德兴式斑岩型矿床的构造-岩浆-成矿体系

论述了德兴式斑岩型矿床的构造－岩浆－成矿体系、德兴铜矿田是比较典型又独具特色的斑岩型Ｃｕ（Ｍｏ，Ａｕ）矿床，银山Ｃｕ，Ａｕ，Ｐｂ，Ｚｎ，Ａｇ多金属矿区是比较典型的火山一次火山－斑岩成矿体系，三级断裂（裂隙）系统在不同尺度上控岩控矿、中酸性岩浆活动提供成矿元素、成矿热流体、成矿热驱动力和成矿空间，并合作围岩“矿源层”中的成矿物质经转移参与成矿，德 斑放床是构造作用－岩浆作用－成矿作用三位一体统一的地     

江西德兴铜金矿集区成矿规律

德兴矿集区铜金成矿受地层、岩性、岩浆活动、构造等多种因素的控制,通过对控矿作用的研究,指出了矿集区铜金成矿的基本规律.     

辽东裂谷Au、Ag、Pb、Zn、Cu、Co金属矿床地质特征和成矿条件

Au、Ag、Pb、Zn、Cu、Co是辽东裂谷最主要的金属矿床，产于辽河群的不同层位。矿床成因至少可分沉积－变质热液成因、岩浆热液成因和接触交代成因三类。成矿受含矿层、构造、岩浆活动和变质作用控制。矿 源层是成矿前提，构造－岩浆活动是成矿必要条件。构造－岩浆活动叠加改造的矿源层是最佳的成矿和找矿地区。     

德兴大型铜金矿集区构造环境和成矿流体研究进展

江西德兴地区是我国东部成矿带中的大型矿集区之一,集中了铜厂斑岩铜矿、银山多金属矿和金山金矿等大型、超大型矿床。它又处在中国东南部大地构造的关键部位,因此,对德兴大型铜金矿集区的研究始终与该地区的构造背景及演化相伴随。目前对该地区构造格局的认识以NW侧的九岭地体与SE侧的怀玉地体沿赣东北深大断裂带的碰撞拼贴为主流;在这两个地体于晚元古代碰撞拼贴之后,该地区所经历的主要是板内(陆内)的构造活动。德兴大型铜金矿集区的成矿作用与燕山期构造—岩浆活动有着成因上的密切联系,而德兴地区的中元古界地层成矿元素含量较高,不同程度地为本区铜厂、金山、银山等矿床提供了成矿物质。成矿流体的研究成果已表明不同的矿床有不同的流体过程:铜厂斑岩铜矿成矿早阶段以岩浆派生流体为主、而晚阶段(主要成矿阶段)有大气降水的大量参与;银山多金属矿成矿流体主要为大气降水来源;金山金矿的成矿流体则以变质水为重要来源。     

勘查区找矿预测理论与方法在白秧坪矿集区的应用

按照勘查区找矿预测的理论和方法,对白秧坪矿集区之成矿地质体、成矿构造和成矿结构面地质特征的总结和研究,构建了由原始矿源层、后期深源断裂活动、区域逆冲-推覆构造体的三元结构找矿预测模型,为兰坪-思茅盆地寻找与构造活动关系密切的中低温热液多金属矿,提供找矿参考。     

滇中小水井金矿成矿阶段

小水井金矿床形成,经历金元素初始富集形成矿源层、成岩期后剪切-逆冲推覆构造活动中的构造-热液作用富集成矿、中酸性岩浆沿剪切构造带及裂隙系统侵入活动形成含矿热液叠加富集成矿、表生氧化-淋滤再富集成矿等四个成矿期。将构造-热液期进一步划分为四个成矿阶段：石英阶段、黄铁矿-石英阶段、多金属硫化物阶段、石英-萤石-重晶石-碳酸盐化阶段。     

湖南省构造地层地体的划分及其与有色多金属成矿的关系

文章从地体的形成与拼贴方面讨论了湖南省5个构造地层地体的划分,根据各地体的成矿特征不同,按元素组合归纳出五大有色多金属成矿系列,引用"液态矿源层"概念解释大型、超大型矿床的巨量物质来源,认为地体边界断裂带和地体内深大断裂控制了有色金属大型、超大型矿床与矿集区的分布.     

