| 粤北晚古生代盆地压实流体的性状 |
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| 引用本文： | 邓军,陈学明,沈崇辉,杨立强.粤北晚古生代盆地压实流体的性状[J].矿物岩石地球化学通报,2000,19(3):149-154. |
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| 作者姓名： | 邓军 陈学明 沈崇辉 杨立强 |
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| 作者单位： | 1. 中国地质大学,北京,100083
2. 中国科学院,地质与地球物理研究所,北京,100101 |
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| 基金项目： | 国家攀登计划项目专题!( 95预 3 9 2 1)，国土资源部“百名跨世纪科技人才培养计划”基金项目!( 980 8)资助 |
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| 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。盆地演化过程中，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三种类型的矿化流体。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。粤北晚古生代盆地沉积物主要由透水性较好的粗碎屑物质和碳酸盐组成，沉积建造厚度较薄，数字模拟结果表明，盆地压实流体系统难以形成较高的地热储和流体势，不可能形成自身的突发喷溢。但在同生断裂作用引导下，流体在沉积层的特殊部位汇聚形成红岩型低温黄铁矿矿床。
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| 关 键 词： | 盆地 晚古生代 矿床 流体 形成 热液 动力场 特殊部位 银汞 突发 |
The Characteristics of Later Paleozoic Compaction Fluid System of North-Guangdong Sedimentary Basin |
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| DENG Jun,CHEN Xue-ming,SHEN Chong-hui,YANG Li-qiang.The Characteristics of Later Paleozoic Compaction Fluid System of North-Guangdong Sedimentary Basin[J].Bulletin of Mineralogy Petrology and Geochemistry,2000,19(3):149-154. |
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| Authors: | DENG Jun CHEN Xue-ming SHEN Chong-hui YANG Li-qiang |
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| Abstract: | Basin tectonic evolution-fluid system-mineralization is a new research task in ore deposit. The course of basin evolution , thermal field of compaction fluid system, dynamic field and geochemical field can be demonstrated by geological research and numerical simulation. There are three types of mineralization fiuid in Later Paleozoic sedimentary basin in North Guangdong province. The ore-bearing fluid of Dabaoshan deposit was relate to magmatic thermal dynamic process and formed hydrothermal sedimentary polymetallic deposit at seafloor .The ore-bearing fluid of Fankou was relate to circulation hydrothermal fluid in deep formation and formed Pb Zn Ag Hg polymetallic middle-lower temperature sedimentary deposit by sea floor thermal spring overflowing. The ore bearing fluid of Hongyan leposit was relate to the compaction water that formed by the basin lithogeny process,formed low temperature pyrite deposit. The sediment of Later Paleozoic sedimentary basin in North Guangdong province was mainly made up of coarse clastics which had well water penetrating and carbonate and the thickness of sedimentary formation was much thin.Numerical simulation demonstrate that basin compaction fluid system was not possible to form upper terrestrial heat store and upper fluid potentials, and the sudden automatic eruption is impossible, but the ore bearing fluid can be pooled in special part of the sedimentary layers to form Hongyan low temperature pyrite deposit by induction of simultaneous fault. |
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| Keywords: | North Guangdong basin fluid types basin compaction fluid numerical simulation |
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