【摘要】 南岭是中国重要的钨锡多金属成矿带。岩浆活动及成矿作用具有多阶段性的特点,成岩成矿作用具有统一的地质背景及构造应力场。陆壳重熔型花岗岩类不同成岩阶段具有极为一致的稀土元素分布模式,暗示它们的定位和冷却都是在深部同源岩浆分异事件中形成的;岩石和矿石稀土球粒陨石标准化曲线有着相似的变化特征,反映成矿与岩浆活动有着密切的成因联系,物质来源上具有一致性;矿石硫化物和岩石长石Pb同位素组成相近,显示成岩成矿物质有明显的亲缘关系。结合多数情况下矿脉切穿已固结岩体的地质事实,推测燕山中期陆壳重熔型花岗岩类成岩成矿物质主体来自深部同一岩浆源区,为同源岩浆分异演化不同阶段的产物;燕山晚期花岗质火山—侵入杂岩与相关锡铀矿化空间上密切伴生,物质来源也具同源性。典型复式岩体同源岩浆不同阶段侵位及相匹配的成矿作用时差一般小于10.0Ma,集中在0～8.0Ma。结合华南中生代岩石圈多次伸展活动的区域背景及矿床(田)地质特征,推测南岭地区的多阶段成岩成矿作用是脉动式构造演化的产物,成岩成矿物质来自深部同一岩浆房的不同演化阶段。更多还原

【Abstract】 The Nanling(means “south mountains”,locates in northern Guangdong,eastern Guangxi,southeastern Guizhou,southern Hunan and southern Jiangxi)region is the most important W—Sn—polymetal metallogenic belt in China.Magmatic action and metallogeny possess multiple characteristics.Diagenesis and metallogeny have consistent geological setting and tectonic stress field.For different diagenetic phases of the crustal remelting granitoids,they have the uniform REE distribution patterns suggesting their emplacement and cooling are resulted from the deep comagmatic fractional event;The igneous rocks and ores show similar chondrite-normalized curve variations reflecting the consanguineous genetic relationship between them and consistent material origin;The similar Pb compositions between ore sulfides and feldspars show the diagenesis and mineralization materials are close affinity.Combined with the fact that the ore veins usually cut through the concretion granite pluton,it’s considered that the diagenetic and metallogenic materials for the Middle Yanshanian crustal remelting granites mainly come from the same deep sources and are productions of comagmatic evolution of the same provenance but different stages;Late Yanshanian Sn—U deposits are spatially associated with the granitic volcanic—intrusive complexes and they are also single-sourced.The time gap between different stage of some typical compound massifs and its suited metallogeny is commonly less than 10.0 Ma,clusters between 0 and 8.0 Ma.In view of the Mesozoic multiple lithosphere extension in South China and deposit geological features,this paper confirms that the multistaged diagenesis and metallogeny in the Nanling region are productions of pulsative tectonic evolution and diagenetic and metallogenic materials are from different evolution stages of the deep comagmatic chambers.更多还原