山东泰安蟠龙山水泥用灰岩矿床地质特征及成因分析

蟠龙山矿区位于山东省泰安市岱岳区夏张镇,出露地层主要为古生代寒武纪长清群馒头组、九龙群张夏组、崮山组和炒米店组,张夏组上灰岩段为含矿岩段,划分一个矿层(KC01)。矿层基本裸露地表,呈层状,划分5个品级层,其中I级品层1个,呈层状;Ⅱ级品层4个,呈似层状。矿床内无夹层。矿石主要由方解石组成,呈鲕粒结构、泥晶结构和微晶结构及厚层状、豹皮状构造。矿石平均含量Ca O 50.67%、MgO 1.88%、K2O+Na2O 0.31%,提交资源量45 134.7万t,为超大型优质水泥用灰岩原料矿山。矿床成因为海相化学及生物化学沉积。     

枣庄桃花山水泥用灰岩矿地质特征及矿床成因

桃花山水泥用灰岩矿矿床位于枣庄市峄城城区,赋存于寒武纪九龙群张夏组地层中,呈层状产出,共分2个矿层,含5个夹石层。矿区分东、西2个矿段,西矿段矿石质量较好,无夹层;东矿段局部存在高镁、高碱夹石层。矿床平均有益、有害组分为Ca O 52.75%,Mg O 1.70%,R2O 0.269%,矿床属海相沉积矿床。     

山东峨山玻璃用石英砂岩矿地质特征及成因分析

峨山玻璃用石英砂岩矿床赋存于寒武纪长清群李官组地层中,呈层状产出,共1个矿层,由于区内褶皱构造发育和长期的风化剥蚀,被分割为5个矿体。矿石质量较好,无夹层;矿床平均组分Si O296.46%,Al2O30.84%,Fe2O30.21%,矿石质量优良。矿床属层控的滨海陆源碎屑沉积矿床。     

山东平度闫村石墨矿岩石学特征及找矿标志

闫村石墨矿为赋存于古元古代荆山群陡崖组徐村段含石墨变质岩系地层中的区域变质型矿床,属角闪岩相—麻粒岩相,是中深变质作用的产物。在系统采集石墨矿石样品的基础上,对石墨矿石样品进行了化学成分、矿物组成、结构构造、矿物共伴生关系、石墨结构等较为系统的研究。结果表明：矿石中有用组分固定碳含量2.74%～5.36%,平均3.34%,还含有SiO2,TiO2,Al2O3,Fe2O3,FeO,MnO,MgO,CaO等;矿石矿物为石墨,脉石矿物为石英、钾长石、白云母、透辉石、透闪石、黄铁矿、黄铜矿等。越靠近地表,矿石中黏土矿物含量越高,矿物组成越复杂;石墨片径一般在0.2～1.0mm,个别大径达1.2mm,片厚0.03～0.05mm。石墨片受力程度不同,局部有破碎和揉皱现象、泥化现象。闫村石墨矿属于区域变质型矿床,具有明显的找矿标志,赋矿层位、构造位置、岩性特征、岩石类型、地球物理特征,均是寻找该类石墨矿的良好标志。     

广西下雷次生氧化锰矿床特征及控矿条件

本文主要论述广西下雷次生氧化锰矿床的矿体形态产状、矿层结构、矿石矿物及结构构造、矿石化学组分等特征,探讨次生氧化锰矿的形成受原生碳酸锰矿、地形地貌、地质构造、原生矿石及围岩的物质成分、气候及水文等条件所控制。     

沂水县高庄地区铜铅矿地质特征及成矿模式探讨

沂水县高庄铜铅矿赋存于张夏组盘车沟段灰绿色页岩夹薄层泥灰岩和张夏组下灰岩段鲕粒灰岩之间的构造角砾岩中,在形态上和空间位置上严格受蚀变角砾岩带控制的似层状矿体。通过对矿区内地层、控矿构造、矿体特征和矿石质量的分析论述,认为该矿床为碳酸盐型中低温热液充填—交代矿床,并建立了成矿模式。     

山东省枣庄市侯孟熔剂用白云岩矿地质特征及开发利用前景

侯孟熔剂用白云岩矿位于枣庄市台儿庄区张山子镇东南,区内圈定了1个矿体,呈层状产出,矿体赋存于震旦纪土门群石旺庄组地层中,受地层层位控制,产出稳定。矿物成分主要为白云石,矿石结构以泥微晶结构为主,块状构造,矿石自然类型为灰色细晶白云岩。该矿床为滨海泻湖相沉积的层状石灰岩经白云岩化形成的交代型白云岩矿床,矿石主要有用组分含量分别为MgO 19.73%,CaO 30.33%,达到了熔剂用白云岩的工业标准要求,具有良好的开发前景。     

准噶尔盆地南缘芦草沟组碳质细粒沉积岩地球化学特征及地质背景

采用地球化学分析方法,研究准噶尔盆地南缘博格达北缘西段上二叠统芦草沟组碳质细粒沉积岩的地球化学特征、源岩风化程度、古气候和氧化还原环境等。结果表明:各主量元素质量分数变化范围大,SiO_2、Al_2O_3、TiO2质量分数均值由下段往上段升高,Fe_2O_3~T、MgO、Na_2O质量分数均值由下段往上段降低。SiO_2与Al_2O_3、K_2O质量分数呈较好的正相关关系,与CaO、MgO质量分数呈较好的负相关关系;Al_2O_3与K_2O质量分数呈较好的正相关关系,与CaO、MgO质量分数呈较好的负相关关系;CaO与MgO质量分数呈较好的正相关关系,与K_2O质量分数呈较好的负相关关系。微量元素Ga、Nb、Ta、Rb、Zn与Al_2O_3质量分数呈较好的正相关关系。稀土元素总量(REE)差异大,轻、重稀土元素分异较明显,但分馏弱于澳大利亚后太古代页岩(PAAS)。自下而上,芦草沟组源岩遭受的化学风化作用越来越强,下段源岩弱风化,中段源岩逐渐变为低风化,上段源岩过渡为中等风化。沉积早期至晚期,芦草沟组气候由略为干热转变为温湿,各段碳质细粒沉积岩沉积于水体分层不强的缺氧还原环境。     

