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陆相喷流
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  continental exhalation
     Located tectonically on the western margin of the Lanping basin on the northeastern side of the main India-Asia collision zone, the Jinman vein copper deposit occurs in Mesozoic terrestrial sandstone and mudstone. It is a new type of copper deposit closely associated with continental exhalation.
     处于印度大陆与亚洲大陆主碰撞带北东侧的兰坪盆地西缘的金满铜矿床,产于中生代陆相沉积砂岩、泥岩中,以其属新类型陆相喷流铜矿床而引起人们的关注。
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  “陆相喷流”译为未确定词的双语例句
     In addition, the possibity of the continental exhalative sedimentary minerlization is also discussed in this paper.
     此外还探讨了陆相喷流沉积成矿的可能性。
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     3. land facies;
     3.;
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     In addition, the possibity of the continental exhalative sedimentary minerlization is also discussed in this paper.
     此外还探讨了喷流沉积成矿的可能性。
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     DEVELOPMENTS IN SEQUENCE STRATIGRAPHY OF CONTINENTAL STRATA
     层序地层学进展
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     PHASE AND ITS SIGNIFICANCE
     的涵义
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The rate of terrigenous sedimentation which constrains the formation and preservation of the submarne exhalative sedimentary deposits can be considered as an indicator to prospect for the exhalative sedimentary deposits in the hanging-wall alteration and can determine the submarine depth at which massive sulfide deposits occur. In addition, the possibity of the continental exhalative sedimentary minerlization is also discussed in this paper.

研究海底喷流沉积矿床形成和陆源沉积速率,可确定喷流沉积矿床处于上盘蚀变的找矿标志和块状硫化物矿床产出的海底深度。此外还探讨了陆相喷流沉积成矿的可能性。

The copper deposits occurring in Lanping Simao basin of western Yunnan are a new type of copper deposits with many unique features. The cooper deposits exist in Mesozoic and Cenozoic clastic formation composed of sandstone, siltite and argillite. The copper orebodies mostly occur in the host rocks not only in veinlike and network forms but also in bedded quasibedded and lens like forms. Ores have very simple mineral assemblages. Over 20 mineral species have been identified. Besides ordinary sulfides of such...

The copper deposits occurring in Lanping Simao basin of western Yunnan are a new type of copper deposits with many unique features. The cooper deposits exist in Mesozoic and Cenozoic clastic formation composed of sandstone, siltite and argillite. The copper orebodies mostly occur in the host rocks not only in veinlike and network forms but also in bedded quasibedded and lens like forms. Ores have very simple mineral assemblages. Over 20 mineral species have been identified. Besides ordinary sulfides of such copper minerals as chalcopyrite, tetrahedrite, bornite and chalcocite, there are also other minerals like pyrite, galena, sphalerite, azurite, stibnite, quartz, calcite, ferroan dolomite and barite. Ore fabrics are characterized mainly by veinlike, network, brecciated forms and subordinately by bedded, laminated, disseminated forms. Wallrock alterations are mostly silication, calcitization and baritization. δ 34 S values in the copper deposits are -35 6‰~+7 0‰ in sulfides and +7 7‰ ~+16 8‰ in sulfates . δ 13 C values are -22 4‰~-23 7‰ for organic carbon, -7 4‰~+0 8‰ for calcite and ferroan dolomite, -10 8‰~-3 1‰ for CO 2 of inclusion fluids in quartz and -32 1‰~22 2‰ for CH 4 of inclusions in quartz. δ 30 Si values are -0 3‰~0 0‰ in quartz and -0 3‰~+0 1‰ in rocks. Lead isotopic ratios of hydrothermal mine\|rals including sulfides and quartz are 206 Pb/ 204 Pb=18 120~18 962, 207 Pb/ 204 Pb=15 556~15 793, and 208 Pb/ 204 Pb=38 552~39 298, while those of rocks are 206 Pb/ 240 Pb=18 524~19 268, 207 Pb/ 204 Pb=15 587~15 634, and 207 Pb/ 204 Pb=38 431~38 914 Hydrothermal fluids have δ 18 O values of -10 4‰~+8 4‰, which were obtained on the basis of the isotope fractionation equation of quartz water, barite water and calcite water and the δ D values of -137‰~-30‰. The above described isotopic studies show that the ore forming solution was mainly derived from the paleometeoric water. The amount of the hydrothermal fluids in mineralizing and altering systems was relatively small. Lead in the ores came mainly from country rocks and underlying rocks and partly from deeper sources. Sulfur, silicon and carbon were derived from many sources such as the red clastic formation, volcanoclastic rocks and basic rocks. The recent tendencious idea about the genesis of the deposits is that the deposits underwent two ore forming periods, the sedimentary period and the hydrothermal mineralization period. The former was a stage of preliminary enrichment of ore materials and the formation of the source bed, whereas the latter was a stage of the formation of orebodies. Formed in the Mesozoic and Cenozoic clastic rock formation composed of sandstone, siltite and shale, the copper deposits are comparable with typical snadstone and/or shale type copper deposits in other parts of the world.However, the authors have found through the systematic study of the deposits that there are obviously differences between the typical sandstone and/or shale type copper deposits and the studied type. Many features of the copper deposits are similar to those of hydrothermal mineralization areas. It is shown that the copper deposits of the study area have unique metallogenic mechanism.

