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The Background Features and Formation of Chemical Elements of Groundwater in the Region of the Middle and Lower Reaches of the Yangtze River 总被引：2，自引：0，他引：2
Zeng Zhaohua Institute of Environmental Geology Jiangxi Bureau of Geology Mineral Resources Nanchang Jiangxi Shang Ruoyun 《《地质学报》英文版》1997,71(1):80-89
The paper deals with the background features, formation and distribution of the chemical el-ements K, Na, Ca, Mg, Si, Fe, Mn, Cr, Ni,V, Co, Ti, Mo, Cu, Pb, Zn, As, Hg, Cd, Be, Li, Sr, B,F, Cl, Br and I in the groundwater in the region of the middle and lower reaches of the YangtzeRiver and their relations to the composition of the water-bearing media, properties of the overly-ing rocks and soils, redox environment, and groundwater flow condition, mineralization and pHof groundwater. 相似文献
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1Introduction Tracemetalsarereleasedtotheatmosphereduring combustionoffossilfuelsandwood,aswellasemis sionsfromavarietyofprocessesactingoncrustalmin erals,includingvolcanism,erosionandsurfaceweath ering.Onaglobalscale,resuspendedsurfacedusts havemadeagreatcontributiontothetotalnaturale missionoftracemetalstotheatmosphere,withCr,Mn andVaccountingfor>50%andCu,Mo,Ni,Pb,Sb andZnaccountingfor>20%,whilevolcanicactivity probablygeneratedasmuchas20%atmosphericCd,Hg,As,Cr,Cu,Ni,PbandSb(Pacyna,19… 相似文献
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平阴县浅层地下水调查采样密度为1点／16km^2,分析测试27项指标的含量变化规律后,认为调查区浅层地下水中除K,Mn,NO2^-等指标含量变化较大,局部富集外,其他指标含量变化小,在浅层地下水中分布较均匀。选择As,Ba,Be,Cd,Co,Cu,Fe,Hg,Mn,Mo,Ni,Pb,Se,Zn,F^-,Cl^-,Cr^6＋,NO2^-,COD,pH等20项指标,按《地下水质量标准》对浅层地下水环境质量进行的单因子和综合评价,结果显示较好级以上者达88．4％,而较差级仅占11．6％,无极差级分布,调查区内浅层地下水环境质量状况良好。 相似文献
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A PETROLOGICAL OVERVIEW OF THE KOHISTAN MAGMATIC ARC, NW HIMALAYA, N. PAKISTAN1 TahirkheliRAK ,MattauerM .ProustF ,etal.1979.In :GeodynamicsofPakistan[C].FarahA ,DeJongKA ,eds.GeolSurvPakistan ,Quetta ,1979.12 5～ 130 .
2 CowardMP ,WindleyBF ,BroughtonRD ,etal.In :CollisionTectonics[C]..CowardMP ,RiesAC ,eds.GeolSoc,London ,SpecPub ,1986 ,19:2 0 3～ 2 19.
3 BardJP ,MaluskiH ,MattePh ,etal.GeolBull ,PeshawarUniversity ,1980 ,13:87～ 93.
… 相似文献
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《《地质学报》英文版》2003,77(2)
Members of the Chengjiang Biota from the Lower CambrianNiutitang Formation, Zunyi County, Guizhou Province,ChinaYANG Ruidong, ZHANG Weihua, JIANG Lijun and GAO Hui(Guizhou University of Technology Guiyang, Guizhou 550003)The Chengjiang Biota was called a window of the "Cambrianexplosion". The occurrence of the biota is all along restricted ineastern Yunnan Province. Recently, Naronia, Archotubaconoidalis, Isoxys, Perspicaris, Lingulepis, Tsunyidiscus,Scenella, medusiform fossil, Leptomitus, Rhabdopleura fossil,Hyolithids, Zunyiphyton perelegans Yang et Zhao, 1999,Yuknessia sp., Longenema Ding, 1996, and Sphaerocongregusvariabilis were discovered in the Lower Cambrian Niutitang 相似文献
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《《地质学报》英文版》2007,81(6):F0003-F0003
1.Papers should be devoted mainly to various aspects of research concerning geosciences and related disciplines in China,such as stratigraphy,paleontology,origin and history of the Earth,structural geology,tectonics,mineralogy,petrology,geochemistry, geophysics,geology of mineral deposits,hydrogeology,engineering geology,environmental geology,regional geology and new 相似文献
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广西旅游地学资源丰富,在区位,成景条件,景观种类数量,质量,旅游业的形势,开发程度,客源市场,旅游产品,研究水平等特色明显,如何变资源为效益,必须从发展方向与总体目标,重点区建设模式,开放力度,设施配套及环境保护等方面认真研究,合理开发。 相似文献
