葡萄牙NeVes COrVO块状硫化物矿床锡石的微量元素地球化学

对葡萄牙Neves Corvo Cu.Sn多金属矿床锡矿石，富铜硫化物矿石和贫铜硫化物矿石中锡石的微量元素电子探针分析结果的综合研究表明，该矿床存在高温（＞300度），富W的早期锡矿化阶段，钞晚的贫W，富Cu，温度略低（245－295度）的Cu,Sn主矿化阶段，以旬晚的贫W，贫Cu温度更低（约200度）的Cu,Sn矿化阶段，结合Pb同位素研究可以推测矿床中Sn可能来源于矿体下部深处未出露的，与板块俯冲有关的富Sn古老地壳岩石，与其他类型锡矿床的微量元素对比表明，Neves Corvo矿床属于处于火山岩容矿（VHMS）型和沉积岩容矿（SHMS）型块状硫化物矿床之间的一种过渡类型－－伊比利亚型。     

粤东宝山银（锑）矿床地质特征和成因

粤东宝山大型银（锑）矿床产于早侏罗世火山－沉积地层中，银、硫（锑）化物矿体呈脉状，沿下侏罗统金鸡组上段碳质页岩和粉砂岩的层间断裂中分布。矿床深部具青磐岩化蚀变，中部以黄铁矿化、硅化、碳酸盐化主，上部以硅化为特征。矿区自西向东锑矿化减弱，银矿化增强，在垂直方向上，６０ｍ标高之上为锑矿化富集带，０ｍ标高以下为银矿化富集带，研究表明，区域早侏罗世火山－沉积地层可能是矿源层，矿床是与燕山中一晚期火山－次火     

界牌岭锡矿床蚀变矿化分带及其成因探讨

湖南界牌岭锡矿床蚀变矿化可分为条纹状云母萤石岩化—铍矿化带,细脉状云母萤石化—铅锌矿化带、黄玉—萤石—云英岩化—锡铜锌多金属矿化带和弱—无蚀变矿化带.不同蚀变矿化带物质组分迁移规律有不同的特点.其成矿物质主要来源于花岗斑岩,该矿床是与陆壳重熔型花岗岩类斑岩体有成因联系的斑岩型锡矿床.     

古利库金（银）矿床地质特征和成因

吉利库金（银）矿床为冰长石－绢云母型,产出与燕山中期“减压－剪切”环境下中心式火山喷发活动有关;矿床（体）受火山穹隆和爆破角砾岩微及北西向、北东向断裂构造控制;容矿岩石为早白垩世龙江组、光华组安山岩、英安岩和新元古界一下寒武统落马湖群糜棱岩化的长项质片岩、片麻岩 床划分出矿化早期、主期和晚期３个矿化期。６个成矿阶段,３类组分矿体（Ａu型、Ａu－Ａg型和Ａg型）和脉状、网脉状两种形态矿状体;围岩蚀变主要     

粤北大沟谷金矿床矿液的P—T—M体系及迁移富集机制

通过对粤北大沟谷碎裂钠长石岩型金属矿床流体包裹体的研究表明，该矿床成矿流体是震旦纪变质地层在同推覆期的动力分异热液。矿床的形成经历了５个矿化阶段（Ｄ＾１３－Ｄ＾５３）金矿化主要发生在Ｄ＾２３和Ｄ＾４３。矿床形成温度２００～３００℃，压力３７．４～４．３ＭＰａ，为中低温，中浅成矿化。成矿流体ｐＨ为６．７６～７．１４，为弱酸－弱碱环境，流体为Ｎａ－Ｃａ－Ｍｇ（Ｆ）－Ｃｌ型，金可能以硫络合物形式迁移。     

斑岩铜矿床研究中存在的问题与复杂性科学

斑岩铜矿床研究中存在的问题与复杂性科学高合明（中国科学院地球化学研究所，贵阳５５０００２）关键词斑岩铜矿床，蚀变，矿化，裂隙－脉系统，成因模式，复杂性科学斑岩铜矿床占钢产量的６０％以上，它既与斑岩体的形成与演化相关，又与热液蚀变作用有关。矿床中存在大...     

广西某地钽铌铍花岗伟晶岩矿床地质特征

矿床产于Ｆ１与Ｆ２两个北北东向大断裂所夹持的次级北东向构造裂隙中，其特点是：伟晶岩的分异作用不好，脉体内不具分带现象，脉体即是矿体，稀有元素矿化与分异作用的好坏无关，含挥发分和稀碱金属矿物少，稀有元素矿化（和锡、钨）均与伟晶岩晚期结晶的钠长石有密切关系，矿田内伟晶岩脉具水平分带现象。     

广东富湾银矿脉状矿化地球化学特征研究

富湾大型银矿床主要产在下石炭统灰岩与上三叠统页岩断层不整合面下的硅质岩及灰岩中,矿化多为脉状。银矿体铅同位素组成特征和地下伏地层有一定的差异,硫同位素组成均一,脉状银矿化石英脉石英Ｒｂ－Ｓｒ等时线年龄为（６５±２．５）Ｍａ。该矿床主要是后期改造作用形成的。     

