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mantle-derived fluid
相关语句
  地幔流体
     3He/4He ratios of fluid inclusions in pyrite range from 0.16 to 0. 86 Ra, whereas40 Ar/36Ar range from 332 to 3288. Analyses of He, Ar isotope from three gold deposits demonstrate the paleofluids were a mixture between mantle-derived fluid and crustal fluid, the crustal fluid is dominated.
     结果显示,该金矿田黄铁矿流体包裹体中的~3He/~4He变化较小,为0.16~0.86Ra,而~(40)Ar/~(36)Ar的变化较大,为338~3288。 本文认为大渡河金矿田成矿流体是地幔流体与地壳流体混合作用的结果,其中,以地壳流体占主导地位。
     He-Ar, Ne and Xe isotopic compositions suggest that the ore-forming fluid of the fluid inclusions in the CCSD HP-UHP rocks were composed mainly of crustal fluid and a little air-saturated water, while the mantle-derived fluid was nearly absent. In the fluid inclusions, the He derived predominantly from the crust, the Ar are composed mainly of crustal radiogenic ~ 40 Ar and about one third air Ar.
     CCSD中HP-UHP岩石主要造岩矿物的He-Ar、Xe和Ne等同位素组成清楚显示其中流体包裹体主要由地壳变质流体和少量大气饱和水组成,而深源地幔流体组分很低,其中He主要来自地壳,Ar主要由壳源放射性成因40Ar*和少量(平均32.6%)大气Ar混合组成,少量Ne和Xe可能来自地幔。
短句来源
     The Relationship between Mantle-derived Fluid and Gold Ore-formation in the Eastern Shandong Peninsula: Evidences from D-O-C-S Isotopes
     地幔流体参与胶东金矿成矿作用的氢氧碳硫同位素证据
短句来源
  “mantle-derived fluid”译为未确定词的双语例句
     3.The carbon and He isotopes indicate that the ore-forming fluid of Xiangshan uranium deposit is composed of CO2-3He-rich mantle-derived fluid and CC>2-poor meteoric fluid.
     3、 氦-氩同位素研究表明,相山铀矿床的成矿流体由富CO2和3He的幔源流体与贫CO2的大气成因流体混合而成。
短句来源
     This paper focuses on geochemical features of deep fluids (mainly mantle-derived fluid) and their effect on oil/gas reservoirs formation in Dongiyng sag, Jiyang depression and Central Tarim basin, by using isotopic geochemistry, organic geochemistry and thermodynamics.
     以济阳坳陷东营凹陷和塔里木盆地塔中地区为例 ,在前人深部流体研究的基础上 ,应用同位素地球化学、有机地球化学及热力学定量模型 ,对沉积盆地深部流体的活动特征及其油气成藏效应进行了初步的探讨 .
短句来源
     Sr-Nd isotopic composition of the scheelites indicates the primitive mineralizing fluid derived predominantly from the lower crust,but interfusion of the mantle-derived fluid could not be excluded.
     Sr-Nd同位素组成显示本区原始成矿流体主要来自下地壳,但不排除有幔源物质加入。
短句来源
     In terms of the tectonic settings of mantle-derived gas reservoirs in eastern China,the paper expounds some researches and applications concerning mantle-derived fluid geochemistry,mantle-derived gas identifying signs,main controlling factors of mantle gas reservoirs,as well as the time and space distribution rule of mantle-derived gas pools,and also simply recounts the new research trends in identifying synthetically mantle-derived gas and finding favorable areas,and some key problems in them.
     针对有利幔源气藏发育的中国东部大地构造环境,阐述了我国在幔源流体地球化学特征、幔源气地球化学判识标志、幔源气藏发育的主控因素和时空展布规律等方面所取得研究成果与应用情况,简述了在幔源气综合判识、寻找幔源气有利发育地区等方面的最新研究进展和面临的一些关键性问题。
短句来源
     Combined with other evidences,it is believed that the ore-forming fluid in the Daping gold deposit was a mixture of mantle-derived fluid and the lower crust-sourced CO2-rich fluids.
     这些特征揭示了该矿成矿流体为近临界的高CO2(CO2≥H2O)的中低盐度的CO2-H2O-NaCl体系流体,在成矿过程中基本不存在流体混合,但发生了明显的沸腾和相分离作用。 该矿是剪切带控制下的中深中温热液金矿,成矿作用主要是减压沸腾环境下的快速沉淀。
短句来源
  相似匹配句对
     MANTLE METASOMATISM
     地幔交代作用
短句来源
     Mantle eyes
     海湾扇贝外套眼由短柄与外套膜边缘相连,是由一个皮下眼囊构成。
短句来源
     DEEP MANTLE AND ITS FLUIDS
     深部地幔及深部流体
短句来源
     THE MANTLE FLUID AND METALLOGENY
     地幔流体与成矿作用
短句来源
     MANTLE-CRUST METALLOGENESIS
     幔─壳成矿作用
短句来源
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To study the genesis of the orebearing dolostone, one of the key problems of the genesis of the famous Bayan Obo deposit, the writers determine and compare the carbon and oxygen isotope compositions of dolomite and calcite of the ore-bearing dolostone with those of two micrite mounds and a carbonatite dyke.The micrite mound at the top of the Cambro-Ordovician Sailinhuodong Group, , in Heinaobao, about 25 km southeast of Bayan Obo, and the micrite mound of the Upper Cambrian in Jiu Yuan, the Western Hills, Beijing,...

