临汾韩家峪石膏矿矿床地质特征

分析了韩家峪石膏矿矿体地质特征、矿石地质特征,以及矿床成因,得出了该石膏矿主要含矿层位为马家沟组五段下含膏带,呈层状-似层状产出;矿石类型分为交代型、沉积型和充填型三种类型;地表露头广泛发育膏溶特征;矿床成因为浅水蒸发型形成于潮上带盐沼(萨勃哈)环境蒸发作用,沉积型石膏形成于泻湖环境蒸发泵吸作用。     

浅谈寻找隐伏矿床的理论和方法

本文从地质勘查找矿角度,将未出露现代侵蚀面或被沉积物覆盖的矿床统称为隐伏矿床。寻找隐伏矿的理论和方法可分为：①地质分析（构造体系、地质建造、矿田构造、隐伏侵入体等）;②矿床学理论（成因模式、找矿模型等）;③数学地质（统计预测、综合信息、地质异常等）;④地球化学找矿（构造地球化学、原生矿晕、次生矿晕、离子态分布模式）;⑤地球物理找矿（层析成像、地电提取、物探填图等）;⑥矿物学方法（矿物标型、蚀变矿物等）;⑦遥感地质找矿;⑧其他方法（生物找矿、计算机技术等）。     

凭祥金矿地质特征与找矿标志

在广西凭祥市早三叠世火山岩中首次发现的数个具工业价值的微细粒型金矿,肯定了它是我区新的找金层位,拓宽了找金的新领域。根据地质勘查资料,通过对龙塘、山更土两个主要矿床的剖析,论述该类金矿成矿的区域地质背景、矿床地质特征、找矿标志及找矿前景。     

登封下寒武统次生岩石的成因及其地质意义

河南登封大金店乡大贾沟下寒武统辛集组、馒头组中的次生岩石——盐溶角砾岩、次生灰岩、石膏硅化岩是盐类沉积物的地表露头。这些次生岩石中角砾的成因是盐类沉积物(主要是石膏)在地表条件下吸水膨胀,在地层的重压下塑性流动使夹层岩石碎裂而成的;次生灰岩则是石膏与大气水反应的产物;石膏硅化岩则是瘤状石膏受次生方解石化后再硅化的结果。沿这些次生岩石倾向在地下深处可找到原生盐类沉积矿床。以这种认识为指导,在华北其它地区有望找到一定规模的盐类沉积矿床。     

菜园铅矿成矿地质条件及模式探讨

菜园铅矿属低温热液浅成矿床,矿石类型属含铅重晶石脉型,其规模、形态严格受张扭性断裂构造控制,矿源层为靠近矿脉的莱阳群地层,成矿介质来自大气降水。该文通过对其矿床地质特征、控矿因素及矿床成因的分析研究,同时通过搜集和研究区域内相类似矿床的信息资料,初步建立了其成矿模式,在分析找矿标志的基础上,提出了该区下一步的找矿方向,加大矿区外围的找矿力度,以期发现新的矿体。     

对铜峪沟铜矿床成因的再认识及其找矿意义

铜峪沟铜矿床从发现经普查到详查和多次专题研究，对其矿床成因的认识经历了矽卡岩型、沉积一变质热液改造层控型到热水沉积型矿床等多次演变。经此次勘探工作的研究，认为它是火山岩一黄铁矿型矿床，并对本矿床的成矿地质环境和找矿前景提出了新的认识。     

莱州市大浞河铁矿矿床地质特征及找矿方向

大浞河铁矿赋存在古元古代粉子山群底部的小宋组层间破碎带内,该组地层是矿床主要的矿源层。根据论证后的工业指标对矿床进行重新圈定及评价,并对矿床地质特征、主要控矿因素、矿体赋存规律及找矿标志进行浅析,以利于矿山地质找矿工作的开展。     

山东省枣庄市张范乡小屯石膏矿床的地质特征

该文论述了小屯石膏矿的地层、岩石和构造等矿区地质特征、矿床地质特征和矿石质量,对矿床成因进行了分析。小屯石膏矿是山东省首次在奥陶纪东黄山段地层中发现的具有工业开采价值和经过详查的小型石膏矿床。该矿床的发现突破了以往的地质认识,拓宽了寻找石膏矿的领域,对以后寻找同类型的石膏矿床具有一定的借鉴意义。     

内蒙古赤峰地区馒头沟铜矿地质特征及成因研究

馒头沟铜矿是近年来在内蒙古赤峰地区发现的一处砂(页)岩型铜矿,在内蒙乃至北方属首次发现。该文在区域地质背景、矿区地质及矿化特征方面对该矿进行了初步的分析研究,并讨论了其矿床类型、成矿物质来源及成因,可进一步指导馒头沟矿床的勘查和认识,且对内蒙古乃至北方晚二叠世寻找同类矿床具有一定的地质意义。     

辽西地区下寒武统馒头组下部角砾岩的成因及其找矿意义

下寒武统馒头组下部的一套层比稳定的紫红色、灰黄色白云质砾岩,砾石成分为疏松多孔的白云岩。具棱角状或次棱角状,角砾的粒度分选和磨圆差,填隙物质与砾石成分相同。根据对砾岩的物质组成、沉积特征的分析,其成因可能是组成砾岩的碳酸盐岩含较高的盐类经次生变化形成的溶塌角砾岩。由于溶塌角砾岩具稳定的层位,含盐类高,可能存在盐岩(主要是石膏),故在一定埋深有可能找到膏层。     