兰坪—思茅中新生代盆地中的铜矿床 ,主要产于由砂岩、粉砂岩和页岩组成的含盐红色碎屑岩建造中。对矿床的同位素组成研究表明 :成矿溶液主要来自大气降水 ,矿化和蚀变作用是在水 /岩比值较低的体系中进行的 ;铅来自赋矿的沉积岩与基底岩石的混合 ;硫、碳和硅则具有多来源的特性。矿床地质特征和同位素组成特点表明 ,所研究的铜矿床与典型砂页岩型铜矿床存在显著差异 ,而与一些地热区的矿化作用相似。说明研究区砂页岩中的铜矿床具有特殊的成矿机理 ,即在经历了沉积成岩作用发生矿质初步聚集后又通过陆相喷流作用而形成工业矿床的。

Located tectonically on the western margin of the Lanping basin on the northeastern side of the main India-Asia collision zone, the Jinman vein copper deposit occurs in Mesozoic terrestrial sandstone and mudstone. It is a new type of copper deposit closely associated with continental exhalation. Its metallogenic epoch is now still in dispute. The copper-bearing hydrothermal alteration mineral sericite beside the principal orebody of the Jinman copper deposit was analyzed using the conventional 40Ar/39Ar stepwise...

Located tectonically on the western margin of the Lanping basin on the northeastern side of the main India-Asia collision zone, the Jinman vein copper deposit occurs in Mesozoic terrestrial sandstone and mudstone. It is a new type of copper deposit closely associated with continental exhalation. Its metallogenic epoch is now still in dispute. The copper-bearing hydrothermal alteration mineral sericite beside the principal orebody of the Jinman copper deposit was analyzed using the conventional 40Ar/39Ar stepwise heating dating method, and three 40Ar/39Ar apparent average ages, namely, 88, 67 and 37 Ma, were obtained. According to these ages, combined with the geological setting of ore deposition in the Lanping basin, the authors think that the formation of the Jinman copper deposit underwent mineralization at 67 Ma in the early stage and that at 37 Ma in the late stage, which were superimposed on each other, with the latter representing the main formation age of the Jinman copper deposit. The two mineralization ages of the Jinman copper deposit may be interpreted as the isotopic age information left by major tectonic events such as the India-Tibet collision (in the Paleocene) and strike-slip motion-pulling-apart (in the Eocene) in the ore deposit, implying the effects of the Paleocene tectonism and Eocene tectonomagmatic metallogenesis on the formation of the regional metallogenic zone in northwestern Yunnan.

处于印度大陆与亚洲大陆主碰撞带北东侧的兰坪盆地西缘的金满铜矿床,产于中生代陆相沉积砂岩、泥岩中,以其属新类型陆相喷流铜矿床而引起人们的关注。关于其成矿时代至今仍然存在争论。采用常规40Ar/39Ar阶段升温测年法对金满铜矿床主矿体旁侧的含铜热液蚀变矿物绢云母进行了测试,获得3组视平均年龄分别为88Ma、67Ma、37Ma。结合兰坪盆地区域地质成矿背景,认为金满铜矿成矿经历了早期67Ma的成矿作用和晚期37Ma的成矿叠加作用,后者代表了金满铜矿的主要形成年龄。金满铜矿床的2期成矿年龄可能是印-藏碰撞(古新世)和走滑-拉分(始新世)等重大地质构造事件在矿床中留下的同位素年龄信息,暗示着古新世时期的构造作用和始新世时期的构造-岩浆-成矿活动对兰坪盆地的作用。

 
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