会昌县淘锡坝锡矿地质特征、成因初探及找矿意义

淘锡坝锡矿发育有云英岩型，破碎带蚀变岩型、（次火山）隐爆层间裂隙带型等锡矿化，（次火山）隐爆层间裂隙带型锡矿化是矿区主要矿化类型，矿化产于密坑山侵入杂岩体、北西部分鸡笼嶂组流纹质晶屑凝灰熔岩外接触带微细裂隙带中，矿体呈缓倾斜似层状、脉状，控矿因素主要有地层、岩浆岩、构造。矿化对火山岩岩性有一定的选择性，矿矿物质主要来源于岩浆岩，（次火山）隐爆层间裂隙带构造是矿床重要的赋矿构造，矿床成因类型为与火山活动期后次火山（隐爆）活动有关的岩浆期后高-中温热液交代-充填型矿床；同时，矿床兼具广义的斑岩型锡矿的特征，该矿化类型的初步探明，进一步拓展了赣南中生代火山岩区的找矿空间。     

中华人民共和国大厂锡—多金属矿田分带的流体包裹体研究

中华人民共和国大厂锡－多金属矿田是世界上最大的矿床之五，它包括长坡、巴力和龙头山锡－贱金属矿床，大福楼黑色页岩和容矿岩的锡石－硫化物矿床以及拉么Ｃｕ－Ｐｂ－Ｚｎ近端矽卡岩矿床。这些矿床产于泥盆纪富碳酸盐质沉积岩相到靠近下伏燕山期龙箱盖花岗岩９１Ｍａ的角闪角岩相。深成侵入岩和有关的矿化受Ｎ－ＮＷ走向的龙箱盖和长坡背斜控制，Ｆ１逆断层为远端矽卡岩溶液之通道。长坡锡矿化成因上与Ｓ型龙箱盖花岗岩有关，靠近     

Quaternary stresses revealed by calcite twinning inversion: insights from observations in the Savonnières underground quarry (eastern France)

Calcite samples were extracted both from the rock matrix and the superficial coating of a karstified fault plane of an underground quarry, located in the eastern border of the Paris basin. The karstification is dated as Quaternary. Analysis of mechanical calcite twinning reveals that only the calcite matrix has also undergone a compression trending WNW that can be attributed to the Mio-Pliocene alpine collision. Both coating and matrix have undergone a strike-slip regime with σ₁ roughly trending north–south, that could correspond to the regional present-day state of stress, a strike-slip compression rather trending NNW, modified by local phenomena. To cite this article: M. Rocher et al., C. R. Geoscience 335 (2003).     

HYDROGEOLOGY

正20141756 Chen Ruige(Mathematical College,China University of Geosciences,Beijing100083,China);Zhou Xun Numerical Simulation of Groundwater Level Fluctuation in a Coastal Confined Aquifer with Sloping Initial Groundwater Level Induced by the Tide(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(7),2013,p.1099-1104,6 illus.,16 refs.) Key words:confined water,groundwater level     

METAMORPHIC PETROLOGY

正20141408 Cai Jia(Institute of Geology,Chinese Academy of Geological Sciences,Beijing100037,China);Liu Fulai Petrogenesis and Metamorphic P-T Conditions of Garnet-Spinel-Biotitebearing Paragneiss in Danangou Area,Daqingshan-Wulashan Metamorphic Complex Belt(Acta Petrologica Sinica,ISSN1000-0569,CN11-1922/P,29(7),     

SERIALS

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GEOPHYSICAL EXPLORATION

正20142386An Guoying(China Aero Geophysical Survey and Remote Sensing Center for Land and Resources,Beijing 100083,China)Application of Satellite Remote Sensing in Regional Hydrogeological Investigation:Taking Cenozoic Strata in Wenquan Sheet(1∶250 000)of Karakoram Range as an Example(Geosci-     

QUATERNARY GEOLOGY & GEOMORPHOLOGY

正20141016An Chengbang(Key Laboratory of Western China’s Environmental Systems,Ministry of Education,Lanzhou University,Lanzhou 730000,China);Zhao Yongtao Lake Records during the Last Glacial Maximum from Xinjiang,NW China and Their Climatic Impli-     

PETROLEUM GEOLOGY

正20141538 Cao Qing(School of Earth Sciences and Engineering,Xi’an Petroleum University,Xi’an 710065,China);Zhao Jingzhou Characteristics and Significance of Fluid Inclusions from Majiagou Formation,Yichuan Huangling Area,Ordos Basin(Advances in Earth Science,ISSN1001-8166,CN62-1091/P,28(7),2013,p.819-828,7 illus.,3 tables,43 refs.)     

GEOCHEMISTRY

正20142002 Wei Hualing(Institute of Geophysical and Geochemical Exploration,Chinese Academy of Geological Sciences,Langfang065000,China);Zhou Guohua Element Content and Mineral Compositions in Different Sizes of Soil in Tongling Area,Anhui Province(Geological Bulletin of China,ISSN1671-2552,CN11-4648/P,32(11),2013,p.1861     

ENGINEERING GEOLOGY

正20141768 An Shaopeng(Institute of Rock and Soil Mechannics,Chinese Academy of Sciences,Wuhan 430071,China);Wei Lide Experimental Study on Mechanical Behavior of Xigeda Formation Siltstone and Structure Interface(Journal of Engineering Geology,ISSN1004-9665,CN11-3249/P,21(5),2013,p.702-708,9illus.,1 table,16 refs.)     

HISTORICAL GEOLOGY & STRATIGRAPHY

正20140985Chen Liang(Post-Doctoral Research Station of Mining Engineering,School of Nuclear Resources and Nuclear Fuel Engineering,University of South China,Heng-yang 421001,China);Huang Wei Composition of Major and Correlated Elements with Organic Matters and Paleoclimatic Implication for Lower Paleogene Sediments in Sanshui Basin