冀北东段中生代火山盆地铀成矿条件分析及远景评价

冀北东段是燕辽成矿带中有成矿远景的地区,不仅对铀成矿有利,同时又是金、多金属成矿的有利地区。工作区地处华北地台北缘东段,位于中生代构造活动带的边缘及多期构造活动带的叠加部位,形成各具特色的双层构造层,且有多期构造岩浆活动,形成有利的矿源层(体)。这些多期热改造事件,使成矿元素具备活化富集的条件。本文在分析区域地质背景及成矿条件的基础上提出3条成矿带及一片成矿有利远景区,并提出金成矿规律及找矿方向。     

古太平洋构造域的岩浆作用与成矿

燕山期中国东部出现了大规模的岩浆活动和成矿事件,探明其发生的地球化学动力学背景以及矿床成因机制,对理解中国东部中生代以来构造格局转变和指导找矿都具有重要意义。本文将从以下5个方面入手,探索古太平洋构造域的岩浆作用与成矿机制:(1)下扬子和江南隆起区燕山期岩浆-成矿作用研究;(2)中国东部燕山期成矿与不成矿埃达克岩及中-新生代玄武岩研究;(3)东秦岭造山带中生代岩浆作用与成矿研究;(4)不同类型钼矿床的钼同位素研究;(5)中国中东部燕山期富碱侵入岩石/正长花岗岩研究。     

新疆哈图-包古图金铜矿集区锆石年龄及成矿特点

晚古生代,新疆西准噶尔地区发生了强烈的构造-岩浆活动和广泛的金、铜成矿作用,形成了哈图-包古图大型金铜矿集区。锆石SHRIMP U-Pb年龄测量表明,含矿闪长岩体形成于312.3±2.2Ma～332.0±2.8Ma,矿集区岩浆活动及其成矿作用发生在石炭纪。哈图-包古图矿集区成矿作用有4个显著特点:(1)地幔流体活动强烈;(2)构造应力转化快速;(3)拉斑系列和钙碱性系列岩浆成矿;(4)多种矿化类型集中发育等。哈图-包古图矿集区发育石英脉型-蚀变岩型金矿床、斑岩型铜矿床和同期的石英脉型-蚀变岩型金矿床以及热液脉型铜金矿床的成矿系列。     

Sensitive High-Resolution Ion Microprobe U-Pb Zircon and 40Ar-39Ar Muscovite Ages of the Yinshan Deposit in the Northeast Jiangxi Province, South China

The Yinshan deposit in the Jiangnan tectonic belt in South China consists of Pb‐Zn‐Ag and Cu‐Au ore bodies. This deposit contains approximately 83 Mt of the Cu‐Au ores at 0.52% Cu and 0.8 g/t Au, and 84 Mt of the Pb‐Zn‐Ag ores at 1.25% Pb, 1.02% Zn and 33.3 g/t Ag. It is hosted by low‐grade metamorphosed sedimentary rocks and mafic volcanic rocks of the lower Mesoproterozoic Shuangqiaoshan Group, and continental volcanic rocks of the Jurassic Erhuling Group and dacitic subvolcanic rocks. The ore bodies mainly consist of veinlets of sulfide minerals and sulfide‐disseminated rocks, which are divided into Cu‐Au and Pb‐Zn‐Ag ore bodies. The Cu‐Au ore bodies occur in the area close to a dacite porphyry stock (No. 3 stock), whereas Pb‐Zn‐Ag bodies occur in areas distal from the No. 3 stock. Muscovite is the main alteration mineral associated with the Cu‐Au ore bodies, and muscovite and chlorite are associated with the Pb‐Zn‐Ag ores. A zircon sensitive high‐resolution ion microprobe U‐Pb age from the No. 3 dacite stock suggests it was emplaced in Early Jurassic. Three ⁴⁰Ar‐³⁹Ar incremental‐heating mineral ages from muscovite, which are related to Cu‐Au and Pb‐Zn‐Ag mineralization, yielded 179–175 Ma. These muscovite ages indicate that Cu‐Au mineralization occurred at 178.2±1.4 Ma (2σ), and Pb‐Zn‐Ag mineralization at 175.4±1.2 Ma (2σ) and 175.3±1.1 Ma (2σ), which supports a restricted period for the mineralization. The Early Jurassic ages for the mineralization at Yinshan are similar to that of the porphyry Cu mineralization at Dexing in Jiangnan tectonic belt, and suggest that the polymetallic mineralization occurred in a regional transcompressional tectonic regime.     