To study the genesis of the orebearing dolostone, one of the key problems of the genesis of the famous Bayan Obo deposit, the writers determine and compare the carbon and oxygen isotope compositions of dolomite and calcite of the ore-bearing dolostone with those of two micrite mounds and a carbonatite dyke.The micrite mound at the top of the Cambro-Ordovician Sailinhuodong Group, , in Heinaobao, about 25 km southeast of Bayan Obo, and the micrite mound of the Upper Cambrian in Jiu Yuan, the Western Hills, Beijing, show the δ13C values of 0±2‰ and δ18O values of 18. 3‰ to 25. 1‰, indicating normal marine precipitation. Oxygen isotope fractionations be- tween dolomite and calcite in the micrite mounds from Heinaobao are in disequilibrium, indicating dolomitization of limestone during the diagenesis.Profile - sampling was carried out for carbonates in the Bayan Obo orefield. Carbon and oxygen isotope analyses show that the dolostones within the East Mine and at the eastern end and western end of the orebearing dolostone belt have similar δ13C and δ18O ranges. The dolostones within the East Mine have δ13C of -7. 9‰ to -1.1‰ and δ18O of 9. 1‰ to 20. 9‰; the dolostones at the two ends have δ13C of -7. 9‰ to -0. 6‰ and δ18O of 8. 6‰ to 25. 7‰. Carbon and oxygen isotope fractionations (Δ13C and Δ18O) between dolomite and calcite in the orebearing dolostone from a part of the samples have Δ13C and Δ18O values with both less than 0‰, indicating the influence of secondary alteration. A number of low δ18O dolomite also has negative Δ18O values, indicating the intensive alteration by mantle-derived magnesium-rich fluids to sedimentary carbonates.A carbonatite dyke northeast 3 km notheast of the East Mine, intruded in H2 sandstone, has a small range of isotopic variation: δ13C varies from - 7. 23‰ to - 4. 7‰ , being similar to the normal mantle; δ18O varies from 11. 9‰ to 16. 4‰, being significantly higher than the δ18O of the mantle (5. 7‰±1. 0‰), indicating that the sedimentary carbonate was carried into the mantle by plate subduction to form 18O-rich carbonatite magma via mixing and melting at high temperatures and pressures. Both carbon and oxygen isotope fractionations between dolomite and calcite from the carbonatite dyke are less than 0‰, being in conflict with the sequence of 13C- and 18O-enrichment in dolomite, relative to calcite at thermodynamic equilibrium. Thus, the disequilibrium dolomite-calcite pairs are not cogenetic, and at least one of them is of secondary origin. This implies that the carbonatite dyke underwent hydrothermal alteration subsequent to its emplacement.The present studies suggest that the dolostone in the Bayan Obo ore district would result from metasomatism by mantle-derived fluids of the sedimentary carbonates. It is concluded that the carbonates of the micrite mounds underwent the metasomatism by mantle-derived fluids which were extremely rich in REE and some other elements, resulting in the formation of the su-perlarge Fe-Nb-REE ore deposit in Bayan Obo. The large variation in both δ13C and δ18O values of the ore-bearing dolostone are ascribed to the heterogeneous metasomatism by the mantle-derived fluid of the sedimentary carbonates.

