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hydrothermal circulation
相关语句
  热液循环
     Studies on Hydrothermal Circulation and Smokers of Modern Seafloor Hydrothermal Activity
     现代海底热液活动的热液循环及烟囱体研究
短句来源
     Currently, plentiful and substantial achievements of seafloor hydrothermal activity research are gained. But, many deep-level questions still remain unsolved, mainly including: hydrothermal circulation, forming mechanism, mass evolution and hydrothermal biology, of them the first one is the key point.
     当前,海底热液活动研究已取得了丰硕的成果,但是许多深层次的问题仍未解决,突出表现在热液活动的成因机制、热液循环、物质演化和热液生物学等问题,而核心问题是热液循环
短句来源
     Process of hydrothermal circulation can be divided into 3 parts scientifically and reasonably, that is, (1) hydrothermal circulation under the seafloor, (2) hydrothermal circulation in the interface of seafloor and ocean (near vents), and (3) hydrothermal fluid entering the ocean (hydrothermal plume).
     热液循环过程可以有机地分解为三个子过程:海底以下部分、海底与大洋交界处(热液喷口)及热液流体在大洋中的流动。
短句来源
     On the basis of these data and samples, we have understood the seafloor hydrothermal circulation by studying the fluidsediment/rock interaction, the heat and mass flux, the fluid flow, and the tectonics in control of seafloor hydrothermal activity. And we have got some knowledge about the characteristics of seafloor hydrothermalorigin petroleum, the architecture and constitute of seafloor hydrothermal products, and the relationship between the deep biosphere and the seafloor hydrothermal activity by analyzing these data and samples from the ocean drilling.
     在此基础上,通过研究流体—沉积物/岩石相互作用,热、物质通量和流体流动,分析构造对海底热液活动的控制作用,使人们对海底热液循环有所了解,并对深部热液成因石油的特征,海底热液沉积物的空间结构和物质组成,以及深部生物与海底热液活动的关系有了一些认识。
短句来源
     ③Midocean ridge seafloor hydrothermal circulation display doublediffusive convection pattern.
     ③洋中脊海底热液循环呈双扩散对流模式。
短句来源
  热液环流
     To be formed such large scale gold and silver deposits, the metallogenesis system must be hydrothermal circulation mechanism under a certain high pressure.
     成矿流体属亚临界、中 -低温、中 -低盐度的高密度流体 ,要形成如此大规模金、银矿床 ,成矿系统必须是开放的热液环流机制
短句来源
  “hydrothermal circulation”译为未确定词的双语例句
     There are two main Sr sources, one is “the continental Sr” with a high 87 Sr / 86 Sr, which is input to seawater by flux, the other one is “the oceanic Sr” with a low 87 Sr / 86 Sr, which is got into seawater directly by hydrothermal circulation through seafloor.
     研究认为牙形石是分析 Sr同位素组成最理想的样品 ,用之建立的 87Sr/ 86Sr变化曲线最具全球对比意义。
短句来源
     In order to study the internal dynamic characteristics and its external effects, especially their relations, four parts are analyzed about the hydrothermal system: the spatial structure of the hydrothermal circulation, the heat transmitting process, the chemical composition of the hydrothermal fluids, the implication between hydrothermal activities and the extreme life.
     开展现代海底热水活动的系统性研究,应注重将热水循环的内部动力学机制和热水活动所引发的外部环境效应相结合,为此我们把它初步展开为:热水循环的空间组构研究、热量输导作用研究、热水流体的化学成分研究、热水活动与极端生命的关系研究以及热水活动的生命周期研究等5个方面,分别解析其内部特征以及引发的环境效应。
短句来源
     On the basis of the regional geological structure and the geochemistry and spatial distribution of the products of the hydrothermal circulation systim in the Tengchong-Lianghe geothermal field, this paper analyses the constraints of the hot spring-type gold mineralization, such as the water source, thermal source, fracture systems, hydrothermal circulation system, drain vents and gold mineralization degree.
     本文从研究腾冲-梁河地热区区域地质构造环境和热液循环系统产物的地质、地球化学特征入手,对热泉型金矿化作用的控制条件,金矿化强度等进行了分析,提出金沉淀的最重要机制是含矿热液的沸腾作用。
短句来源
     Remelting magmatism,hydrothermal circulation drived by heat from granitic bodies and concentration of water in thermal fluid may be the most important factors to mineralization of gold.
     重熔岩浆作用,热驱动下流体循环和含矿热液中水的浓缩(收缩),是胶东金矿得以形成的主要原因。
短句来源
     The variation of REE compositions of different massive sulphides is a result of hydrothermal fluid-rock interaction and the mixing of hydrothermal fluid and seawater in different proportions in the seafloor hydrothermal circulation system.
     块状硫化物样品之间稀土元素组成的变化是由于热液流体-岩石的相互作用以及海水和热液流体不同程度混合的结果。
短句来源
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  hydrothermal circulation
Modeling Permeability Changes Caused by Hydrothermal Circulation
      
