大汶口盆地杨家坡矿段岩盐矿地质特征及岩相新认识

大汶口盆地矿产资源丰富,构造发育,构造对矿床起着明显的控制作用。在以往的地质勘查工作中,仅在东向洼地内发现了岩盐矿床,推测大汶口盆地岩盐相区呈NW-SE向椭球状分布于东向洼地内。杨家坡矿段位于东向洼地北东侧毗邻的满庄-大西牛洼地,在该矿段地质勘查中,首次发现了多层岩盐工业矿层,单层真厚度0.84~5.09 m,品位NaCl含量81.70%~97.14%,厚度较稳定,品位较均匀。该矿段岩盐矿床的发现,使得盆地内岩盐相区向北东延伸了约4 km,赋盐面积扩大了约5 km^2,并推测岩盐相区呈“冰壶”状分布,壶体分布于东向洼地,壶柄分布于满庄-大西牛洼地。同时,对断层F 3的活动性质及其对岩盐相区的控制作用等有了新认识。     

山东省新泰市孟家屯石榴子石矿矿床地质特征

孟家屯地处华北陆块、鲁西隆起、鲁中隆起区、东平-蒙山断隆、蒙山凸起的北侧,属片岩型石榴子石矿床。含矿岩石(矿化体)赋存于新太古代孟家屯岩组一段石榴石英岩中。矿区内共圈定石榴子石矿层3个,矿层长150～490m,厚1.67～19.40m,矿层单样品石榴子石含量一般11.33%～29.85%,平均品位17.86%。矿床矿石矿物单一为石榴子石。矿层赋存于孟家屯岩组一段中,矿石呈粉红色,氧化后呈褐红色,为其重要找矿标志。     

刚果布谷马西矿区北部矿段钾石盐矿床地质特征

布谷马西矿区北部矿段钾盐矿为大型矿床,共圈出钾盐矿层16层,其中钾石盐型矿层3层,赋存于光卤石岩上部。钾石盐型矿层赋矿标高260.83～321.32m,估算KCl（333）资源量1743.5万t,KCl平均品位23.02%。矿床成因类型为后生淋滤成因。     

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240×108t.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...     

青州市马家庄地区黏土矿成矿地质特征研究

青州市马家庄地区黏土矿主要赋存于第四纪中-上更新统大站组及全新统临沂组,赋矿层系分布面积较广,整体自南向北微有倾斜,呈等轴状展布,其厚度与古地形密切相关,古地形凹陷处矿体厚度较大,隆起区则较小,平均厚度12.61m,厚度变化系数27.79%。经差热分析可知,黏土矿石主要由蒙脱石+水云母+石英组成。属于陆相残—坡积混合型矿床,下部以残积相为主,中上部则以坡积相为主。全区矿石平均品位SiO₂ 67.61%,Fe₂O₃ 5.35%,Al₂O₃ 14.79%,硅酸率平均值n=3.37,铝酸率平均值p=2.77,可以作为水泥用黏土质原料开采。针对该区域内黏土矿,前人做了较多的勘探性工作,积累了丰富的原始地质资料,本文分析了区内黏土矿的赋矿层位及其空间变化特征,探讨其矿床成因、成矿地质特征,以期为今后该地区黏土找矿工作提供参考。     

山东省泰安市大汶口地区岩盐矿开发利用相关问题探讨

大汶口盆地内岩盐资源丰富,开发利用始于20世纪90年代,根据岩盐层赋存特征、矿石质量特征,盆地内岩盐采用钻井水溶法采矿。本次以岩盐开采方式为研究对象,基于岩盐开采现状调查,分析生产中卤水渗漏、堵井事故的产生原因及处理方式。通过分析,认为岩盐钻井水溶开采中,通过加强井组技术参数的研究可有效提高资源利用率,生产中通过选择高质量套管、提高固井质量、加强生产管理及监控等,可有效预防生产事故的发生。     

淄博市西宝山耐火黏土矿地质特征及找矿方向

西宝山耐火黏土矿为沉积型矿床,目前揭露1个耐火黏土矿矿层,赋存于石盒子群万山组底部“B”层黏土岩的下部,厚度较稳定,勘查开发潜力较大。通过对其地质特征、矿层特征、矿石结构构造及矿床成因分析,提出了找矿方向。认为该耐火黏土矿受沉积地层控制,呈层状分布,分布较稳定。依据该区地层产出情况,在青龙山断裂与禹王山断裂之间及两侧均具有良好的找矿前景,这为下一步找矿工作奠定了基础。     

苍山县黄墩石膏矿地质特征及其找矿意义

苍山县黄墩石膏矿位于韩四盆地的东端北侧,赋存于古近纪官庄群中段,由12个矿层组成,总体走向为50°-80°,倾向NNW及NW,倾角5°-13°,矿层沿走向长2 435 m,沿倾向宽1 290 m。矿体累计厚度最大50.64 m,最小7.08 m,平均品位（石膏＋硬石膏）66.62%。该矿床的成功勘查说明在盆地的边缘具备形成石膏矿床的地质条件。     

济宁颜店铁矿地质特征及济宁岩群含矿性研究

伏于济宁滋阳山一带千米盖层之下的古元古代济宁岩群是一套低绿片岩相变质含铁岩系,主要岩石组合为千枚岩、板岩、磁铁石英岩等,其原岩为海相含灰质泥岩、砂岩类中酸性火山岩、硅铁岩等,该套岩系最大控制厚度达580 m.其中赋存的条带状磁铁石英岩呈层状、似层状埋深在1 612.89～1 796.54 m之间,共有5层铁矿,总厚度85.53 m.估算预测的铁矿资源量(334)9.76亿t,mFe平均品位22.37%;低品位矿体预测的资源量(334)2.64亿t,mFe平均品位16.99%.     

浅谈国内、外铝土矿资源状况及产品竞争能力

文章从矿层厚度、矿石品位、矿体规模、开采技术条件等方面来说明下庄铝土矿的矿床地质特征。     

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.     

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

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Information for Authors

<正>The Journal of Ocean University of China(Oceanic and Coastal Sea Research)is a comprehensive academic quarterly sponsored by the Ocean University of China,published one volume per year.This journal is devoted to the publication of the theoretical and applied research