本文通过方解石和白云石的碳和氧同位素分析,对比研究了白云鄂博赋矿白云岩、黑脑包微晶丘、北京西山微晶丘、宽沟北正常沉积灰岩和白云鄂博碳酸岩墙,从而探讨了赋矿白云岩的成因及其与超大型Fe-Nb-REE矿床的成因关系。结果为:①黑脑包腮林忽洞群顶部微晶丘和北京西山寒武系顶部微晶丘碳酸盐的δ~(13)C值都在0±2‰左右,δ~(18)O值为18.3‰~25.1‰,均具有典型海相沉积碳酸盐岩的特点;②白云鄂博东矿采场δ~(13)C值为-7.9‰~-1.1‰,δ~(18)O值为9.1‰~20.9‰;矿区东西两端δ~(13)C值-7.9‰~-0.6‰,δ~(18)O值8.6‰~25.7‰;均介于地幔流体与典型沉积碳酸盐岩之间。部分赋矿白云岩样品中白云石与方解石之间的碳氧同位素分馏△~(13)C和△~(18)O值均小于0‰,表明其受到过次生蚀变作用,低δ~(18)O值白云石样品所对应的负△~(18)O值反映了地幔镁质流体对沉积碳酸盐岩的强烈交代作用;③矿区—富稀土碳酸岩墙的δ~(13)C值为-7.2‰~-4.7‰,δ~(18)O价值为11.9‰~16.4‰,表明其碳酸岩岩浆并非原始地幔来源,而可能与俯冲板块携带的沉积碳酸盐岩...

本文通过方解石和白云石的碳和氧同位素分析,对比研究了白云鄂博赋矿白云岩、黑脑包微晶丘、北京西山微晶丘、宽沟北正常沉积灰岩和白云鄂博碳酸岩墙,从而探讨了赋矿白云岩的成因及其与超大型Fe-Nb-REE矿床的成因关系。结果为:①黑脑包腮林忽洞群顶部微晶丘和北京西山寒武系顶部微晶丘碳酸盐的δ~(13)C值都在0±2‰左右,δ~(18)O值为18.3‰~25.1‰,均具有典型海相沉积碳酸盐岩的特点;②白云鄂博东矿采场δ~(13)C值为-7.9‰~-1.1‰,δ~(18)O值为9.1‰~20.9‰;矿区东西两端δ~(13)C值-7.9‰~-0.6‰,δ~(18)O值8.6‰~25.7‰;均介于地幔流体与典型沉积碳酸盐岩之间。部分赋矿白云岩样品中白云石与方解石之间的碳氧同位素分馏△~(13)C和△~(18)O值均小于0‰,表明其受到过次生蚀变作用,低δ~(18)O值白云石样品所对应的负△~(18)O值反映了地幔镁质流体对沉积碳酸盐岩的强烈交代作用;③矿区—富稀土碳酸岩墙的δ~(13)C值为-7.2‰~-4.7‰,δ~(18)O价值为11.9‰~16.4‰,表明其碳酸岩岩浆并非原始地幔来源,而可能与俯冲板块携带的沉积碳酸盐岩与地幔流体在深部的高温混合熔融有关。碳酸岩墙中白云石与方解石之间的碳和氧同位素分馏均小于0‰,说明该碳酸岩墙中的白云石与方解石并非同成因矿物,至少其中之一为

The Tan -Lu fault is a multi-active fa ult zone,which may reach as deep as ma ntle.With the formation and evolution of the Tan -L u fault,different kinds of deposits and oil-gas fields have been formed.Since Palaeozoic Era,the character of the Tan -Lu fault zone changed from tension through compresso-shear to torsion-tension,the accompanying magmatism evolved from ultrabasic and basic through acidic to basic an d alkaline,and the related deposits a nd oil-gas fields revolved from magm atic deposits(such as diamond,Cr,Ni,Cu,Fe...

The Tan -Lu fault is a multi-active fa ult zone,which may reach as deep as ma ntle.With the formation and evolution of the Tan -L u fault,different kinds of deposits and oil-gas fields have been formed.Since Palaeozoic Era,the character of the Tan -Lu fault zone changed from tension through compresso-shear to torsion-tension,the accompanying magmatism evolved from ultrabasic and basic through acidic to basic an d alkaline,and the related deposits a nd oil-gas fields revolved from magm atic deposits(such as diamond,Cr,Ni,Cu,Fe ect)through hydrothermal deposits(such as,Au,Mo,W,Sn,Pb,Zn,Hg,Sb,A g)and oil-gas fields to Au,Ag,gem deposit s and petrol,hydrocarbon,non-hydr ocarbon gas fields.The mineral-ization related to the Tan -Lu fault z one may be characterized by obvious s tages,symmetry-like,intersectin g and differences between the two sides of the fault zone,which may be contr olled by longitudinal-transversal features of the Tan -Lu fault,the nature of the massif which the Tan -Lu fau lt cuts through and the nature of the folds trending EW and crosscut ing by the Tan -Lu fault.With the evolution of the Tan -Lu fault and the crust-mantle interactions to di fferent extent,the mantle-derived fluids may have different contribut ions to the formation of the different kinds of deposits and oil-gas fields,and t he combined action of mantle-derived and the Earth's crust-derived fluids caused by int ense crust-mantle interactions may be essential condition for the formation of the concentrated hydrothermal deposits.