太行山北段中生代成矿时间演化

晚期岩浆和水热成矿作用一直是矿床学研究的重要课题。特别是对岩浆和水热两类作用之间的过渡成矿作用（上界是岩浆水相的出现,下界是岩浆的水饱和固相线）更是当前研究工作的前缘。富水挥发物相的演化和分离是其中心问题。从实验岩石学方面探索,从总结地区和矿床成矿时间演化角度归纳分析,都是积累资料深化认识的基本方法。太行山北段中生代岩浆活动频繁,成矿作用强烈,岩体和岩石种类、矿点和矿化类型都很多。这一地区成矿顺序和矿床形成阶段有明显的规律性,反映了深处岩浆挥发物相演化和分离的特点。文章在介绍有关岩浆活动和成矿作用地质情况的基础上,讨论了成矿时间演化的特点和原因。     

川滇黔相邻区域铜铅锌金银矿床与峨眉火成岩省的关系探讨

通过对川滇黔相邻区热液或热液改造型Cu,Pb,Zn,Au,Ag矿床的地质特征,特别是峨眉火成岩省与该类矿床的成因关系的讨论认为：峨眉地幔柱活动是扬子地台西南缘最大的一次构造—岩浆热事件,对该区Au,Ag,Pb,Zn,Hg,Te,Sb,Se等热液—热液改造型矿床的成矿起着非常重要的控制作用。除可能提供了少量的成矿物质外,更重要的是引起了强烈的壳幔相互作用,造成大区域尺度的异常高热流场,对成矿流体的形成、循环、演化起了重要的促进作用,为成矿、特别是富矿的形成提供了充足的物质条件和热动力条件。     

斑岩铜矿-浅成低温热液银铅锌一远接触带热液金矿矿床模型：一个新的矿床模型——以德兴地区为例

在前人研究的基础上,通过系统的野外考察,论证了位于赣东北德兴地区德乐中生代火山盆地中的德兴铜矿、银山银铜铅锌矿和金山金矿及蛤蟆石金矿属于同一成矿系统。德兴铜矿是典型的斑岩铜矿,成矿流体和金属元素主要来自岩浆;银山银铜铅锌矿是一个下部为斑岩铜矿、上部为浅成低温热液型银铅锌矿,成矿流体早期以岩浆为主,晚期有较多的大气降水参与,成矿物质主要来自岩浆;金山和蛤蟆石金矿是远接触带热液矿床,成矿流体为岩浆热液与大气降水的混合产物,金主要来自围岩——双桥山群浅变质岩。这3套矿床以中酸性花岗斑岩或石英斑岩（高钾钙碱质花岗岩）为核心具有明显的分带性,自中心向外或深部向浅部为：斑岩铜金钼矿、浅成低温热液型银铅锌矿和远接触带热液型金矿。这种矿床组合关系不同于已知的经典斑岩铜矿模型和斑岩铜矿一浅成低温热液金银矿床模型,因而,有必要提出一个新的模型：斑岩铜矿一浅成低温热液银铅锌矿一远接触带热液金矿模型。这套矿『末形成于中侏罗世,抑或是古太平洋俯冲板片局部重熔或撕裂重熔的产物,抑或是在活动大陆边缘岩浆弧后伸展带由地幔底侵的结果。     

Tectonomagmatic Metallogenic System of Dexing Ore Field, Jiangxi, China

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吉林东部火山-岩浆岩区金铜矿成矿模式探讨

吉林东部(延边地区)中生代以来不同方向的断裂构造发育,火山活动强烈,岩浆侵入频繁,与中生代火山-岩浆活动有成因联系的金、铜多金属矿床多处,矿化蚀变线索多见,构成了知名度很高的五凤-小西南岔近东西向火山-岩浆期后低温热液型金、铜多金属成矿带.区内中生代火山-岩浆岩的形成是上地幔岩浆上侵的结果,同时伴有成矿作用的发生,在构造有利部位形成金、金铜或铜金多金属矿体.成矿物质来源于地幔,成矿是在酸性介质中还原条件下发生的.从远源至近源,成矿分带为Au、Ag→Au、Cu、Ag→Cu、Au、Pb、Zn→Cu、(Mo、Au),成矿温度从低温至高温变化,硫化物从贫硫化物向富硫化物变化.     

Temporal-spatial distribution and ore-forming material source of gold,copper and silver polymetallic ore deposits in the Fuping mantle structure zone

This study was conducted following research on metallogenesis in the Zhangjiajie-Xuanhua and East Hebei mantle branch structure zones. The Fuping mantle branch structure zone is one where Au, Cu and Ag polymetallic ore resources are concentrated in North Hebei. However, there has existed a long-standing controversy on the temporal-spatial distribution of ore resources and their ore-forming material sources. In terms of age dating and the comprehensive analysis of S, Pb, O, C and Si isotopes, it is considered that the temporal-spatial distribution of ore resources in this mantle branch structure zone is obviously controlled by the Fuping mantle branch structure. In space there is developed such a metallogenic pattern as to be Ag, Pb and Zn polymetallic ore deposits with gold appearing inside and copper appearing outside. Metallogenesis is dated mainly at Yanshanian, the ore-forming mate-rials were derived predominantly from the deep interior of the Earth, and ore-forming fluids were derived largely from Yanshanian magmatism.     

