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| 1 | 滇-黔地球化学边界似基韦诺(Keweenaw)型铜矿床的发现显示文摘在滇-黔边界北西向地球化学急变带的北东侧存在很强的铜异常,野外观察发现了富的自然铜-氧化铜工业矿体和广泛的矿化点,矿化受二叠纪玄武岩最上部古火山口环境和上覆宣威组炭泥质层控制,产于火山角砾岩、凝灰岩、含炭硅质岩、硅质沥青岩和气孔状熔岩中,矿层厚度变化在15~80 m,矿石矿物主要为自然铜、氧化铜矿和辉铜矿,其中鲁甸沿河铜矿铜含量变化在0.5%~20%左右(在一个剖面上平均为4%).自然铜呈板片状、网脉状、浸染状产出.氧化铜、辉铜矿和硅铜矿类呈浸染状、团块状产出,矿化与阳起石化、沥青化、沸石化和硅化密切相联系,表明成矿涉及在强壳幔相互作用、有机-无机相互作用下的还原环境,成矿温度变化在400~100℃,从成矿地质背景、矿石类型和蚀变现象看,与美国苏必利湖的Keweenaw自然铜矿床较为相似. | 朱炳泉 胡耀国 张正伟 常向阳 | 2002 | 中国科学(D辑)2002，32，z1： | 46 |
| 2 | Discovery of the copper deposits with features of the Keweenawan type in the border area of Yunnan and Guizhou provinces显示文摘There existed intense Cu anomaly on the northeastern side of the geochemical boundary with NW strike in the border area between the Yunnan and Guizhou provinces. Through field observation, ore bodies of high-grade native coppers have been found. The copper mineralization was constrained by the ancient volcanic vents of Permian basalt eruption and the overlain strata of carbonaceous argillites. Native coppers with flaky, net veined and impregnated occurrences, fine-grained tenorites and massive chalcocites widely occur in volcanic breccias, tuffs, carbonaceous-siliceous argillites and siliceous bitumen rocks with bed thickness of about 15-80 m. Cu contents vary from 0.5% to 20%. The copper mineralization was tightly related to actinolite-tremolitization, zeolitization and bituminization and involved in extensive reduction environments. Continental flood basalts erupted in mantle plume environments usually have high Cu concentrations (~170 ×10-6 in the Emeishan basalts), which provided a copper source of mineralization. Thus, metallogenesis of the native copper deposits in the Yunnan-Guizhou border area is tightly associated with intensive crust-mantle and organic-inorganic interactions. The tremolitization and chalcocitization indicate that the metallogenic temperatures are in a range of 400-100℃. The geologic background and characteristics of ore and alteration for the native copper deposits in this area are somewhat similar to those of the Keweenawan native copper deposit in Michigan, USA. | 朱炳泉 胡耀国 张正伟 常向阳 | 2003 | Science China Earth Sciences2003，46，z1： | 19 |
| 3 | 地球化学急变带与地幔柱资源系统显示文摘地幔柱产生大面积软流圈上涌,沿深断裂形成岩浆房,导致大规模溢流玄武岩裂隙式喷发。良好的地幔柱成矿系统常出现在岩石圈不连续界面和三叉拼接裂谷,表现为地球化学急变带。地幔柱资源系统包括以下几方面:(1)地幔柱岩浆分异成矿系统,从封闭到开放环境的岩浆分异形成了富钛、富镁和低钛三个岩浆端员,构成了Cu Ni(PGE)硫化物、Fe Ti V氧化物和Cu Ag自然金属三个成矿体系;(2)地幔柱同生火山热液成矿系统,包括赤铁矿 阳起石 硅化氧化铜,沥青化 绿泥石 浊沸石化自然铜和碳酸盐化硫化物三个成矿体系;(3)地幔柱同构造盆地油气系统,巨量岩浆的快速成溢流导致地壳的快速沉降,形成同构造热盆地,具有油气前景;(4)地幔柱火山岩、硅质岩和富有机质砂页岩组合为优势生态体系提供了地质环境。 | 朱炳泉 常向阳 胡耀国 张正伟 | 2003 | 矿物岩石地球化学通报2003，22，4： | 13 |
| 4 | 滇黔边界大规模自然铜矿化的极端成矿条件耦合显示文摘野外观察发现在滇黔边界存在很富的自然铜工业矿体和广泛的自然铜矿化点。矿化受二叠纪玄武岩最上部古火山口环境和上覆宣威组炭泥质层控制,矿层厚度达15m左右。矿石矿物主要为自然铜、黑铜矿与辉铜矿(平均品位4%~5%)。自然铜呈板片状、网脉状、浸染状产出。矿化与阳起石化、沥青化、硅化和沸石化密切相联系。该区大规模自然铜矿化涉及多种极端成矿条件的耦合:①从苦橄质到安山质高分异岩浆喷发;②火山口环境从400°C至100°C的变温同生热液活动,使CuO沉淀和生烃作用同时发生,并随后还原出自然铜;③出现罕见的炭质泥岩、生物硅质岩和硅质沥青岩组合,形成极富的矿石。 | 胡耀国 朱炳泉 常向阳 | 2002 | 矿床地质2002，21，S1： | 10 |
| 5 | Geochronology and Geochemical Characteristics of the Early Mesozoic Tangquan Pluton in Southwestern Fujian and Its Tectonic Implications显示文摘The Tangquan granodioritic pluton in Datian County, southwestern Fujian, China, which extends in a NE direction with an exposed area of about 130 km2, used to be considered a product of Early Cretaceous magmatism. The present study suggests for the first time that the pluton was formed in the Early Jurassic by using multiple methods for isotopic dating, which give zircon U-Pb ages of 186.8 Ma and 179.0 Ma, Rb-Sr isochron age of 162.02(4.5 Ma, and biotite 40Ar/39Ar plateau age of 158.1(0.7 Ma. The cooling rate for the pluton was relatively low (4.76°C/Ma) during the early stage (183(162 Ma) because of the compressional environment. It was emplaced in a higher cooling rate (50°C/Ma) in an extensional environment during the later stage (162(158 Ma). The granodiorites are metaluminous(peraluminous, relatively enriched in Na2O and depleted in K2O, and characteristic of I-type granites of crust-mantle mixed sources. They are moderately enriched in Rb, Th, Hf and LREE, and depleted in Ti, Nb, Ta and Sr, and have geochemical features of cal-alkaline rocks of an island arc or active continental margin. Their (87Sr/86Sr)i ratio varies from 0.70769 to 0.70822, εNd(t) from -9.68 to -10.07 and TDM from 1.52 to 1.55 Ga. They were formed by mixing of mantle-derived mafic magma with the granitic magma resulting from partial melting of crust-derived materials in an upwelling of the asthenospheric mantle in South China during the Early Mesozoic. | MAO Jianren, HU Qing, XU Naizheng, XIE Fanggui and TAO Kuiyuan, Nanjing Institute of Geology and Mineral Resources, Nanjing, Jiangsu 210016 E-mail: mjrmh@sina.com Hao Ziguo and Zhu Xiling | 2003 | Acta Geologica Sinica(English Edition)2003，77，3： | 10 |
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