液包体研究

矿物结晶或破裂后重结晶过程中,可能有少部分液体圈闭在矿物颗粒内,直径0.001～0.01mm,除液体外经常还有小气泡.在斑岩铜矿的勘探工作中,发现石英液包体的岩盐含量与岩石的铜含量直接相关,在风化和形成土壤过程中,液包体可能不受影响.研究残留石英颗粒的液包体是有用的,特别是热带地区强烈的淋滤作用从矿体上部土壤搬走了大部分铜,研究液包体最有用,是岩石地球化学勘探的一个补充手段.     

液动冲击器

为了增大冲锤的效力,该冲击器的冲击质量放置在岩心管之周围。于岩心管的上部,装了一个带喷嘴的喷射式活阀。冲击非经岩心管而直接地作用于与钻头相联结的移动式异径接头上。     

液液萃取电感耦合等离子体光谱法测定碳酸盐岩中的单质硫

建立了碳酸盐岩样品中单质硫的分析方法,此法以正己烷为萃取剂,在180.7 nm和182.0 nm波长下用电感耦合等离子体光谱法(ICP-AES)测定国家标准物质GBW(E)07108和碳酸盐岩样品。正己烷萃取碳酸盐岩中单质硫的回收率在90%～110%之间;每个样品测定7次,相对标准偏差(RSD)<5.0%。结果表明,此法满足实验要求,可用于大批量碳酸盐岩样品中单质硫的测定。      

液-液萃取-气相色谱法测定水中9种有机氯农药

采用正己烷液-液萃取法提取,气相色谱法-电子捕获检测器测定水中9种有机氯农药。优化了实验条件:添加两种替代物作为分析过程的质量监控;使用浓硫酸磺化法净化去除杂质;采用Rtx-5MS和Rtx-1701柱双柱定性,保证数据准确可靠。9种有机氯农药的方法检出限为0.0017～0.0079μg/L,回收率为74.7%～105.1%,相对标准偏差(RSD,n=7)为4.2%～9.3%,9种农药在0.5～100μg/L内与峰面积呈良好的线性关系。方法检出限低,准确度和精密度高,简便,适用于批量样品的分析。     

十二烷基苯磺酸钠冲洗液的特点

十二烷基苯磺酸钠冲洗液具有较强的抗C_a~( )能力及较好的润滑性，很适合用于钻进碳酸盐地层。已逐渐在一些队里应用，并取得较好的效果。但十二烷基苯磺酸钠冲洗液具有不同于其他羧酸钠盐冲洗液的特点，应当引起重视。     

液动螺杆马达与液动潜孔锤复合钻具的研究

螺杆马达与液动潜孔锤同属孔底动力机,复合起来难度较大。通过对钻具参数匹配,钻具的连接方式及水功率的消耗等问题分析,对复合钻具研究的理论方法进行了探讨,提出了适合于科学钻探的复合钻具的两种模式,为进一步研究奠定了基础。     

LD-M_1磨削液简介

LD-M_1磨削液是为解决人造金刚石压机顶锤、压缸等YG-8硬质合金的磨削加工而研制的。是一种不含矿物油，动、植物油，不含亚硝酸钠等有毒物质的非离子型的新型化学合成磨削液。     

矿液流向的探讨

探讨矿液的流向问题,有着重要的意义。形成内生矿床的矿液究竟是怎样运移的?从哪里上来又流向何处?这是一个复杂的过程,它取决于很多内在和外在因素。现在我们所见到的矿石、矿体,是某一时期地质作用的结果,而它的演变过程是看不到的。因此,只能从这一过程所留下的特征     

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.     