Types,features, and prospecting potential for Mesozoic metal ore deposits in Zhejiang Province,southeast China

The geotectonic units of Zhejiang Province include the Yangtze Plate in the northwest juxtaposed against the South China fold system in the southeast along the Jiangshan–Shaoxing fault. The South China fold system is further divided into the Chencai–Suichang uplift belt and the Wenzhou–Linhai geotectogene belt, whose boundary is the Yuyao–Lishui fault. The corresponding metallogenic belts are the Mo–Au(–Pb–Zn–Cu) metallogenic belt in northwest Zhejiang, the Chencai–Suichang Au–Ag–Pb–Zn–Mo metallogenic belt, and the coastal Ag–Pb–Zn–Mo–Au metallogenic belt. The main Mesozoic metal ore deposits include epithermal Au–Ag(Ag), hydrothermal vein-type Ag–Pb–Zn(Cu), and porphyry–skarn-type Mo and vein-type Mo deposits. These ore bodies are related to the Mesozoic volcanic-intrusive structure: the epithermal Au–Ag(Ag) deposits are represented by the Zhilingtou Au–Ag deposit and Houan Ag deposit and their veins are controlled by volcanic structure; the hydrothermal vein-type Ag–Pb–Zn deposits are represented by the Dalingkou Ag–Pb–Zn deposit and also controlled by volcanic structure; and the porphyry–skarn-type Mo deposits are represented by the Tongcun Mo deposit and the vein-type Mo deposits are represented by the Shipingchuan Mo deposit, all of which are related to granite porphyries. These metal ore deposits have close spatio-temporal relationships with each other; both the epithermal Au–Ag(Ag) deposits and the hydrothermal vein-type Ag–Pb–Zn deposits exhibit vertical zonations of the metallic elements and form a Mo–Pb–Zn–Au–Ag metallogenetic system. These Jurassic–Cretaceous deposits may be products of tectonic-volcanic-intrusive magmatic activities during the westward subduction of the Pacific Plate. Favourable metallogenetic conditions and breakthroughs in the recent prospecting show that there is great resource potential for porphyry-type deposits (Mo, Cu) in Zhejiang Province.     

Metallogenesis related to Mesozoic Granitoids in the Nanling Range, South China and Their Geodynamic Settings

Affected by the compressive stress from the South-Central （Indo-China） Peninsula, the Indosinian orogenesis, characterized by collision, thrust and uplifting, took place inside the South China Plate during 250-230 Ma. The ages of the Indosinian granitoids in the Nanling Range and vicinity areas are mostly 240-205 Ma, indicating that they were emplaced in both late collision and post-collision geodynamic environments. No important granite-related metallogenesis occurred in this duration. A post-orogenic setting started at the beginning of the Yanshanian Period, which controlled large-scale granitic magmatism and related metallogenesis. This paper makes the first attempt to divide the Yanshanian Period into three sub-periods, i.e. the early, middle and late Yanshanian Periods, based mainly on the features of magmatism, especially granitoids and related metallogenesis and their geodynamic environments. The magmatic association of the Early Yanshanian （about 185-170 Ma） comprises four categories of magmatism, i.e. basalt, bimodal volcanics, A-type granite and intraplate high-K calc-alkaline （HKCA） magmatism, which indicates an extension-thinning of lithosphere and upwelling of mantle material to a relative small and local extent. Pb-Zn, Cu and Au mineralizations associated with HKCA magmatism represents the first high tide of Mesozoic metallogenesis in the Nanling Range area. During the middle Yanshanian, the lithosphere was subjected to more extensive and intensive extending and thinning, and hence mantle upwelling and basaltic magma underplating caused a great amount of crust remelting granitoids. This period can be further divided into two stages. The first stage （170-150 Ma） is represented by large-scale emplacement of crust remelting granites with local tungsten mineralization at its end. The second stage （150-140 Ma） is the most important time of large-scale mineralizations of non-ferrous and rare metals, e.g. W, Sn, Nb-Ta, Bi, Mo, Be, in the Nanling Range area. The late Yanshanian （140-65 Ma） was generally characterized by full extension and breakup of the lithosphere of South China. However, owing to the influence of the Pacific Plate movement, the eastern part of South China was predominated by subduction-related compression, which resulted in magmatism of calc-alkaline and shoshonite series and related metallogeneses of Au, Ag, Pb-Zn, Cu and （Mo, Sn）, followed by extension in its late stage. In the Nanling Range area, the late Yanshanian magmatism was represented by granitic volcanic-intrusive complexes and mafic dikes, which are genetically related to volcanic-type uranium and porphyry tin deposits, and the mobilization-mineralization of uranium from pre-existing Indosinian granites.