多年冻土区短桩架空通风基础房屋的模型试验研究

本介绍了工程建筑物基础和多年冻土地基整体的相似模型试验，试验结果与实体取得良好的一致。从动态过程肯定了持力层为含土冰层时，冻土允许承载力Ｒｆ的可靠性，同时，明确了可依据冻土层年平均地温Ｔｃｐ＝－２．５℃时，持力层（平均）地温Ｔ＝－０．５℃，允许承载力Ｒｆ＝０．１ＭＰａ，只能建一层平房，当Ｔｃｐ＝－４．０℃时，Ｔ＝－１．０－１．２℃，Ｒｆ＝０．１５－０．１７ＭＰａ，可有条件地建二层楼房。     

微分溶出计时电位法测定地质物料中微量铜

在０．２ｍｏｌ／Ｌ ＨＣｌ－１．０ｍｏｌ／ＬＮａＣｌ－０．１５ｍｏｌ／Ｌ抗坏血酸介质中，用电流氧化微分溶出计时电位法直接测定地质物料中微量Ｃｕ。富集电位－０．５５Ｖ，时间２０～４０ｓ；电极转速２５００ｒ／ｍｉｎ；溶出电流０．２～１μＡ；记录电位范围－０．２～－１．２０Ｖ；清洗电位－０．１０Ｖ，时间１０ｓ。方法检出限０．２μｇ／ｇ，线性范围２～４００ｎｇ／ｍｌ，精密度（ＲＳＤ，ｎ＝１１，４．１μｇ／     

电解富集光谱法测定样品中的微量金

本文先以恒电位电解法在ｃ（Ｋｃｌ）＝０．ｌｍ０ｌ／Ｌ，ｃ（Ｈｃｌ）＝０．２ｍｏｌ／Ｌ介质液中，将微量金电解富集在特制石墨电极上，再用背景为内标的原子发射光谱法对金进行测定。本分析方法的回收率为９７．１－１０６％，变动系数为８．５５％，相对误差为－１．９６一２．２１％。操作简便快速，测定结果准确可靠     

山东蓬莱,临朐新生代碱性玄武岩的钕,锶同位素组成

本文报道了鲁东和鲁西新生代碱性玄武岩１３个样品的Ｎｄ，Ｓｒ同位素组成，１４３Ｎｄ／１４４Ｎｄ＝０．５１２９６７－０．５１２７４４，８７Ｓｒ／８６Ｓｒ＝０．７０３４９－０．７０４５０。它们在地质剖面上呈现规律性变化，可能与其地幔源区同位素组成的层状分带有关。鲁西地幔源区具有较鲁东更加亏损的组份。两地地幔源区在演化中都曾发生过地幔交代（或富集）作用，根据玄武岩Ｎｄ同位素模式年龄估计地幔交代作用发生的时     

尖晶石CoAl2O4中阳离子分布的温度依赖性

本通过Ｘ射线粉末衍射数据的Ｒｉｅｔｖｅｌｄ结构精化法，确定了经过７５０－１２００℃淬火的合成尖晶石ＣｏＡｌ２Ｏ４样品的阳离子分布。其反生参数ｘ随温度７５０－１２００℃相应地从０．１１平滑增加到０．２５（±０．００５），并可用带有ａｃｏ－Ａｌ＝４５．３＋０．５，β＝－１８．３±１．２ｋＪ／ｍｏｌ的一般热力学模型描述。     

