的前缘课题。盆地演化的特征直接影响盆地沉积建造的结构特征。建造结构和地球化学特征对压实流体系统的温度场、动力场、地球化学场和矿化作用产生决定性的影响。滇东南白牛厂早古生代盆地是典型的裂谷式凹陷盆地,上万米厚的黑色页岩与卜部碳酸盐岩和砂岩组台有利丁矿化的压实流体系统的形成,形成了白牛厂式超大型银多金属矿床。粤北晚古生代盆地为地台型浅海盆地,沉积物主要由透水性较好的粗碎屑物质和碳酸盐岩组成,沉积建造厚度较薄。数字模拟结果表明,粤北盆地压实流体系统难以形成较高的地热储和流体势,流体只能在沉积层的特殊部位汇聚并形成红岩型低温黄铁矿矿床。

关键词: 盆地演化, 建造结构, 盆地压实流体系统, 矿化潜力, 成矿作用, 南岭地区

Abstract:

Basin’s tectonic evolution-fluid system-mineraIizatbn is a new frontier of ore deposits. The characteristlc of basin’s evolution affects the structure of the sedimentary formation directly. Structures of the formations and the character of geochemistry played a crucial role in the forming of thermal field of compaction fluid system, dynamic field and geochemical field and mineralization. Yuebei Late Paleozoic sedimentary basin was mainly made up of coarse clastics with high permeabmty, and the thicknesses of carbonate and the sedlmentary formation were thin. Numerical simulation demonstrated that basin’s
compaction fluid system cann’t form upper terrestrial heat store and upper fluid potentials,the ore-bearing fluid can onIy be stored in special parts of the sedimentrary layers to form Hongyan low temperature pyrite deposit.Bainiuchang Early Paleozoic sedimentary basin is a typical rift. The fluid from several thousands of meters of black shale and its upper carbonate and sandstone formations constituted compaction fluid system which concentrated the metalIogenic elements and formed the Bainiuchang super-large silver-polymetallic deposit.

Key words: basin evolution, formation’s character, basin compaction fluid, mineralization, the Nanling area

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