Thermohaline structure inhomogeneity associated with polynia at the northern margin of Emery Ice-shelf

Based on the hydrographic data in austral summer during the 22nd Antarctic Expedition of China(2005/2006),some features can be found about the northern margin of Emery ice shelf as follows.The heat content in the surface layer(0-50 m) at the eastern end and the western end of the ice-shelf margin is much higher than that at the middle.The upper mixing-layer depth and the seasonal thermocline depth at the middle of the ice-shelf northern margin are much shallower than those at the both ends.However there is much less difference between the middle and the ends in the bottom layer.The remote sensing photos show that the inhomogeneity in the surface-layer water is closely related to the spatial distribution of the floes and polynia in the area.     

Phylogenetic analysis of cultivable bacteria isolated from Arctic sea-ice

Phylogenetic analysis based on 16S rDNA of 8 strains of cultivable bacteria isolated from Arctic sea-ice was studied.The results showed that strain BJ1 belonged to genus Planococcus,which was a genus of low mole percent G C gram-positive bacteria;strain BJ6 belonged to genus Burkholderia of β-proteobacteria and the rest 6 strain all belonged to γ-proteobacteria,of which strain BJ8 was a species of Pseudoalteromonas,strain BJ2-BJ5 and BJ7 were members of genus Psychrobacter.Phylogenetic analysis also indicated that bacteria of genus Psychrobacter of the isolates formed a relatively independent phylogenetic cluster in comparison with other bacteria belonged to genus Psychrobacter.     

Information for authors

正1 Aims and Scope Advances in Polar Science(APS)is an international,peer-reviewed journal jointly sponsored by the Polar Research Institute of China and the Chinese Arctic and Antarctic Administration.APS is a comprchensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose is to publish achievements in fundamental research,applied     

Advances in Polar Science CONTENTS(Volume 25,2014)

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Guide to Authors： Journal of Mountain Science

<正>AIMS AND SCOPE(Editorial Policy)The Journal of Mountain Science(JMS)is devoted to mountains and their surrounding lowlands-ecoregions of particular global importance,with a particular emphasis on the important highlands/mountains in the world,such as the Tibetan Plateau,the Himalayas,the Alps,the Andes,the Rockies and many other mountain ranges of our planet.     

Journal of Mountain Science(JMS)

<正>The Journal of Mountain Science(JMS),founded in2004,is an international English-language journal on mountain sciences.JMS is supervised by the Chinese Academy of Sciences(CAS),sponsored by the Chengdu Institute of Mountain Hazards and Environment,CAS,published by Science Press China,and distributed by Springer exclusively throughout the world(excluding Mainland China).The JMS is published bimonthly,fulltexted in SpringerLink and CNKI,indexed/abstracted by     

Relationship of Arctic sea ice and Northern Hemispheric 500 hPa Polar vortices

Using the NCEP/NCAR reanalysis monthly 500 hPa height data on a 2.5 latitude-longitude grid and 1°×1° sea ice data,the polar vortex area,intensity index and arctic sea ice area index are calculated respectively,and the meridional distribution,period variation and the abrupts in the long range trend are analyzed to study their relationship.The results show that the meridional distribution of sea ice and polar vortex h-ave distinctive difference,the relative positions of them are different in the eastern and western hemispheres,and exept they have periods of 4 months,quasi half year,quasi year,4-5 years and 10 years commonly,and each of them has its own respective variation as well.The sea ice area is decreasing apparently since 1980's,so is the polar vortex area,but their abrupt changge time are different totally.The area of sea ice and polar vortex has prominent positive correlation,but the relationship of sea ice intensity,polar vortex intensity,polar vortex area is complicated.     

Preliminary study on plasma membrane fluidity of Psychrophilic Yeast Rhodotorula sp.NJ298 in low temperature

The ability of cell to modulate the fluidity of plasma membrane was crucial to the survival of microorganism at low temperature. Plasma membrane proteins, fatty acids and carotenoids profiles of Antarctic psychrophilc yeast Rhodotorula sp. NJ298 were investigated at -3 ℃, 0 ℃ and 8 ℃. The results showed that plasma membrane protein content was greater at -3 ℃ than that at 8 ℃, and a unique membrane polypeptide composition with an apparent molecular mass of 94.7 kDa was newly synthesized with SDS-PAGE analysis; GC analysis showed that the main changes of fatty acids were the percentage of unsaturated fatty acids (C18∶ 1 and C18∶ 2) and shorter chain saturated fatty acid (C10∶ 0) increased along with the decrease of the culture temperature from 8 ℃ to -3 ℃; HPLC analysis indicated that astaxanthin was the major functional carotenoids of the plasma membrane, percentage of which increased from 54.6±1.5% at 8 ℃ to 81.9±2.1% at -3 ℃. However the fluidity of plasma membrane which was determined by measuring fluorescence anisotropy was similar at -3 ℃, 0 ℃ and 8 ℃. Hence these changes in plasma membrane's characteristics were involved in the cellular cold-adaptation by which NJ298 could maintain normal plasma membrane fluidity at near-freezing temperature.     

Author Index for Journal of Mountain Science Volume 11,2014,pp 1-1656

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