三烷基氧膦纤维素富集－感耦等离子体质谱法测定地质样品中钨钼锡

研究了三烷基氧膦（ＴＲＰＯ）纤维素色层分离富集痕量元素Ｗ、Ｍｏ和Ｓｎ的条件，根据吸附与洗脱实验中的现象初步探讨了ＴＲＰＯ与Ｗ、Ｍｏ、Ｓｎ的反应机理。以Ｒｈ为内标采用感耦等离子体质谱法进行测定。标准加入回收率为９８％～１０１％；Ｗ、Ｍｏ、Ｓｎ的测定下限分别为０．０２、０．０１、０．１μｈ／ｇ；重复取样测定的ＲＳＤ（ｎ＝１５）均小于１０％。经对地球化学标准物质分析，结果与推荐值相符。     

三烷基氧膦纤维素富集—感耦等离子体质谱法测定地质样品中钨钼锡

研究了三烷基氧膦纤维素色层分离富集痕量元素Ｗ、Ｍｏ和Ｓｎ的条件，根据吸附与洗脱实验中的现象初步探讨了ＴＲＰＯ与Ｗ、Ｍｏ，Ｓｎ的反应机理。以Ｒｈ为内标采用感耦等离子体质谱法进行测定，标准加入回收率为９８％－１０１％；Ｗ、Ｍｏ，Ｓｎ的测定下限分别为０．０２、０．０１、０．１μｇ／ｇ；重复取样测定的ＲＳＤ均小于１０％。经对地球化学标准物质分析，结果与推荐值相符。     

勘查地球化学找矿中重要指示元素的野外快速分析法（二）银的分析方法

发展了一种可在野外快速测定０．０１０—５０μｇ／ｇ银量的新方法。此法由两个各自独立而又配套的部分组成。一是直接测定０．２５—５０μｇ／ｇ银量的Ａｇ－ＴＭＫ－ＳＤＳ三元络合物光导比色测定法；二是测定０．０１０—０．２５μｇ／ｇ银量的巯基棉分离富集微珠析出比色法。可在同一份试液中依次完成。前者检出限为０．００６μｇ／ｍｌ（Ｋ＝３）；测定铜、铅和锌矿石标样ＧＳＯ－Ｃｕ－１（含银３．８７μｇ／ｇ）、ＧＳＯ－Ｐｈ－１（含银１４．７μｇ／ｇ）和ＧＳＯ－Ｚｎ－１（含银１３．５μｇ／ｇ）中的银，ＲＤＳ（ｎ＝１１）分别为１．６％、３．７％和３．４％；后法可检出５ｎｇ／ｇ银；测定地球化学标样ＧＳＤ－３（含银０．５９μｇ／ｇ）中的银，ＲＳＤ（ｎ＝１１）为６．ｔ％。方法较为简便、快速、准确和灵敏。用光导比色计测定，结果准确度、精度均有较大改善，且与室内原子吸收法相当。故所定方法具有广阔的应用前景。     

有机螯合沉淀剂富集－感耦等离子体质谱法测定地球化学样品中痕量元素

报道了用吡咯烷二硫代氨基甲酸铵（ＡＰＤＣ）有机螯合沉淀剂沉淀富集后，等离子体质谱法测定地球化学样品中２６个痕量元素的方法。研究了ＡＰＤＣ定量沉淀待测金属离子的条件，分别在ｐＨ２和ｐＨ７时使２６个元素富集，回收率在９４％～１０５％；样品测定下限为０．０１～０．４μｇ／ｇ；方法的ＲＳＤ（ｎ＝１０）为３％～１３％。经几种地球化学标准物质验证，结果与推荐值相符。     

在线液 - 液萃取微型万用分相器的设计和应用 Ⅲ.流动注射液液萃取电感耦合等离子体原子发射光谱测定矿石中钼和钨

设计的在线液液萃取分相器及相应流路系统与电感耦合等离子体原子发射光谱联用具有良好的分析性能。用于测定地质样品中的Ｍｏ和Ｗ，检出限（３σ）分别为３６μｇ／Ｌ和２８μｇ／Ｌ，两元素在０～２．０ｍｇ／Ｌ有良好的线性。对于１ｍｇ／Ｌ的Ｍｏ和Ｗ的测定，ＲＳＤ（ｎ＝７）分别为４０％和２７％，测定速率为２５～３０／ｈ。     