鲁西南黄岗潜凹陷岩盐矿地质特征及找矿远景

黄岗潜凹陷岩盐矿床是山东省地质科学研究院近年发现的一大型岩盐矿产地,预测岩盐矿总资源量超过240×10~8t。本文在总结黄岗潜凹陷岩盐矿勘查成果的基础上,对区内岩盐矿沉积地质特征及成矿规律、岩相分布规律等进行了初步总结分析。岩盐矿赋矿层位为古近纪官庄群大汶口组中段,岩性为深灰色泥岩、粉砂质泥岩与灰白色膏质泥岩、石盐岩互层,是一套含石盐、石膏的浅湖—咸湖相沉积建造,其盖层为新近纪黄骅群和第四系。岩盐矿层赋存形态简单,呈层状产出,产状稳定,走向近EW向,倾向近S向,倾角平缓,一般3°,局部断层附近可达10°。区内揭露岩盐矿层31层,埋深1079.75～1730.86m,单矿层平均厚度0.25～24.64m,单层最厚53.96m,累计平均厚度175.45m,单孔累计最大厚度320.23m,是山东迄今单孔控制最大的厚度,NaCl平均品位44.11%～96.08%。岩盐矿石矿物成分较为简单,主要盐类矿物成分为石盐和硬石膏,杂质矿物主要为黏土质矿物;矿石主要化学组分为NaCl,其次为CaSO_4,其他组分含量甚微;矿石结构主要为中粗粒他形—半自形粒状结构,矿石构造主要为块状构造;岩盐矿划分为结晶块状石盐矿石和石膏石盐混生石盐矿石2种自然类型,矿石工业类型初步确定为石膏质石盐矿石。黄岗潜凹陷盆地为一套浅湖—咸湖相沉积,大致反映了含盐水体淡化—浓缩—淡化的蒸发沉积过程;平面上初步划分石盐岩相区和膏泥岩相区2个岩相分布区,其中石盐岩相区靠近成盐盆地局部沉积中心,发育厚层岩盐矿。黄岗潜凹陷西南部含盐地层总体表现为向南倾伏的单斜形态;区域重力资料显示,该区靠近盆地局部沉积中心,具有较大的岩盐矿找矿潜力。区内岩盐矿层厚、质纯、埋深适中,初步评价具备建设盐穴储气储能库的地质条件,矿床开发利用前景广阔。     

山东青州王家辇南王孔地区水泥用石灰岩矿地质特征分析

王家辇-南王孔地区水泥用灰岩矿位于青州市西北10km处。区内第四系广布,以大站组为主,含矿地层为奥陶纪马家沟群北庵庄组微晶灰岩、泥质条带灰岩,呈单斜形式产出,矿层延伸稳定。区内构造以断裂构造为主,断裂只对矿体有局部的位移,以及岩石的破碎,对矿体、矿石质量基本没有影响。矿石自然类型为微晶灰岩型和条带状灰岩型。工业类型为水泥用灰岩,成矿类型为浅海相沉积矿床。     

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     

Influence of livestock soil eutrophication on floral composition in the Pyrenees mountains

Livestock behaviour in the Pyrenees includes free grazing and a long resting period that provokes the accumulation of dung and urine in some places,so-called camping areas. The aims of this study were （i） to analyze any change in floral composition,and in nutritional and chemical contents of plants in a livestock camping area; and （ii） to relate the floral composition with soil chemical properties. In a linear transect,five sampling zones were established,from the centre of the camping area to the surrounding Nardus stricta-dominant pasture. The above ground plant biomass and the topsoil were sampled in each zone with 6 replicates per zone. Plant species were classified and weighed to calculate above ground biomass,nutritional and chemical contents,and Shannon diversity and evenness indices. Additionally,soils were sampled in two periods,at the beginning and at the end of grazing period. Soil available nutrients （nitrate,ammonium,phosphorus,potassium,calcium and magnesium）,total nitrogen,organic carbon and pH were measured.
Plant chemical contents （protein,lignin and others） were significantly related to the proportions of grasses,legumes and other plants; so,the protein content is positively correlated with legumes plant biomass while lignin content is negatively correlated with grasses. Both plant and soil nutrients increased linearly towards the centre of the camping area. However,the relationship among plant species richness,diversity and evenness relative to its position along the studied transect was bell-shaped. From the outskirts to the centre of the camping area,plants with low nutrient demand were progressively replaced by those with medium and high nutrients demand and by pioneers.
Nardus stricta-dominant pasture has low plant diversity and plant nutrient content as well as a poor soil nutrient availability. The presence of the camping area introduced patches with more soil nutrients and new species in the large spatial scale. However at a small spatial scale,the strong soil nutrien     

General Table of Contents(Vol.11,2014)

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介绍GPS定位中的几个概念

文章概略介绍了利用卫星进行定位的原理 ;由卫星信号传播、信号接收和SA政策等引起的理论误差 ;给出了多种快速、高精度定位的工作模式和观测点选择的原则 ;列出了将WGS - 84坐标转换为我国坐标的公式及解算参数的具体方法 ,供读者在GPS工作中参考。