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| 粤北盆地流体系统及其矿化特征 | |
| 引用本文： | 邓军,陈学明,方云,程小久,杨立强,孙忠实,王建平.粤北盆地流体系统及其矿化特征[J].地学前缘,2000,7(3):95-102. |
| 作者姓名： | 邓军 陈学明 方云 程小久 杨立强 孙忠实 王建平 |
| 作者单位： | 1. 中国地质大学,北京,100083 2. 中国地质大学,武汉,430074 3. 中国科学院地质与地球物理研究所,北京,100101 4. 吉林大学,长春,130061 |
| 基金项目： | 国家攀登计划项目专题!(953921)，教育部“高等学校骨干教师资助计划”项目，国土资源部“九五”重点基金项目!(950110 )，国土资源 |
| 摘 要： | 盆地构造演化流体系统矿化作用是当代矿床学研究的新课题。盆地演化过程 ,压实流体系统温度场、动力场和地球化学场可以通过地质研究和数字模拟来重塑。粤北晚古生代沉积盆地存在 3种类型的矿化流体。大宝山型流体与岩浆热动力作用有关 ,形成海底火山热液沉积多金属矿床 ;凡口型流体与深部建造的循环热液有关 ,形成中低温海底热泉喷溢沉积铅锌银汞矿床 ;红岩型流体与盆地成岩压实水有关 ,形成低温单一黄铁矿矿床。红岩地区盆地压实流体系统在盆缘古隆起地段形成红岩型黄铁矿矿带的同时 ,还形成特征的白云岩化作用。白云岩产状和组构、白云石“亮边”和“雾心”特征及地球化学特征表明 ,红岩型诸矿床的成因与盆地沉积物压实过程形成的流体有关 |
| 关 键 词： | 流体系统 盆地压实流体 白云岩化 数字模拟 |
CHARACTERISTICS OF LATE PALEOZOIC FLUID SYSTEM OF THE YUEBEI SEDIMENTARY BASIN |
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| DENG Jun,CHEN Xue-ming,FANG Yun,CHENG Xiao-jiu,YANG Li-qiang,SUN zhong-shi,WANG Jian-ping.CHARACTERISTICS OF LATE PALEOZOIC FLUID SYSTEM OF THE YUEBEI SEDIMENTARY BASIN[J].Earth Science Frontiers,2000,7(3):95-102. | |
| Authors: | DENG Jun CHEN Xue-ming FANG Yun CHENG Xiao-jiu YANG Li-qiang SUN zhong-shi WANG Jian-ping |
| Institution: | DENG Jun 1,CHEN Xue ming 1,FANG Yun 2,CHENG Xiao jiu 1,YANG Li qiang 3,SUN zhong shi 4,WANG Jian ping 1 |
| Abstract: | Basin's tectonic evolution fluid system mineralization is a new problem in ore deposit study. There course of basin's evolution, thermal field of compact#ion fluid system, dynamic field and geochemical field can be reconstructed by geological research and numerical simulation. There are three types of mineralization fluids in late Paleozoic in the Yuebei sedimentary basin. The ore bearing fluid of the Dabaoshan deposit is related to magmatic thermal dynamic process, and volcanogene hydrothermal sedimentary polymetallic deposit on seabed was formed. The Fankou Ore bearing fluid is related to circulation hydrothermal in deep formation, and middle lower temperature Pb Zn Ag Hg polymetallic sedimentary deposit by sea floor thermal spring and overflowing was formed. The Hongyan ore bearing fluid is related to the compaction water that formed by the basin's lithogeny process, and low temperature and pyrite only was formed. The compaction fluid system of Hongyan basin formed Hongyan pyrite ore belt in the old upheaved region that situated at the edge of the basin, and at the same time the impressing dolomitization occurred. Dolomite rock occurrence, fabric, dolomite “bright margin” and “fog core” and the geochemical characteristic indicate that a number of Hongyan type pyrite deposits was correlated with the fluids formed by the compacting process of the sediments in basin. |
| Keywords: | fluid system basin's compaction fluid dolomitization numerical simulation |
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