We find that when a reservoir experiences BPD conditions during part of its lifetime the lower reservoir becomes impermeable and a hydrothermal circulation system is only present in the upper part of the reservoir.
      
Hydrothermal Circulation of Seawater through Hot Vents and Contribution of Interface Chemistry to Prebiotic Synthesis
      
The source of hydration is the ridge axis hydrothermal circulation, suggesting hydrothermal/magma interaction at temperatures above the gabbro solidus.
      
Furthermore, after spreading ceased 32-26 my ago, ongoing passive hydrothermal circulation was accompanied by the precipitation of alteration products in open void spaces, thereby decreasing the porosity and increasing the velocity.
      
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On the basis of spilite which is cheractereized by the (high-temperature) fabrics of basalt and the (low-temperature) greenschist phase mineral assemblages, this article deals with the metamorphic origin of spilite, and in combination with the following recently investagations and experimental datum.1. The albite and albitization in spilite and their relationship to metamorphic phase.2. The experimental investigation of the albitization of plagioclase.3. The peristerite miscibility-gap.4. The experimental studies...

On the basis of spilite which is cheractereized by the (high-temperature) fabrics of basalt and the (low-temperature) greenschist phase mineral assemblages, this article deals with the metamorphic origin of spilite, and in combination with the following recently investagations and experimental datum.1. The albite and albitization in spilite and their relationship to metamorphic phase.2. The experimental investigation of the albitization of plagioclase.3. The peristerite miscibility-gap.4. The experimental studies of the seawater basalt interaction and oceanic altered basalts.5. The characteristices of petrologic chemistry and geochemistry of spilite, etc.It has been held that spilites are the low-temperature and low-metamorphic hydraded-basaltic rocks, that formed by the hydrothermal circulation seawater reaction with basalts. The term "spilites" are included oceanic ridge basalts, arc basalts, interplate basalts formed in different setting. That is to say, the spilite connot represent a single rocks, that are coused by spilitization of the different basaltic rocks in the low-temperature alteration and low-gradge metamorphism.The study of petrologic chemistry and geochemistry of altered basalts in oceanic and intracontinental fold belts permits us to utilize the apparently lithological similarity and to model of the modern oceanic crust. The mineralogy of spilite with the extentive development of secondary phase clearly suggest that a proportion of the chemical variation is due to secondary processes of the seawater-basalts reaction. The experimental result of seawater-basalt reaction also indication that a number trends, which may provide addition insight into the chemical and mineralogic change occur as an evolved hydrothermal fluid along with a temperature gradient on the oceanic floor. At the end of the circulation seawater system may become rich in element leached from basalt at higher temperature, and the altered basalt would show the elemental exchange trencs oposits. Such variation has been interpreted in origin of spilite. The immobile element study of spilite suggest that the term be used to cover all low altered and low metamorphic hydrous mineral facies with a high sada content or secondary sada plagioclase,which have suffered from zeolite-greenschist phase metamorphism of basalts.

本文以细碧岩的绿岩相(低温)矿物组合和玄武岩(高温)的岩石组构特征为基础,结合细碧岩中的钠长石和钠长石化作用及其与变质相的关系、斜长石钠长石化作用的实验研究、海水—玄武岩反应实验和洋底变质作用、晕长石混溶间隙以及岩石化学和地球化学等最近一些研究资料,研讨了细碧岩的变质成因。认为细碧岩是由热的循环海水与玄武岩反应所产生的低温蚀变和低级变质作用的水化玄武质岩石,其原始玄武质岩石包括在不同构造背景下,如洋中脊玄武岩、岛弧玄武岩和板内玄武岩,并不代表某种单一的岩石,而是不同玄武岩质岩石的细碧岩化作用的产物。

Granite magmatism and the associated metallogeny for which Jiangxi Pro- vince is renowned are considered in relation to a plate tectonic model which envisages the suturing of three separate continental fault blocks or plates which are thought to have existed as separate continental plates until the Permian, namely the Sino-Korean, Yangtse and South China Plates. This was followed by the cratonisation of the continental landmass of south- eastem China and the developmemt of the southeastern plate margins of...

