共查询到20条相似文献，搜索用时 78 毫秒
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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。 相似文献
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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. 相似文献
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传统化探数据处理方法是先用数学方法(多元统计、衬值、分形等)圈定异常,之后再对异常进行评价,同一批化探数据,不同的人其评价结果可能有所不同,评价存在一定程度的主观性。笔者通过研究地质成矿规律来限定元素的组合规律,即将地质、地球化学规律融合于数学规律之中。通过对山东省1∶5万五井幅、悦庄幅大量区域化探数据进行重新处理,赋予数据以客观的地质内涵,来圈定成矿类型异常图、成矿强度异常图等带有特定地质意义的异常图,从而快速筛选与成矿有关的异常。定量分析了区内金铜等主要矿产的成矿强度,据此在区内圈定成矿远景区1处,圈定找矿靶区3处,有效指导了区内的地质找矿工作。 相似文献
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细细特郭勒地区位于东昆仑造山带西南部,昆中和昆北断裂带之间伯喀里克—香日德印支期金、铅、锌(铜、稀有、稀土)成矿带。区内古元古代金水口岩群大面积分布,华力西、印支期中-酸性侵入活动频繁,由北西西向逆断裂组与北东向平移断裂引起的次级断裂十分发育。通过近年来工作,圈定金异常,综合分析异常特征,了解区内金元素的分布及成矿元素组合特征,发现金破碎蚀变带,圈定金矿(化)体,初步查明了金矿(化)体地质特征,为区内寻找破碎蚀变岩型金矿床提供了基础资料。初步认为,本区具较好的成矿地质条件,成矿潜力较大,具寻找破碎蚀变岩型金矿有着深远的找矿前景。 相似文献
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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. 相似文献
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正Rapid changes of Arctic sea ice cover have been in the focus of the international climate research community in recent years.Quite a few of nations have completed a large number of related surveys and research projects in the Arctic Ocean.Up to now,China has performed six research cruises to the Arctic Ocean resulting in a significant volume of research output.Improved knowledge on the atmospheree-sea ice-ocean interactions in the Arctic is a 相似文献
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The GRV 024516 and GRV 024517 meteorite samples collected from Grove Montains,Antactica are ureilite and H5 ordinary chondrite,respectively.Based on the study of mineralogy-petrology,the cosmic-ray exposure ages and gas retention ages of these two meteorites were determinated and calculated.Their cosmic-ray exposure ages are 33.3 Ma,51.7 Ma,and gas retention ages are 1936.8 Ma and 3720 Ma,respectively.The ureilite contains diamond,graphite and amorphous C,which are mainly carrier of noble gases indicating obviously shock metamorphism effects,which induced 40Ar partial loss.The H5 chondrite indicates thermal metamorphism of parent body,its gas retention age fall the range between 3220 Ma and 4510 Ma of the least shocked H5 chondrites 相似文献
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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. 相似文献
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《极地研究(英文版)》2014,(3)
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 相似文献
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《山地科学学报》2014,(4):I0004-I0009
<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. 相似文献
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《山地科学学报》2014,(4)
<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 相似文献