桐柏山花岗岩类Pb、O、Sr同位素特征

本文首次对桐柏山花岗岩类的Ｐｂ、Ｏ、Ｓｒ同位素进行研究。其长石铅同位素组成是２０４Ｐｂ＝１．４００（１．３８９－１．４１１），２０６Ｐｂ／２０４Ｐｂ＝１７．１４８（１６．８４７－１７．４３８），２０７Ｐｂ／２０４Ｐｂ＝１５．４２８（１５．３７８－１５．４８４），２０８Ｐｂ／２０４Ｐｂ＝３７．８８６（３７．５８３－３８．２９６）。与邻区花岗岩类相比，基本相当于胶东地区。全岩矿δ１８Ｏ＝８．４８（７．４９－９．３７）。８７Ｓｒ／８６Ｓｒ（ｉ）＝０．７０９０（０．７０６４－０．７１３８）。这些数据结合岩石矿物特征表明，本区花岗岩类的成因类型属Ⅰ型或同熔型。铅同位素组成揭示本区大地构造可能归属华北地台。     

D401螯合树脂在盐酸介质中对铂,钯的吸附性能及分离研究

本文研究了在ＨＣｌ介质中，Ｄ４０１螯合树脂对铂，钯的吸附性能。实验表明，在ｐＨ＝２－４范围内，树脂对钯有良好的吸附性能，饱和吸附量７０．５ｍｇＰｄ／ｇ－Ｒ。ｐＨ≥４时对铂不吸附，钯的负载柱可用「０．１ｍｏｌＴｕ＋０．５ｍｏｌｈｃＬ」／Ｌ混合液定量洗脱，洗脱率为９９．２％，     

5‘—硝基水杨基荧光酮与锆显色反应及其应用

在０．０８￣０．１０ｍｏｌ／Ｌ ＨＣｌ介质中，溴化十六烷基三甲铵（ＣＴＭＡＢ）存在下，Ｚｒ（Ⅳ）与５＇－硝基水杨基荧光酮（５＇－ＮＳＦ）发生显色反应，形成１：４的桔红色络合物，λｍａｘ＝５４０ｎｍ，ε为１．４６×１０＾５Ｌ·ｍｏｌ＾－１·ｃｍ＾－１，Ｚｒ（Ⅳ）含量在０￣０．５ｍｇ／Ｌ符合比尔定律。方法用于氧化铝及陶瓷釉料中锆的测定，结果与ＩＣＰ－ＡＥＳ法相符，ＲＳＤ（ｎ＝５）在１．３％￣３．７％。     

新疆库鲁克塔格斜长角闪岩岩石地球化学特征及其地质意义

库鲁克塔格地区位于塔里木盆地东北缘,在片麻岩中出露较多斜长角闪岩类包体,其走向大致与片麻理的方向一致。通过岩石化学、稀土元素地球化学和Ｓｍ－Ｎｄ同位素研究,确定该斜长角闪岩的原岩为基性火山岩,并形成于两种构造环境。北部托格地区斜长角闪岩球粒陨石标准化配分曲线呈近平坦型〔（Ｌａ／Ｙｂ）Ｎ＝０．６６—４．２３,一般在０．９１—１．６９之间;δＥｕ＝０．８２—１．１５,平均值为１．０２〕,与洋脊玄武岩类非常相似;南部阔克苏地区斜长角闪岩的球粒陨石标准化配分曲线显示出ＬＲＥＥ明显富集〔（Ｌａ／Ｙｂ）Ｎ＝２．７１—１０．８４;δＥｕ＝０．８１—１．０７,平均值为０．９５〕,具有类似现代岛弧或弧后盆地火山岩特有的稀土元素组成特征。它们的原岩岩浆来自长期亏损的地幔,基本未受到大陆地壳物质混染。     

铱——碘化钾——丁基罗丹明B的显色反应及分光光度法测定铱

在ＰＨ３．４时，铱能与碘化钾、丁基罗丹明Ｂ型成紫色络合物，其组成比Ｉｒ４＋：Ｉ＾－：ＢＲｈＢ＾＋＝１：６：２，最大吸收波长为６１０ｎｍ，ε＝１．３６×１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１，铱在（０－８）μｇ／２５ｍｌ范围时服从比尔定律，采用阳离子交换树脂分离大量基体离子，可对冶金物料中微量铱进行测定。     

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