中国斑岩矿床成矿系列的几点认识

根据中外地质学家关于斑岩矿床的成矿理论，概念和矿床模型，论述了中国斑岩矿床分布的时空特点，成岩成矿系列，矿床基本类型和区域组成模式，区域和矿床成矿特征，是一份研究，寻找斑岩型矿床可遵循的资料。     

矿床地球化学模型的建立及其找矿效果探讨—以团结沟金矿为例

当今矿床学研究中的热点问题之一是矿床模型研究。矿床建模的理论与方法，矿床模型的定量化是目前矿床模型研究中亟待解决和完善的问题。从典型矿床入手，首先建立易于实现定理化的矿床地球化学模型，将有助于打破矿床模型研究的僵局。团结沟金矿床地球化学模型的建立是一个初步尝试。矿床地球化学模型能迅速转化为找矿模型，为找矿预测提供简捷有效的途径。     

元古宙铁氧化物（Cu—U—Au—REE）矿床

铁氧化物矿床包括南澳大利亚奥林匹克坝矿床，瑞典的基鲁纳矿床，中国内蒙古的白云鄂博矿，美国密苏里东南部的铁氧化物矿床等。据围岩性质，该类矿床可分为以火成岩为容矿岩的铁氧化物矿床和以沉积岩为容夺两亚类。这些矿床有许多共性，也有它们自己固有特征。 类型矿床一般分布在中元古代克拉通苛大陆边缘环境中，可能与裂谷有成因连系。     

中国主要矿床数据库及其应用

新近完成的“中国主要矿床数据库”利用目前最优秀的高级关系数据库管理系统软件Ｆｏｘｐｒｏ２．５ｆｏｒ ｗｉｎｄｏｗｓ，以１９９３的底全国矿产储量统计表为基础，包含４０种主要常见矿产，共计大，中型矿床１９０２处，小型矿床３３８４处。数据库中不但载矿床的产地，坐标，储量，品位等矿床基本数据，而且还记录了矿床的类型，成因，成矿时代，围岩时代等矿床地质信息。     

中国玉石矿床类型

中国玉石种类多，分布广，质量优。主要矿床类型有：岩浆岩型的梅花玉，桃花玉，水草翟玉，羊肝石等矿床；伟晶岩型的丁香紫玉、芙蓉石等矿床；变质岩型又分为矽卡岩型的和田玉，京粉翠矿床；后期热液交代型的独山玉、岫玉矿床；火山期后热液交代型的叶蜡石类矿床、石英质玉矿床、虎晴石矿床；动力变质型的优溪玉矿床；区域变质型的砚石矿床；沉积型的菊花石、百鹤石、汉白玉、密蜡黄玉、墨玉等矿床；风化淋滤型的绿松石、孔雀石、玛     

白钨矿床的地质特下及在吉林省的找矿方向

独立的白钨矿矿床和以白钨矿为主要组分的白钨矿矿床是一类重要的矿床。本文研究了这类矿床的实例，总结了这类矿床的成矿特征，提出了吉林省这类矿床的找矿方向。     

新疆及周边国家、地区超大型矿床成矿特征和远景分析

20世纪70年代以来，由于储量特别巨大的超大规模矿床在各国和世界经济中起着越来越重要的作用，对这类矿床的勘查和研究越来越引起重视。笔者在对新疆及周边国家、地区超大型矿床研究基础上，论述了超大型矿床的时空分布特征，讨论了超大型矿床类型及其选择性，分析了成矿大地构造环境，并论证了超大型矿床资源潜力，中亚超大型矿床的若干特点。     

浙东南地区次生石英岩型红柱石成矿地质特征及矿床成因初探

浙东南地区次生石英岩型红柱石矿床为一种新的矿产类型，本简要地总结该类矿床的地质特征和矿床特征，探讨了成矿地质条件和矿床成因，认为该类型红柱石矿床是由火山岩经火山热液蚀变形成次生石英岩，然后经热接触变质作用，致使部分铝硅酸盐矿物脱水分解形成红柱石矿床。     

在特罗多斯蛇绿岩内和在大西洋中脊上的富金海底铁帽

塞浦路斯特罗多斯晚白垩世蛇绿岩体中的块状硫化物矿床具有现代海洋扩张中央著名的硫化物矿床，沿特罗多斯杂岩体北部边缘分布的几个硫化物矿床与古海底扩张有关的构造地堑有空间上的关系，尽管矿床的构造背景类以于超俯冲带而不是洋中脊，塞浦路斯块状硫化物矿床的总成分和矿化类型相当于现代洋中脊正在形成的“黑烟卤”矿床。此矿床以含大量的黄铁矿为特征，此外，还有黄铜矿，少量的闪锌矿和白铁矿，磁黄铁矿，该类矿床的黄金产理     