Définition d'une limite multicritère ; stratigraphie du passage Campanien–Maastrichtien du site géologique de Tercis (Landes,SW France)Definition of a multi-criteria boundary; stratigraphy of the Campanian–Maastrichtian interval of the geological site at Tercis (Landes,SW France)

Lithostratigraphy, physicochemical stratigraphy, biostratigraphy, and geochronology of the 77–70 Ma old series bracketing the Campanian–Maastrichtian boundary have been investigated by 70 experts. For the first time, direct relationships between macro- and microfossils have been established, as well as direct and indirect relationships between chemo-physical and biostratigraphical tools. A combination of criteria for selecting the boundary level, duration estimates, uncertainties on durations and on the location of biohorizons have been considered; new chronostratigraphic units are proposed. The geological site at Tercis is accepted by the Commission on Stratigraphy as the international reference for the stratigraphy of the studied interval. To cite this article: G.S. Odin, C. R. Geoscience 334 (2002) 409–414.     

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.     

Late Wuchiapingian (Late Dzhulfian,early Late Permian) limestone olistolites within the Tertiary flysch of Glypia Unit (Mount Parnon,central–eastern Peloponnesus,Greece)

Some olistolites reworked in a Tertiary flysch of Mount Parnon (Peloponnesus, Greece) exhibit a Late Permian assemblage, dominated by Paradunbarula (Shindella) shindensis, Hemigordiopsis cf. luquensis and Colaniella aff. minima. This association corresponds to the Late Wuchiapingian (=Late Dzhulfian), a substage whose algae and foraminifera are generally little known. Contemporaneous limestones crop out in the middle part of the Episkopi Formation in Hydra, but they are rather commonly reworked in Mesozoic and Cainozoic sequences. The palaeobiogeographical affinities shared by the foraminiferal markers of Greece, southeastern Pamir, and southern China, are very strong (up to the specific level), and are congruent with the Pangea B reconstructions. To cite this article: E. Skourtsos et al., C. R. Geoscience 334 (2002) 925–931.     

PALEONTOLOGY

正20141596 Liu Yunhuan(School of Earth Sciences and Resources,Chang’an University,Xi’an 710054,China);Shao Tiequan Early Cambrian Quadrapyrgites Fossils of Xixiang Boita in Southern Shaanxi Province(Journal of Earth Sciences and Environment,ISSN1672-6561,CN61-1423/P,35(3),2013,p.39-43,3 illus.,20 refs.)     

GEOCHEMICAL EXPLORATION

正20141719 Chen Zhijun(State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan 430074,China);Chen Jianguo Automated Batch Mapping Solution for Serial Maps:A Case Study of Exploration Geochemistry Maps(Journal of Geology,ISSN1674-3636,CN32-1796/P,37(3),2013,p.456-464,2 illus.,2 tables,10 refs.)     

MICROPALAEONTOLOGY

正20140962 Chen Fenning(Xi’an Institute of Geology and Mineral Resources,Xi’an710054,China);Chen Ruiming Late Miocene-Early Pleistocene Ostracoda Fauna of Gyirong Basin,Southern Tibet(Acta Geologica Sinica,ISSN0001-5717,CN11-1951/P,87(6),2013,p.872-886,6illus.,56refs.)     

PETROLOGY

正1.IGNEOUS PETROLOGY20142008Cai Jinhui(Wuhan Center,China Geological Survey,Wuhan 430205,China);Liu Wei Zircon U-Pb Geochronology and Mineralization Significance of Granodiorites from Fuzichong Pb-Zn Deposit,Guangxi,South China(Geology and Mineral Resources of South China,ISSN1007-3701,CN42-1417/P,29(4),2013,p.271-281,7illus.,     

ENVIRONMENTAL GEOLOGY

正20141205Cheng Weiming(State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,CAS,Beijing 100101,China);Xia Yao Regional Hazard Assessment of Disaster Environment for Debris Flows:Taking Jundu Mountain,Beijing as an     

PROSPECTING EXPLORATION

正20141266Fan Chaoyan(Guangdong Provincial Key Laboratory of Mineral Resources and Geological Processes,Guangzhou 510275,China);Wang Zhenghai On Error Analysis and Correction Method of Measured Strata Section with Wire Projection Method(Journal of