铁（Ⅲ）—对硝基苯基荧光酮—CTMAB—吐温—60多元配合物显色反应研…

Ｆｅ－对硝基苯基荧光酮－ＣＴＭＡＢ在ｐＨ１０．０－１１．２的硼砂－ＮａＯＨ缓冲溶液中形成蓝色多元配合物，其组成为Ｆｅ：ｐ－ＮＰＦ：ＣＴＭＡＢ＝１：２：４。在吐温－６０下，λｍａｘ为１６０ｎｍ，ε６１０＝１．１２×１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１，Ｆｅ含量在０－０．２μｇ／ｍｌ范围内符合比耳定律。     

2—[2—（5—甲基苯并噻唑）偶氮]—5—二乙氨基苯甲酸的离解平衡及其与？…

研究了新显色剂２－「２－（５－甲基苯并噻唑）偶氮」－５－二乙氨基苯甲酸（５－Ｍｅ－ＢＴＡＥＢ）的离解平衡及与Ｆｅ＾２＋形成配合物的条件。在十二烷基硫酸钠的存在下,５－Ｍｅ－ＢＴＡＥＢ与Ｆｅ＾２＋形成稳定的蓝紫色２：１配合物,其最大吸收波长为６４０ｎｍ,表观摩尔吸光系数为１．０３＊１０＾５Ｌ．ｍｏｌ＾－１．ｃｍ＾－１。Ｆｅ＾２＋的质量浓度在０－４８０μｇ／Ｌ时服比尔定律。方法用于部级铝合金标样中微量     

湖南黄沙坪铅锌矿床内带铁闪锌矿铁占位机制的探讨

对黄沙坪铅锌矿床内带铁闪锌矿的研究表明,其形成温度为３００℃±压力大致为１０＾７Ｐａ,成矿溶液为中偏酸性,硫逸度较高,还原性较强,成矿溶液中Ｆｅ和Ｚｎ的主要配合物有：ＦｅＣｌ＾＋,ＦｅＯＨ＾＋,ＦｅＣｌ＾０,Ｚｎ（ＨＳ）＾０２,ＺｎＣｌ＾＋,ＺｎＣｌ＾０２,Ｆｅ＾２＋等,Ｆｅ＾２＋主要是铁闪锌矿结晶过程中进入八面体位置的,这是ＺｎＳ与ＦｅＳ之间构成有限固溶体的根本原因。     

对用Fe^3＋／Fe^2＋探讨庐山地区第四纪古温度的讨论

本文认为用Ｆｅ＾３＋／Ｆｅ＾２＋值推算庐山地区第四纪古温度是可行的，但认为在推算方法上必须严谨合理，文中论证了用Ｆｅ２Ｏ３／ＦｅＯ值代替Ｆｅ＾３＋／Ｆｅ＾２＋值推算古温度，且用少量样品的实验分析结果来划分庐山地区第四纪冰期和间冰期地层是欠妥的，其计算结果误差达０．４１－４．３５。据笔者采用容量法对庐山大校场部面１０个样品Ｆｅ＾３＋和Ｆｅ＾２＋含量的测试，发现这些样品反映的第四纪古温度值未有低达０℃     

榴辉岩中铁铝榴石的测定方法研究

对国内主要矿区铁铝石榴子石纯矿物中铁的价态规律进行了研究。证明其所含Ｆｅ均以Ｆｅ＾２＋为主，其质量分数在８３－９４，并将Ｆｅ＾２＋这特征性成分用于某地榴辉岩中铁铝榴石的间接测定，获得结果与焙烧磁化－磁选法一致且精度好，较磁化法简便，快速。     

乙酰丙酮—铁（Ⅲ）树脂相分光光度法测定水中痕量铁

研究提出了利用薄层树脂相通过光度法测定痕量Ｆｅ的新方法。Ｆｅ＾３＋在ｐＨ１．３０－１．５５的ＨＣｌ介质中与乙酰丙酮形成稳定的有色络合物，将其富集在Ｈ＾＋型（７３２＾＃）阳离子交换树脂上，将着色的树脂制成薄层，直接测定。本法操作简便，装皿容易，选择性好，适用于天然水中痕量Ｆｅ的测定。     

大兴安岭中南段花岗岩中黑云母矿物学地球化学特征及成因意义

大兴安岭中南段花岗岩中黑云母的矿物学和地球化学特征研究表明,海西晚期花岗岩体黑云母Ｍｇ高Ｆｅ＾２＋低,Ｍｇ原子数〉０．６,Ｆｅ＾２＋原子数〈１．１,而燕山期γ＾２－２５岩体黑云母Ｍｇ原子数〈０．６,Ｆｅ＾２＋原子数〉１．１,燕山晚期γ＾３－１５岩体黑云母Ｍｇ原子数〈０．４,Ｆｅ＾２＋原子数〉１．９,本区黑云母成分特征介于华南二成因系列之间,兼具二系列的某些特点,表明本区花岗岩的壳幔混源特点,本区南     

氢化物—原子荧光法测定岩石中痕量硒的干扰及消除

用ＨＦ－ＨＣｌＯ４－ＨＮＯ３混合酸分解样品，采用Ｆｅ＾３＋作释放剂，研究了不同量的Ｆｅ＾３＋与ＨＣｌ酸度对Ｓｅ荧光强度的影响和干扰离子消除的效果，以及Ｆｅ＾３＋存在Ｔｅ存在下对Ｓｅ测定的影响。方法的检出限为０．０１μｇ／ｇ．样品中Ｓｅ量为０．１μｇ／ｇ的相对标准偏差（ｎ＝１１）是５．４％。用于岩石标样中痕量Ｓｅ的测定，结果较好。     

古全球变化与非等时韵律沉积及前寒武纪条带状铁矿建造形成的终止

前寒武纪各种地质记录表明了太古代－元古代早期古全球天南环境具有显著的陆少洋多和大气富ＣＯ２，盆Ｏ２的特征。ＢＩＦｓ大气－海洋系统中Ｆｅ＾２＋的氧化是铁质发生沉淀的一个重要过程，在前寒武纪早期缺Ｏ２的环境，生物－无氧氧化和日光－紫外线为主的宇宙射线光致氧化作用产生的直接非生物－无氧氧化过程，在前寒武幻早期缺Ｏ２环境对Ｆｅ＾２＋的氧化可能起着重要和主导的作用。     

北方地区酸雨对地下水硬度形成的影响机制分析

由酸雨对包气带土样的淋滤试验和浸泡试验资料表明，在岩－水相互作用的初期，硬度主要来自土中易溶盐的溶解和Ｈ＾＋，Ｎａ＾＋对土颗粒表面Ｃａ＾２＋，Ｍｇ＾２＋，Ｆｅ＾２＋等的交换；在后期，硬度主要来自土中碳酸盐，铝硅酸盐的风化水解。酸雨中的酸度与土壤溶液中的碱度的中和过程，即是水中硬度的形成过程，酸雨的ｐＨ值越低，在相同作用时内形成的硬度值越高。ＳＯ４＾２－，ＨＣＯ３＾－是硬度组分自土中迁出的主要载体；     

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