郯庐断裂是多次活动的深达地幔的断裂带,在其形成与演化过程中伴随有不同类型矿产形成,古生代以来郯庐断裂性质由张裂-压扭-扭张变化,相应的岩浆活动由超基性、基性-酸性-基性、碱性演化,与之有关的矿产由金刚石、铬、镍、铜、铁等岩浆矿床→金、钼、钨、锡、铅、锌、汞、锑、银的热液矿床与石油与烃类气藏→金、银、石油、烃类气、非烃气藏及宝石矿床等演变。郯庐断裂两侧的成矿作用,表现出明显的阶段性、偏对称性、交叉性和两侧成矿的差异性特点,是郯庐断裂带本身纵横特点、郯庐断裂穿越地块性质以及与其交切的东西向褶断带性质联合控制的结果。郯庐断裂两侧不同部位、不同时期、不同类型矿产形成过程中,壳幔作用程度不同,地幔流体有不同程度的贡献,而强烈的壳幔交换作用导致的地幔流体和地壳流体的联合作用常是大规模热液矿床矿集区形成的必要条件。

This paper focuses on geochemical features of deep fluids (mainly mantle-derived fluid) and their effect on oil/gas reservoirs formation in Dongiyng sag, Jiyang depression and Central Tarim basin, by using isotopic geochemistry, organic geochemistry and thermodynamics. It is found that both CO_2- (H_2O+CO_2) and H- (H_2O+CH_4+H_2) rich fluids from the mantle are injected into Dongying sag and CO_2-rich fluid in Central Tarim basin. The quantitative study of heat transformation of deep fluid...

This paper focuses on geochemical features of deep fluids (mainly mantle-derived fluid) and their effect on oil/gas reservoirs formation in Dongiyng sag, Jiyang depression and Central Tarim basin, by using isotopic geochemistry, organic geochemistry and thermodynamics. It is found that both CO_2- (H_2O+CO_2) and H- (H_2O+CH_4+H_2) rich fluids from the mantle are injected into Dongying sag and CO_2-rich fluid in Central Tarim basin. The quantitative study of heat transformation of deep fluid ascendance shows that the mantle is an effective heat carrier. The evidence of thermal anomalies in Dongying sag and Central Tarim basin proves the existence of heat effect of deep fluids. Hydrocarbon generation from kerogen degragation not only needs heat but also actually requires hydrogen. It is known that mantle-derived, hydrogen-rich fluid may increase hydrocarbon production when the fluid meets source rocks in basins. Experimental hydrogenation simulation shows that hydrogen addition increases the production greatly. For sapropelic kerogen, the effect of hydrogenation becomes evident after fastigium of hydrocarbon generation and the production can increase up to 147%. While for humic kerogen, hydrocarbon production by hydrogenation can be increased at every stage of thermal evolution. It is found that deep fluids increase production rate of the source rocks in Dongying sag and Central Tarim basin. Hence it can be concluded that the mantle-derived fluids have great influence on hydrocarbon generation from source rocks in both energy and substance supply.

以济阳坳陷东营凹陷和塔里木盆地塔中地区为例 ,在前人深部流体研究的基础上 ,应用同位素地球化学、有机地球化学及热力学定量模型 ,对沉积盆地深部流体的活动特征及其油气成藏效应进行了初步的探讨 .研究表明 ,在东营凹陷不仅存在着幔源富二氧化碳流体(H2 O +CO2 )的活动 ,而且还存在着幔源富氢流体 (H2 O +CH4+H2 )的活动 .塔里木盆地塔中地区也发现了幔源富二氧化碳的活动 .深部流体上升过程中热能传递的定量研究表明 ,幔源流体是良好的热能载体 .东营凹陷和塔中地区的有机质异常热变现象证实了深部流体的热效应 .有机质热演化生烃不仅需要热 ,而且是个缺氢的过程 ,富氢流体注入沉积盆地势必对油气的生成产生影响 .加氢热模拟实验结果表明 ,加氢可大幅度提高烃源岩的产烃率 ;对腐泥型干酪根而言 ,加氢生烃效应最显著的阶段是在生烃高峰之后 ,产率可增加 14 7%以上 ;腐植型干酪根的加氢生烃效应在各个阶段都较显著 .在东营凹陷和塔中地区分别发现了深部流体促进烃源岩生烃的现象 .因此 ,深部流体在能量上和物质上对油气的生成均可构成重要的影响 .

 
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