我国与寻找超大型矿床有关的基础研究进展

我国于1992年将超大型矿床基础性研究列入国家基础研究重大项目，已取得如下成果：确定了超大型矿床的定义和分类原则，发现了超大型矿床在矿化类型上的选择性和局限性，我国超大型矿床主要分布于克拉通边缘，铅同位素的地球化学急变带，地壳厚度急变带，碳酸岩系向碎屑岩系过渡带是超大型矿床产出的有利宏观背景；立足于寻找超大型矿床，提出了6个新的成矿域；确定了我国东部喜山期和南方晋宁期对金属成矿的重要意义。此外，还对邻国超大型矿床成矿带和成矿类型向我国延伸的可能性以及超大型矿床与矿床密集区时空展布及成因上的复杂性进行了研究，提出了独立银矿床及成矿带概念，对我国当前开展的超大型矿床基础研究作了概要介绍，简要评述了当今国际上超大型矿床研究趋势。     

黑龙江七星河含煤盆地古近纪-新近纪沉积相及层序地层特征

黑龙江省东部七星河盆地是一新生代聚煤盆地,其含煤地层为古近系宝泉岭组、新近系富锦组。宝泉岭组由各级砂岩、泥岩、炭质泥岩以及褐煤组成,发育滨浅湖相、深-半深湖相、三角洲平原相,属于湖泊沉积体系、三角洲沉积体系。富锦组主要由泥岩、粉砂岩、中砂岩、含砾粗砂岩及煤层、炭质泥岩、硅藻岩组成,发育滨浅湖相、扇三角洲平原相,分别属于湖泊沉积体系和扇三角洲沉积体系。层序SI相当于宝泉岭组,发育低位体系域、湖侵体系域和高位体系域,煤层主要发育高位体系域中后期,成煤环境以滨浅湖淤积沼泽为主。层序SII相当于富锦组,主要发育湖侵体系域、高位体系域,局部地区发育低位体系域,煤层亦主要发育高位体系域中后期,成煤环境以扇三角洲淤积沼泽和滨浅湖淤积沼泽为主。层序SI、SII的高位体系域中后期,盆地基底沉降速率和物源供给处于相对平衡状态,主要发育了扇三角洲淤积沼泽、滨浅湖和滨浅湖淤积沼泽环境,发育可采煤层。     

The terrestrial fauna of the Late Triassic Pant-y-ffynnon Quarry fissures,South Wales,UK and a new species of Clevosaurus (Lepidosauria: Rhynchocephalia)

Pant-y-ffynnon Quarry in South Wales yielded a rich cache of fossils in the early 1950s, including articulated specimens of new species (the small sauropodomorph dinosaur Pantydraco caducus and the crocodylomorph Terrestrisuchus gracilis), but no substantial study of the wider fauna of the Pant-y-ffynnon fissure systems has been published. Here, our overview of existing specimens, a few described but mostly undescribed, as well as freshly processed material, provides a comprehensive picture of the Pant-y-ffynnon palaeo-island of the Late Triassic. This was an island with a relatively impoverished fauna dominated by small clevosaurs (rhynchocephalians), including a new species, Clevosaurus cambrica, described here from a partially articulated specimen and isolated bones. The new species has a dental morphology that is intermediate between the Late Triassic Clevosaurus hudsoni, from Cromhall Quarry to the east, and the younger C. convallis from Pant Quarry to the west, suggesting adaptive radiation of clevosaurs in the palaeo-archipelago. The larger reptiles on the palaeo-island do not exceed 1.5?m in length, including a small carnivorous crocodylomorph, Terrestrisuchus, and a possible example of insular dwarfism in the basal dinosaur Pantydraco.     

The effect of water on accessory phase solubility in subaluminous and peralkaline granitic melts

The solubilities of columbite, tantalite, wolframite, rutile, zircon and hafnon were determined as a function of the water contents in peralkaline and subaluminous granite melts. All experiments were conducted at 1035 °C and 2 kbar and the water contents of the melts ranged from nominally dry to approximately 6 wt.% H₂O. Accessory phase solubilities are not affected by the water content of the peralkaline melt. By contrast, solubilities are affected by the water content of the subaluminous melt, where the solubilities of all the accessory phases examined increase with the water content of the melt, up to 2 wt.% H₂O. At higher water contents, solubilities are nearly constant. It can be concluded that water is not an important control of accessory phase solubility, although the water content will affect diffusivities of components in the melt, thus whether or not accessory phases will be present as restite material. The solubility behaviour in the subaluminous and peralkaline melts supports previous spectroscopic studies, which have observed differences in the coordination of high field strength elements in dry vs. wet subaluminous granitic glasses, but not for peralkaline granitic glasses. Lastly, the fact that wolframite solubility increases with increasing water content in the subaluminous melt suggests that tungsten dissolved as a hexavalent species.     

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.)