黄沙坪铅锌矿床中银矿化组合特征

研究黄沙坪铅锌矿床中银矿化组合表明：与３０１花岗斑岩和３０４花斑岩岩体有关铅（锌）－银－锡－锑矿化组合，银矿化伴随铅矿化出现，其微量元素富Ｓｎ、Ｓｂ、Ａｇ，低Ｂｉ、Ｔｅ、Ｍｏ、Ｗｏ、Ｗ为特征；银矿物组合以硫银锡矿－银黄锡矿－深红银矿－螺状硫银矿－硫锑铜银矿组合为特征，与石英斑岩有关的铜（钼）－银－碲矿化组合，铜矿石以高Ｔｅ、Ｂｉ、Ｍｏ和Ｗ，低Ｓｂ为特征，银矿物组合以碲银矿－六方碲银矿－粒碲银组合和硫银铋矿－块辉铋铅银矿－碲银矿组合为特征     

江西岩背含锡斑岩主要造岩矿物标型特征

江西会昌岩背Ｊ３－Ｋ１时期形成的火山穹窿由火山岩，次火山岩和侵入岩组成，大型斑岩型锡矿床赋存于含黄玉花岗斑岩与（次）流纹斑岩内外接触带上，成矿岩体花岗斑岩和花岗岩富Ｓｉ富Ｆ，其钾长石均为Ａｌ／Ｓｉ有序的低微斜长石，黑云母为含Ｌｉ富Ｆ的铁叶云母或黑鳞云母，具低Ｍｇ／ΣＦｅ（ＭＦ）值，所含岩浆晚期阶段结晶的黄玉，其成分接近于氟黄玉端元，并具有较短的ｂ轴，不同于玻利维亚Ｓｎ－Ｂ型，本区为Ｓｎ－Ｆ型，这是     

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。     

浙江洋滨斑岩锡矿的同位素地质研究

洋滨斑岩锡矿的含矿母岩为燕山晚期黄玉花岗斑岩。高的（＾８７Ｓｒ／＾８６Ｓｒ）１和＾２０７Ｐｂ／＾２０４Ｐｂ值表明，它主要来源于地壳物质。根据氧，氧，硫，铅和锶同位素数据并结合矿床地质特征，笔者认为，成矿流全由岩浆水和大气降水混合组成，成矿物质主要原源于花岗斑岩，部分可能源于基底变质岩。     

广西凤凰山银锰矿床S—Fe—Cu—Ag—Sn系列矿物标型特征

文章通过广西凤凰山银锰矿床中的Ｓ－Ｆｅ－Ｃｕ－Ａｇ－Ｓｎ系列矿物黄锡矿，含银黄锡矿，银黄锡矿，硫银锡矿的化学成分标型，标型矿物组合特征的研究，为该矿床的成因，深部隐伏银矿化，矿区及其外围的找矿提供了一定的信息。     

湖南骑田岭芙蓉矿田锡矿地质特征及控矿因素初步分析

湖南骑田岭芙蓉矿田是近几年发现的超大型规模的锡多金属矿田，目前 已发现锡矿脉（体）40多条，锡矿类型有构造蚀变带型、蚀变岩体型、云英岩型、斑岩型、夕卡岩型、石英脉型、冲积型等多种。该矿田可划分为白腊水－安源、黑山里－麻子坪、山门口－狗头岭3个北东向锡矿带。本文在介绍矿田地质背景的基础上，对矿田锡矿地质特征进行了初步总结，对其控矿因素进行了初步分析，认为该区可望成为世界级锡矿资源基地。     

内蒙古毛登锡铜矿床地质及成因

内蒙古毛登锡铜矿床是大兴安岭南段的锡多金属矿床之一。该矿床是与阿鲁包格山花岗斑岩（Ｒｂ－Ｓｒ等时线年龄１４９×１０＾－６ａ），锶同位素初始比值为０．７０５）有关的具中等成矿深度和成矿温度的热液脉型锡铜矿床。矿床中主要产出锡矿体，它们分别以微脉、细脉和大脉的形式充填于自接触带向外的ＮＷ向断裂裂隙系统中。钾化（磁铁矿矿化）、云英岩化（锡石或辉钼矿矿化）和硅化（硫化物矿物）三个蚀变－矿化阶段流体的温度和     