催化还原褪色光度法测定痕量锡

痕量锡在０．０４ｍｏｌ／ＬＨ３ＰＯ４介质中对ＮａＨ２ＰＯ２还原罗丹明Ｂ褪色反应有催化作用,催化程度与Ｓｎ量、温度和加热时间线性相关。基于此,建立了痕量锡的动力学光度分析方法。方法检出限为０．０３４μｇ／Ｌ,线性范围为０～２０μｇ／Ｌ,结合磷酸三丁酯色谱分离,实现了地质样品中痕量Ｓｎ的测定。方法经国家地质标准物质分析验证,结果与标准值相符。对于ｗ（Ｓｎ）为１０－６水平的试样其ＲＳＤ（ｎ＝６）＜６．５％。     

感耦等离子体发射光谱法测定纯氧化镧中稀土和非稀土杂质

研究了用感耦等离子体发射光谱（ＩＣＰ－ＡＥＳ）测定纯氧化镧中Ｃｅ，Ｐｒ，Ｎｄ，Ｓｍ，Ｙ，Ｆｅ，Ａｌ，Ｃａ，Ｍｇ和Ｓｉ１０个杂质元素的方法。考察了基体镧的光谱干扰，共存元素间光谱干扰及校正方法，方法检出限为０．０００５－０．０３９μｇ／ｍｌ；标准加入量１μｇ／ｍｌ时，回收率为９５％－１０６％；１０μｇ／ｍｌ的标准溶液，测定１０次，ＲＳＤ为０．２４％－１．０１％。方法简单，快速，不震分离富集，适用于氧     

碱性体系在线氢化物发生原子荧光光谱法测定铜矿石中痕量砷锑铋

建立了一个碱性体系在线氢化物发生原子荧光光谱法测定铜矿石中痕量砷、锑、铋的分析方法。设计了在线氢化物发生流路及操作程序。选择了碱性体系氢化物发生的各项最佳条件,避免了Ｃｕ、Ｆｅ等大量基体元素的干扰。方法检出限为Ａｓ０．６μｇ／Ｌ,Ｓｂ０．４μｇ／Ｌ,Ｂｉ０．９μｇ／Ｌ,Ａｓ、Ｓｂ、Ｂｉ的工作曲线均在０～４００μｇ／Ｌ内呈良好的线性,经铜矿石国家一级标准物质分析验证,砷锑铋的测定结果与标准值吻合,相对标准偏差（ＲＳＤ,ｎ＝５）在４．２％～８．８％。     

流动注射－原子荧光法测定岩矿中痕量硒和碲

讨论了题示方法中的干扰，指出在一般岩石中多数共存元素不干扰Ｓｅ和Ｔｅ的测定；Ｃｕ的干扰可在含Ｆｅ￣３＋、ＨＣｌＯ＿４的介质中加入邻菲罗啉沉淀预先消除；Ｐｂ的干扰可在Ｈ＿２ＳＯ＿４分解试样时形成ＰｂＳＯ＿４消除；试液保存在塑料容器中可免除残留Ｆ￣－的影响。所拟方法每次采样１ｍＬ，每小时测定９０次。对Ｓｅ和Ｔｅ的检出限均为０．２μｇ／Ｌ，测定浓度为１０μｇ／Ｌ的Ｓｅ和Ｔｅ，其ＲＳＤ（ｎ＝１２）分别为３．７％和４．３％。经标样分析验证，方法可行。     

电流氧化溶出计时电位法测定地质物料中痕量铟

经萃取分离富集后，在ｐＨ２．６的苯二甲酸氢钾ＨＣｌ介质中，用电流氧化溶出计时电位法测定地质物料中痕量Ｉｎ。方法检出限为０．０１μｇ／ｇ，标样中Ｉｎ的含量为０．１０μｇ／ｇ时的方法精密度（ＲＳＤ，ｎ＝１１）为８．７６％，加标回收率为９８％～１０５％。应用此方法测定了国家一级地球化学标准参考物质（ＧＳＲ１～６，ＧＳＳ１～８，ＧＳＤ９～１２）中的痕量Ｉｎ，获得了较为满意的测定结果     

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