基于GIS技术的胶东地区金矿地质异常成矿预测研究

该文基于胶东地区丰富的地质、物化探资料,通过建立GIS地质数据库,实现对各类地质空间数据综合分析,了解地质实体之间的相互关系,掌握各种地质异常与金矿分布的关系。运用MapGIS地理信息系统的空间分析方法,对金矿成矿与找矿密切相关的地质异常信息进行提取、叠加,形成组合地质异常,并运用组合地质异常进行金矿成矿预测研究。     

基于GIS技术的胶东地区金矿地质异常成矿预测研究

该文基于胶东地区丰富的地质、物化探资料,通过建立GIS地质数据库,实现对各类地质空间数据综合分析,了解地质实体之间的相互关系,掌握各种地质异常与金矿分布的关系.运用MapGIS地理信息系统的空间分析方法,对金矿成矿与找矿密切相关的地质异常信息进行提取、叠加,形成组合地质异常,并运用组合地质异常进行金矿成矿预测研究.     

辽宁省金矿成矿系列划分及特征

通过对辽宁省金矿地质特征和成矿规律的研究，将省内金矿划分为 4个成矿系列组合， 5个成矿系列类型， 7种成矿系列， 13个亚系列和 17个矿床（式）类型，并阐述各成矿系列的主要特征及规律，为金矿的预测和勘查提供理论依据。     

黔西南金矿与物化探异常分布规律研究

文章对黔西南金(锑汞)矿产与物探重力异常及化探元素异常(含组合)的分布特征进行研究,认为其矿产分布与物化探异常分布有密切对应关系,即与重力负异常分布区域、与化探异常(Au、Sb、Hg、Mo)分布的规模、强度等有关,并结合矿产产出规律和成矿地质条件等,预测了部分金矿成矿远景地段。     

山东内生金矿矿床谱系及其致矿地质异常

矿床谱系是对成矿多样性的理论概括,而成矿多样性又是由不同级别、不同性质的致矿地质异常决定的.本文论述了山东省内生金矿矿床谱系及其致矿地质异常.     

广西桂东某地硅化破碎带型金矿的发现及意义

广西桂东某地硅化破碎带型金矿，是大瑶山地区北侧该类型金矿的首次发现，找矿意义深远。文章着重介绍该金矿的发现史，概述了其地球化学异常特征，提出应重新审视对１／２０ 万异常特别是低缓异常的评价，对处于有利成矿地质条件下的低缓异常的找矿意义，应重新确认     

山东栖霞地区水系沉积物地球化学特征及找矿预测

在开展1∶5万水系沉积物测量工作基础上,对栖霞地区的元素分布特征、元素富集和分异特征、元素相关性分析、单元素异常特征等地球化学特征进行了初步分析。结合地质成矿背景,根据化探异常和元素成矿特征圈定27处组合异常,并进行了综合分析和异常查证,验证多处异常具有较好的蚀变矿化,其中在AS21区发现5条蚀变带,4条金矿(化)体,说明该区具有良好的找矿前景。     

滇黔桂(金三角)地区金矿时空演化规律与成矿模式

滇黔桂(金三角)地区是我国重要的金矿成矿区.为探究该地区金矿成矿规律,文章通过研究该地区成矿地质背景及构造演化,分析区域重力场、航磁场、化探异常等与金的成矿关系,探讨微细粒浸染(卡林)型金矿的时空演化规律,并提出成矿模式与成矿模型,建议今后该地区金矿找矿工作以微细粒浸染(卡林)型金矿为主攻矿种,加强深部勘探.     

青海沟里地区水系沉积物地球化学异常特征及找矿预测

青海沟里地区是我国西北的重要金矿矿集区，为进一步探寻沟里地区的找矿潜力，以该地区１∶５万水系沉积物地球化学测量数据为研究对象，采用平均值±３倍标准差的方法提取异常下限并圈定单元素异常与综合异常，结合研究区内的地质特征对圈定的异常进行了解释与评价。在圈定找矿远景区之前，首先对研究区内德龙金矿床的水系沉积物地球化学结构特征与地质特征进行了剖析，认为北西向的断裂与 Ａｕ、Ａｓ组合异常是金的有效的找矿标志，并构建了地质－地球化学找矿模型，以此为指导圈定出热龙金矿找矿远景区；之后对成矿地质条件较好的、以铜为主的（ＨＳ０１）综合异常进行了剖析，认为其有寻找铜多金属矿的潜力，圈定了龙洼卡鲁铜多金属矿找矿远景区。后续的异常查证工作中，在热龙找矿远景区内发现了金铅矿体，在龙洼卡鲁找矿远景区内发现了铜银矿体。本研究丰富了该区的矿产类型并为该区的找矿工作指明了新方向。      

鲁东金矿成矿规律及新的找矿方向

通过分析鲁东地区金矿成矿地质条件和区域地球物理场、区域地球化学场特征，并与典型金矿床地质特征进行类比，初步认为胶北隆起的破碎带蚀变岩型（焦家式）和石英脉型（玲珑式）金矿，以及近年来在胶莱盆地周缘找到的蓬家夼金矿床（产在盆缘控制性断裂带中）和发云夼金矿床（产在早白垩世莱阳群砾岩中），是在早白垩世同一个区域构造应力场下形成的，属同源、同期成矿作用的产物，为同一成矿系列的金矿床组合。胶莱盆地周缘具有源、层、热、裂、晕相统一的成矿地质条件和矿化信息，是今后寻找蓬家夼式和发云夼式金矿的远景地区。     

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.     

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 comprehensive academic journal dedicated to presentation of multi-disciplinary achievements in Arctic and Antarctic expeditions and research.Its primary purpose     

JOURNAL OF OCEAN UNIVERSITY OF CHINA

<正>Copyright Submfnion of a roanusatpt inks:that the work described has not been published before(exoept In the form of an abstrW or as part of a published lecture,review,or thesis);that it is not under consideration for publication elsewhere that its publication has been approved by ail     

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 results on oceanography and marine fisheries.The fieldcovered include the physical,chemical,biological,geo-     

Hydraulics and Hydrology in Mountain Areas

<正>The 35th IAHR World Congress was held in Chengdu,China from September 8 to September 132013.The title of the conference was:"The Wise Finds Pleasure in Water:Meandering through Water Science and Engineering".During the congress,1239 papers were presented in 139sessions for oral presentations and 7 sessions for poster presentations.After the Congress,a Committee was appointed to select some of the best papers presented at the Congress for publication,after a     

Sea ice thickness measurement in spring season in Bothnian Bay using an electromagnetic induction instrument

As an important component of the cryosphere,sea ice is very sensitive to the climate change.The study of the sea ice physics needs accurate sea ice thickness.This paper presents an electromagnetic-induction(EM) technique which can be used to measure the sea ice thickness distribution efficiently,and the successful application in Bothnian Bay.Based on the electromagnetic field theory and the electrical properties of sea ice and seawater,EM technique can detect the distance between the instrument and the ice/water interface accurately,than the sea ice thickness is obtained.Contrastive analysis of the apparent conductivity data obtained by EM and the value of drill-hole at same positions allows a construction of a transformable formula of the apparent conductivity to sea ice thickness.The verification of the sea ice thickness calculated by this formula indicates that EM technique is able to get reliable sea ice thickness with average relative error of only 12%.The statistic of all ice thickness profiles shows that the level ice distribution in Bothnian Bay was 0.4-0.6 m.     

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