邹城市三措并举规范河砂开采秩序

近年来,邹城市针对非法开采河砂、危害河道水利工程安全、破坏矿产资源、引发周边地下水位下降影响粮食生产的实际,采取多种措施,严格执法,坚决打击非法乱采、滥挖行为,有效规范了河道采砂管理秩序,取得了明显成效。     

铁矿开采对地下水环境影响评价实证研究

铁矿开采与地下水紧密联系,不仅会影响地下水资源,而且还会破坏地下水的动态平衡和生态环境。结合某铁矿开采项目实际,依据地下水环境评价导则,在分析铁矿区地下水水质、水文地质条件等资料的基础上,预测评价铁矿开采对地下水水质、水量等方面的影响,提出地下水环境保护措施。     

煤矿开采环境影响评价中地下水问题探析

煤矿的开采与地下水资源紧密相连,煤层往往与地下含水层相邻,采煤时会疏干地下水,这不仅影响了地下水资源的数量和质量,而且破坏了水的动态平衡和生态环境,造成一系列不良后果.根据煤炭开采工程的环境影响特点及环境保护的最新发展趋势,概略提出了煤矿区地下水环境影响评价的相关问题、煤矿开采引起的地下水环境问题、以及由煤矿地下水疏干引发的地面沉陷及其植被景观的影响.     

贵阳市三桥降落漏斗地下水资源开采环境承受能力极限平稳分析

贵阳西郊三桥地下水降漏斗是贵阳地区边界条件明显，开采井密集，开采量大且较稳定的典型漏斗。在漏斗内地下不开采环境动态方面已作过较深入的研究，但对漏斗范围内地下水资源开采是否会产生枯竭的问题，已引起有关专家的关注。本文对漏斗区域内地下水资源量进行了评价。     

贵阳市三桥降落漏斗地下水资源开采环境承受能力极限平衡分析

贵阳西郊三桥地下水降落漏斗是贵阳地区边界条件明显，开采井密集，开采量大且较稳定的典型漏斗。在漏斗区域内地下水开采环境动态方面已作过较深人的研究，但对漏斗范围内地下水资源开采后是否会产生枯竭（疏于）的问题，已引起有关专家的关注。本文对漏斗区域内地下水资源量进行了评价。采用极限平衡的方法着重讨论了漏斗区域地下水开采量与漏斗中心最大水位降深（埋深）的关系，并用获取的量化指标判定了漏斗区域内地下水资源开采条件下的极限疏干状态。本文对于因过量开采地下水而造成的不良地质环境问题及资源管理方面有一定意义。     

志丹靖边黄土区地下水合理开采方式研究

地下水是志丹靖边地区主要的用水来源,针对该地区水资源短缺的问题,通过控制性数值试验的方法,选择志丹靖边地区典型的区域,分别设计不同的方案,建立数值模型,对地下水的不同开采方式和开采强度下的降落漏斗形态和最大水位降深进行计算。结果表明,通过线状布井的方式沿河谷布设开采井优于在研究区内平均布井,并且线状开采强度应控制在600～800m~3/d·km~(-1)。对志靖地区地下水的合理开采具有指导意义。     

廊坊市地下水资源开采现状及环境地质问题浅析

随着廊坊市社会经济的迅速发展,导致对水资源的严重依赖,尤其是对地下水资源的依赖,廊坊市地下水开采量占全市供水的80％以上,在经济、社会发展中起到生命线的作用。对廊坊市地下水资源开采现状及地下水埋深变化进行分析,对超采地下水引发的环境地质问题提出对策措施,为廊坊市地下水资源规划、管理和配置及经济社会发展提供科学依据。     

青岛市主要供水水源地地下水资源开采潜力分析

青岛市地下水资源开发由来已久,历史上由于供水产生了一些环境地质问题,查清地下水资源开采潜力,更好地为地方经济发展服务成为当前的工作重点,从地下水开采潜力指数与地下水长期动态两个方面进行分析,结果表明青岛市主要供水水源地开采潜力不大,只在白马河-吉利河地段存在一定的开采潜力。     

北京平原地下水可持续开采方案分析

地下水过量开采已经引起北京平原地下水位持续下降,降落漏斗逐年扩大以及一系列环境问题。控制地下水开采,增加地下水补给以达到地下水可持续开采应当成为北京市水资源管理的重要任务。本文根据北京市中长期供水规划、水资源特点和地下水开采现状设计了4种地下水开发利用开采方案:即维持现状开采、增加补给量、减少开采量以及联合方案。运用已建北京平原地下水数值模拟模型对4个方案进行了模拟,分析了地下水系统水均衡量变化,地下水流场变化以及地下水动态变化,以此确定可能的可持续开发方案。结果表明,维持现状开采必将使含水层地下水疏干;增补和减开单独实施虽能改善现状,但难以实现。只有应用增补和减开的联合方案,才有可能实现地下水可持续开发。其为北京平原地下水资源的合理开发提供重要的依据。     

基于GIS的地下水资源开采潜力评价模型设计与实现

为辅助专业人员进行地下水资源开采潜力分析评价,采用“单位面积数量”指标,以地下水资源空间数据库为基础,利用GIS迭加分析方法,设计地下水资源开采潜力评价模型。基于MAPGIS 6.5二次开发函数库,在VC 6.0环境下开发地下水资源开采潜力评价软件。软件界面易于操作,可根据具体情况选择评价指标,评价数据来源于空间数据库,评价结果又以空间数据的形式保存,还能可视化表达。     

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