浙江泰顺洋滨黄玉斑岩地球化学特征和成因

浙江泰顺洋滨斑岩锡矿成矿母岩为黄玉斑岩类岩脉，长约２ｋｍ，宽２－２０ｍ，岩性可分黄玉钾长花岗斑岩、黄玉二长花岗斑岩和黄英斑岩三种。黄玉含量占１０％－２０％，具火成斑状结构。岩石为强过铝质（Ａ／ＮＫＣ＝１．５７４－１２．９４），高Ｆ／Ｃｌ值（１４６－３０３），高Ｒｂ／Ｓｒ值（５－１２２），高的不相容元素丰度（Ｓｎ＝３１３×１０－６－１０４２×１０－６）而相容元素丰度较低（Ｓｒ＝１０×１０－６－２８×１０－６），稀土配分呈海鸥型，成因上应是Ｓ型含锡斑岩。     

西岭锡矿床岩体含矿性与成因类型的研究

作者研究了西岭锡矿床自碎次花岗斑岩岩体的地质特征、含矿性、成因类型。认为自碎次花岗斑岩具有隐爆特征。岩浆来自上地幔至下部地壳物质的部分熔化，属于徐克勤教授所划分的过渡型地壳同熔型花岗岩类。岩体中锡含量是一般花岗岩类的10—22倍，并具有含锡岩体的有利岩石化学条件，铅同位素比值证实了成矿与成岩的紧密联系。锡矿床与自碎次花岗斑岩是同原的，应为斑岩型锡矿床。接触带和爆破角砾岩带是成矿的有利构造部位。     

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.     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

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).     

NONMETALS DEPOSITS

正20141520 Bo Ying(Key Laboratory of Metallogeny and Mineral Assessment,MLR,Beijing 100037,China);Liu Chenglin Saline Spring Hydrochemical Characteristics and Indicators for Potassium Exploration in Southwestern and Northern Tarim Basin,Xinjiang(Acta Geoscientica Sinica,ISSN1006-3021,CN11-3474/P,34(5),2013,p.594-602,5 illus.,3 tables,28 refs.)     

MATHEMATICAL GEOLOGY

正20141243Chen Ge(Hangzhou Research Institute of Petroleum Geology,PetroChina,Hangzhou 310023,China);Si Chunsong Study on Sedimentary Numerical Simulation Method of Fan Delta Sand Body(Journal of Geology,     

PROSPECTING EXPLORATION

正20142599Chen Sanming(Guangxi Key Laboratory of Concealed Deposits Exploration,Guilin University of Technology,Guilin541004,China);He Yuzhou Block Model and Reserves Estimation of Panzhihua Iron Deposit Based on 3D Geological Modeling(Journal of Guilin University of Technology,ISSN1674-9057,CN45-1375/N,33(4),2013,p.610-615,9illus.,1table,15refs.)     

STRUCTURAL GEOLOGY

正20140594 Bai Daoyuan(Hunan Institute of Geology Survey,Changsha 410016,China);Zhong Xiang Faults in the Jingzhou Basin and Their Tectonic Settings(Geotectonica et Metallogenia,ISSN1001-1552,CN44-1595/P,37(2),2013,p.173-183,6illus.,59refs.)Key words:basin evolution,tectonic setting,South China In the Upper Paleozoic and Jurassic se-     

STRUCTURAL GEOLOGY

正20141912Cao Hui(State Key Laboratory for Continental Tectonics and Dynamics,Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China)Gravitational Collapse and Folding during Orogenesis:A Comparative Study of FIA Trends and Fold Axial Plane Traces(Geology in China,ISSN1000-3657,CN11-1167/P,40(6),2013,p.1818-1828,9illus.,35refs.,with     

PALEOZOOLOGY

正20141609 Chen Guiying(College of Earth Sciences,Guilin University of Technology,Guilin 541004,China);Han Nairen New Materials of Stylophora from the Upper Cambrian of the Jingxi Area,Guangxi,South China(Acta Palaeontologica Sinica,ISSN0001-6616,CN32-1188Q,52(3),2013,p.288-293,2 illus.,12 refs.)Key words:Stylophora,Guangxi     

GEOPHYSICS

正20140634 Cao Lingmin(Key Laboratory of Marine Geology and Environment,Institute of Oceanology,Chinese Academy of Sciences,Qingdao 266071,China);Xu Yi Finite Difference Tomography of the Crustal Velocity Structure in Tengchong,Yunnan Province(Chinese Journal of Geophysics,ISSN0001-5733,CN11-2074/P,56(4),2013,p.1159-1167,6illus.,35refs.,with English abstract)