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《岩土力学》2005,26(5):758-758
序号作者页码序号作者页码1栾茂田,张金利,杨庆1855-186120邹维列,王钊,林晓玲1961-1963,19682陈存礼,胡再强,谢定义1862-186621董金梅,刘汉龙,高玉峰等1964-19683李伟华,赵成刚1867-187222张玉军,李治国1969-19724邹广电1873-187823周佳媚,高波,李志业1973-19765拓勇飞,孔令伟,郭爱国等1879-188424张文泉,卢玉华,宫红月等1977-19806杨光华1885-1896,190225郭雪莽,张永顺,杨光1981-19837国胜兵,高培正,潘越峰等1897-190226周志芳,朱宏高,陈静等1984-19888张孟喜,王玉玲,冯建龙1903-190927白冰1989-19939刘传孝1910-191428蔡袁强,孟楷,徐长节… 相似文献
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《Scientia Geologica Sinica》1999,(1)
1.IntroductionForelandbasin,thesedimentarybasinlyingbetweenthefrontofanorogenandtheadjacentcraton,isanimportantaspectforthestudyonlithospheretectonicevolutionoforogen(e.g.,Tankard,1986,Ren,etal.,1991;Li,1992,Chen,etal.,1992,Liu,etal.,1994,LihouandAlien,1996,Li,etal.,1997,DongandZhang,1997).Currently,itisdividedintotwogenetictoes,i.e.,peripheralforelandbasinsituatedagainsttheouterarcoftheorogenduringcontinent-continentcollisionandretro-arcforelandbasinbehindamagmaticarclinkedwithsubductiono… 相似文献
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下寒武统牛蹄塘组是贵州沉积型镍钼矿床的主要产出层位.牛蹄塘组属浅水陆棚相沉积,是一套海侵体系下的黑色沉积建造.同时期黑色沉积建造在我国扬子地台,新疆各地以及印度,巴基斯坦北部,伊朗,法国,英格兰,威尔士,阿曼,俄罗斯,蒙古,澳大利亚,加拿大等范围内广泛分布,具有全球可对比性,是全球性的大洋缺氧事件的产物.在我国扬子地台区,早寒武世黑色岩系沉积层位稳定,分布面积近百万平方公里,上覆地层为钙质页岩,碳酸岩,下覆地层为磷块岩和含小壳化石的白云岩.寒武纪初期由于全球变暖,海平面上升,植物繁衍,带壳动物爆发,微生物在牛蹄塘期异常繁盛,同时,深部热源物质通过断裂构造的热水循环,伴有海底火山喷发的黑白烟囱向周围提供了丰富矿源,经生物成矿作用,牛蹄塘黑色岩系富集了包括Ni,V,Mo,Cu,U,Se,Au,Ag,REE以及铂族元素等众多有色、稀有稀土、贵金属元素. 相似文献
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DIFFUSION MODELLING IN GARNET FROM TSO MORARI ECLOGITE AND IMPLICATIONS FOR EXHUMATION MODELS 总被引：2，自引：0，他引：2
DIFFUSION MODELLING IN GARNET FROM TSO MORARI ECLOGITE AND IMPLICATIONS FOR EXHUMATION MODELS1 ChakrabortyS ,GangulyJ.ContribMineralPetrol,1992 ,111:74～ 86 .
2 ChemendaAI ,BurgJ P ,MattauerM .EarthPlanetSciLett ,2 0 0 0 ,174:397～ 40 9.
3 ChemendaAI ,MattauerM ,MalavieilleJ ,etal.EarthPlanetSciLett ,1995 ,132 :2 2 5～ 2 32 .
4 GirardM ,BussyF .TerraNostra ,1999,99/ 2 ,5 7～ 5 8.
5 GuillotS ,SigoyerdeJ ,LardeauxJM ,etal.Contr… 相似文献
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在地质钻探以及石油钻井中,为了研究各个钻进规程参数,岩石的机械物理性质以及钻头的性能三者之间的关系,必须获得和记录大量的试验数据,这些数据包括三个方面 1.钻头方面钻头编号,钻头直径,壁厚,钻头形状,金刚石浓度,金刚石粒度,钻头胎体硬度,钻头唇面面积等。 2.岩石方面岩石的硬度,动弹模量,泊松比,纵波速度,横波速度,研磨性指标,塑性系数,剪切模量,石英含量等。 相似文献
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吾国自有地质事业以来,对於稀有矿物,少有注意,唯民国二十年,何作霖先生在丁道衡先生所采绥远铁矿内,发现两种含Ce,La,Yt之Beiyinite与Oborite,二十三年张定钊氏曾用分光分析方法,检定赣南钨锡铋钼等矿内,含有V,Re(?)U(?),Ta,Nb(?),Cr,Te,Ag,Au等元素,最近Morris氏来广 相似文献
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SHEN Junfeng LI Shengrong HE Shaohui ZHANG Guangshan TONG Jinggui YAN Bokun State Key Laboratory of Geological Processes Mineral Resources China University of Geosciences Beijing Key Laboratory of Lithospheric Tectonics and 《《地质学报》英文版》2006,80(5):763-769
1 Introduction Bentonite is a valuable industrial material, which is composed mainly of montmorillonite. Due to many particular characteristics such as strong water sorbility, dilatability, stickiness, high ion-exchangeable capacity, Bentonite has been used widely in many fields of application, including petroleum, metallurgy and chemical industry, textile industry, medical application, construction, mining, agriculture, environment (Koch, 2002; Wang and Wu, 2002; Wagner and Schnatmeyer, 20… 相似文献
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一.热液硫化矿床的一些分散元素热液矿床包括多数最重要的金属矿床,如Cu,Pb,Zn,Ag,Sb,Hg,Mo,W,U,Au等。除最后三种元素外,其余都以硫化物为主要存在方式。这些硫化矿物,除含上列元素外,还常常含有一些稀少的元素,如Cd,Ga,In,Tl,Gl,Re,Se,Te等,后者的含量和硫化物中 相似文献