Granite magmatism and the associated metallogeny for which Jiangxi Pro- vince is renowned are considered in relation to a plate tectonic model which envisages the suturing of three separate continental fault blocks or plates which are thought to have existed as separate continental plates until the Permian, namely the Sino-Korean, Yangtse and South China Plates. This was followed by the cratonisation of the continental landmass of south- eastem China and the developmemt of the southeastern plate margins of the new continent in the circum-Pacific zone. The post-suture magmatic intrusions were emplaced during tbe cratonising event ard their magma type and associated ore deposits are shown to vary sys- tematcally in relation to destructive plate margi ns which are thouht to have formed along all the plate boundaries between the continental plates. The granitic intrusions range from more proximal porphyires of Cu, Cu-Mo and W-Cu type to more distal granites of W-Sn-F-U-Nb-REE type. All of these intrusions, which are strongly discordant, have well developed thermal aureoles and range in age from Indosinian to Yanshanian (but mainly the latter), were intruded along major lithospheric fracture zones, with sinistral strike slip. These metallogenic granites, which were all intruded postectonically or after the suturing events, are considered to be essentially of juvenile magmatic ori- gin. Such a model helps to account for the well developed metallogeny of Jiang- xi Province which yields Cu (Mo-W) porphyries distrubuted along both the Limits and South China plates. Four such zones maybe distinguished within the boundaries of the province. More distally from the destrucive margins W-Sn-F (U-Nb-REE) granites are intruded in the central zones of both plates, and these are also associated with major ore deposits, espeoially where the granites are intruded into lower Palaeozoic low-grade metamorphic basement which provided abundant fluids for hydrothermal circulation systems. The Sino-Korean-Yangtse-South China Plate boundaries are therefore es- sentially of Andean type and they can also be closely compared with those pre- viously proposed to account for the magmatism and metallogeny of the British Caledonides by Simpson et al, Plant et al and British Hercynides by Watson. Fowler and Simpson.

本文以三板块构造模式解释江西省成矿作用的发展。认为中朝、扬子、华南三板块的边缘类似于安第斯型,它们与辛普森等人研究过的英国加里东地区、海西地区的岩浆作用和成矿作用完全可以对比。

On the basis of the regional geological structure and the geochemistry and spatial distribution of the products of the hydrothermal circulation systim in the Tengchong-Lianghe geothermal field, this paper analyses the constraints of the hot spring-type gold mineralization, such as the water source, thermal source, fracture systems, hydrothermal circulation system, drain vents and gold mineralization degree. The author considers the boiling of ore solutions as the dominant gold precipitation mechanism...

On the basis of the regional geological structure and the geochemistry and spatial distribution of the products of the hydrothermal circulation systim in the Tengchong-Lianghe geothermal field, this paper analyses the constraints of the hot spring-type gold mineralization, such as the water source, thermal source, fracture systems, hydrothermal circulation system, drain vents and gold mineralization degree. The author considers the boiling of ore solutions as the dominant gold precipitation mechanism and the frequent fracturing and supercritical high temperature and high-pressure nature of the hydrothermal solutions as the main impetus of boiling and circulation, The geological-geochemical features of the "Rehai" second-order hydrothermal system can correlate with the model of hot spring-type gold deposits and provided a good environment for the formation of this type of gold deposit. The author predict, the possible existence of gold orebodies within 400 m of the surface, with a gold resources of 79 tons.

本文从研究腾冲-梁河地热区区域地质构造环境和热液循环系统产物的地质、地球化学特征入手,对热泉型金矿化作用的控制条件,金矿化强度等进行了分析,提出金沉淀的最重要机制是含矿热液的沸腾作用。沸腾作用和热液循环的最主要的动力足频繁的断裂构造活动和热液本身具有的超临界高温、高压性质。指出“热海”二级热液循环系统表现的地质、地球化学特征与热泉型金矿化模式完全可以对比,是该类型金矿生成的良好环境。预测地表以下400m范围内有矿体存在。

 
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