钢铁工业废水,含F^—废水与电厂粉煤灰污染与净化的初步试验

本文通过钢铁工业废水淋溶钢铁工业渗漏区土壤，不同ｐＨ值，不同含Ｃａ＾２＋，Ｆ＾－浓度与放心水与工业淋溶各种土壤，以及电厂冲灰水淋溶粉煤灰的三种试验，讨论废水中Ｃ６Ｈ５ＯＨ、ＣＮ＾－ＡＳ、Ｃｒ，Ｐｂ，Ｚｎ，Ｈ２Ｓ，ＢＯＤ，ＣＯＤ，Ｆ＾－，Ｃｌ＾－，ＳＯ＾２－Ｒ，ＮＯ＾－３，ＮＨ＾＋４，Ｎａ＾＋和硬度等的污染与自净规律，并提出了防治地下水污染的措施。     

溶液介质条件对重金属离子与石英表面反应的影响

实验研究表明,随着溶液ＰＨ值的升高石芟夺Ｃｕ＾２＋、Ｐｂ＾２＿、Ｃｄ＾２＋等重金属离子的吸附量和表面吸附覆盖率逐渐增大,而表面反应产物的结合开矿相应地出现由单核化合物、多核化合物〖ＳＯＣｕ４（ＯＨ）３＾４＋〗,直至表面沉淀（ＳＯＨ…Ｃｕ（ＯＨ）２（ｓ）〗。随着温度升高,石英对Ｃｕ＾２＋、Ｐｂ＾２＋、Ｃｄ＾２＋等重金属离子的吸附量逐渐减是随着溶液离子强度的增大,石英对Ｃｕ＾２＋离子的吸附量和表面离了     

文石—水体系氧同位素分馏机理的实验研究

采用“附晶生长法”分别在５０和７０℃下合成文石下矿物,获得了两种不同的文石与水之间的氧同位素分馏关系。结果证明,文石与水之间氧同位素分馏的化学动力学机 为两步：（１）碳酸根与水之间进行氧同位素交换和平衡,即：「Ｃ＾１６Ｏ３」＾＾３－＋２Ｈ２＾１８Ｏ＝「Ｃ＾１８Ｏ３＾１６Ｏ」＾２－＋２Ｈ２Ｏ１６Ｏ;（２）与水平衡以后的「ＣＯ２」＾２－离子与Ｃａ＾２＋结合生成文石,即：Ｃａ＾２＋＋＿「Ｃ＾１８Ｏ２＾１     

河台韧性剪切带金矿床成矿物理化学条件研究及熔融包裹体的发现

河台韧性切带金矿床产于震旦系－志留为质岩系深大断裂糜棱岩带中,本研究首次在矿床含矿石英脉及糜棱岩中发现熔融包裹体,流体－熔融包裹体及有机包裹体。不同类型包裹体均一温度,有机包裹体为１６０℃,成矿流体属Ｋ＾＋－Ｃａ＾２＋－Ｍｇ＾２＋－Ｎａ＾＋－ＳＯ４＾２－ＨＣＯ＾２－４－ＨＣＯ３＾－４－Ｃｌ＾－体系,具中偏碱性,微量气体特征：Ｈ２Ｏ〉ＣＯ２〉ＣＨ４〉（或〈）Ｈ２〉ＣＯ〉Ｃ２Ｈ２〉Ｃ２Ｈ６〉Ｏ２〉ＨＪ     

胶东台上金矿成矿机制模拟实验研究

模拟实验研究表明，台上金矿床的成矿机制为：胶东群地层重熔形成滦家河花岗岩岩浆时，初始浆为几乎均匀的熔体相；随着结晶成岩作用的进行，由于局部岩浆结晶分异作用，产生富Ｋ＾＋，Ｎａ＾２＾＋，Ｃａ＾２＾＋，Ｍｇ＾２＾＋，Ｆ＾－，Ｃｌ＾－，Ｓ＾２＾－，ＣＯ３＾２＾－及挥发份ＣＯ２，ＣＯ，Ｈ２Ｏ等的流体相，并不断从已结晶矿物及残熔体中，以［Ａｕ（ＨＳ）２］＾－，［Ａｕ（ＨＳ）Ｓ］＾２＾－，ＡｕＣｌ４］＾－等络     

论湖南石门砷—（金）矿床的古热泉成因

湖南石门砷－（金）矿床属古热泉成因,具有典型的三层结构模式,矿体呈筒状;矿床中硅质体属热泉沉积的硅华,矿石中微量元素间该区现代热泉体系沉积物的类似;成矿溶液富Ｎａ＾２＾＋,Ｃａ＾２＾＋,Ｃｌ＾－,ＨＣＯ３＾－和ＳＯ４＾２＾－,也与该区现代热泉水成分相似。泉水的氢,氧,氩,氦同位素研究表明,成矿溶液中水主要为大气降水。提出了热泉型砷－（金）矿床的成矿模式：下渗的大气降水被深部热流体加热,在地层中循环     

浙江西裘铜块状硫化物矿床火山-热泉沉积成矿的地质地球化学证据

浙江西裘矿区新元古代火山－热泉活动强烈,矿石Ｃｕ：Ｚｎ：Ｐｂ原子百分比与火山岩和热水沉积硅质岩相似。矿床δ＾３４Ｓ值为－６．５‰～２．８‰,δ＾１８Ｏ值为８．１４‰～２２．３２‰,铅同位素示踪主要为下地壳铅;矿石具较高的Ａｓ、Ｓｂ、Ｂｉ、Ｇａ、Ｚｎ、Ｂａ等含量;具较低的Ａｌ／（Ａｌ＋Ｆｅ＝Ｍｎ）比值,Ｚｎ（Ｐｂ＋Ｚｎ）比值接近１,均表现出火山－热泉沉积成矿地球化学特征。     

淡—咸水界面切换中矿物表面吸附性变化研究

实验研究表明,当电解质离子浓度从有低上升到极高时,矿物吸附金属离子的普遍下降,例外的仅有石英、水云母、ＣａＣＯ３和三水铝矿对Ｐｂ＾３＋、Ｚｎ＾３＋离子的吸 云母对Ｃｕ＾２＋的吸附和石英对Ｃｒ＾３＋的吸附。理论研究表明,一方面,电解质ＮａＣｌ的加入,使矿物表面Ｓｔｅｎ的层电位发生变化,△ψ（ψ０－ψβ）的绝对值增大,提高了矿物表面吸附离子的能力;另一方面,由于Ｎａ离子的竞争吸附和Ｃｌ离子与深液中金     

海水蒸发轨迹线及其应用

利用海水蒸发实验资料，在双对数图上，可以建立Ｃｌ＾－、Ｎ＾＋、Ｍｇ＾２＋、ＳＯ４＾２＋、Ｋ＾＋、Ｃａ＾２＋、ＨＣＯ３＾－、ｓＲ＾２＋、Ｂ＾３＋、Ｌｉ＾＋、Ｒｂ＾＋、Ｃｓ＾＋、Ｉ＾＋含量及矿化度与Ｂｒ＾－含量的关系曲线，称为海水蒸发轨迹线。它们可以和来帮助判断沉积盆地地下卤水的起源。分析沉积盆地蒸发岩卤水在后来的成岩环境中是否发生过成岩反应。     

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。     

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