闽西─赣南早古生代造山带的年代学和岩石地球化学研究

闽西─赣南早古生代造山带的年代学和岩石地球化学研究任胜利，李继亮，周新华（中国科学院地质研究所，北京１０００２９）关键词早古生代造山带，年代学，岩石地球化学，闽西─赣南我国东南部的地质构造复杂，岩浆活动频繁，矿产资源丰富，各类地质问题长期以来为中外地...     

辽西元古宙旧庙基性杂岩的演化及地球动力学意义

辽西元古宙旧庙基性杂岩的演化及地球动力学意义孙景贵（长春地质学院，长春１３００６１）收稿日期：１９９６－８－１６修改稿：１９９６－１２－１７作者简介：孙景贵男１９６１年生博士生矿床学关键词基性杂岩岩浆演化元古代辽西前寒武纪地质研究已在稳定克拉通地块中...     

应用于矿产勘查的地下纳米物质

应用于矿产勘查的地下纳米物质刘应汉任天祥汪明启（地质矿产部物化探所，河北廊坊０６５０００））关键词纳米物质地球化学测量矿产勘查收稿日期：１９９６－１２－２４修改稿：１９９７－３－１７第一作者简介：刘应汉男１９６５年生工程师勘查地球化学诞生于９０年代的...     

社会地质学—一门新兴的交叉学科

社会地质学──一门新兴的交叉学科赵逊，银剑钊，杨岳清（中国地质科学院北京１０００３７）（地质矿产部矿床地质研究所北京１０００３７）编者按：举世瞩目的第３０届国际地质大会将于１９９６年８月４—１４日在北京举行。这是几代中国地质学家期盼的百年不遇的世纪盛...     

超临界流体在花岗岩成岩成矿过程中的作用——以香花岭花岗岩型铌钽矿床为例

超临界流体在花岗岩成岩成矿过程中的作用——以香花岭花岗岩型铌钽矿床为例邱瑞照杜绍华彭松柏（地矿部宜昌地质矿产研究所，湖北宜昌４４３００３）关键词花岗岩型铌钽矿床超临界流体香花岭收稿日期：１９９６－１２－３１修改稿：１９９７－３－１０第一作者简介：邱瑞...     

铅同位素方法应用于化探找矿评价

铅同位素方法应用于化探找矿评价常向阳朱炳泉（中国科学院广州地球化学研究所，广州５１０６４０）关键词铅同位素打靶系统剖面化探收稿日期：１９９６－１２－１７第一作者简介：常向阳男１９６７年生助理研究员同位素地球化学＊国家科委攀登计划Ｂ项资助近年来，铅同位...     

中国大陆科学钻探筹备工作大事记（续3）

中国大陆科学钻探筹备工作人事记（续３）中国大陆科学钻探（ＣＳＤＣ）筹备工作，近年来获得迅速进展。·先后召开了三次中国大陆科学钻探选址研讨会。第一次；１９９２年４月，北京；第二次：１９９３年５月，北京；第三次：１９９６年１月，合肥。·中国地质超深钻探（...     

IGC－30 北京 1996

ＩＧＣ－３０北京１９９６（２）大会的学术活动计划由主办国的组织委员会与国内外学术组织协商，精心制订。每届大会的学术内容涉及地学的各个领域，突出当时地学的前沿和热点，结合与世界发展密切关联的地学问题和主办国的独特地质特征，不同届的会议又各有侧重，每届大...     

在第30届国际地质大会上的开幕词

在第３０届国际地质大会上的开幕词中华人民共和国国务院总理李鹏（１９９６年８月４日北京）女士们、先生们、朋友们：我代表中国政府和中国人民对第３０届国际地质大会在北京召开，表示衷心的祝贺！对前来参加这次国际地学界空前盛会的各国和各地区的地质学家，表示热烈...     

地下水－地表水交错带

地下水－地表水交错带刘苏峡（中国科学院地理研究所北京１００１０１）关键词交错带，地下水－地表水交错带，物质流，功能，负效应，管理１交错带与地下水－地表水交错带地下水－地表水交错带（ｇｒｏｕｎｄｗａｔｅｒ－ｓｕｒｆａｃｅｗａｔｅｒｅｃｏｔｏｎｅ）是地表...     

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.)     

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