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geochemical dynamic
相关语句
  地球化学动力学
     GEOCHEMICAL DYNAMIC SYSTEM
     地球化学动力学体系
短句来源
     Water plays an important role not only in geochemical dynamic processes and geophysical fields in the Earth's upper mantle,but in the understanding of recycling of volatiles in the Earth's interior and the evolution of the planet as a whole.
     地幔中的水不但对地幔地球化学动力学、地球物理场有着重要的影响,而且对认识地球内部挥发分的再循环以及整个行星地球的演化均有着关键性的科学意义。
短句来源
  “geochemical dynamic”译为未确定词的双语例句
     A preliminary discussion on geochemical dynamic tracing of oil/gas reservoiring process—taking Dawanqi structure in Kuqa depression as an example
     地球化学动态示踪油气成藏过程初探——以库车坳陷大宛齐构造为例
短句来源
     On the basis of study on Muping - Rushan gold and lead-zinc hydrothermal deposits ofEastern Shandong Province, the paper presente a method of setting up a hydrothermal ore-forming reaction system. And following conclusions on geochemical dynamic controlling during the course of hydrothermal minerauzation are drawn: (1)The regional tectonic activities control the concentration of dispersion of elements in the ore - forming process by means of its effect on thermodynamic nature and conditions of the ore-forming reaction system.
     通过对胶东牟平—乳山热液脉状金,铅锌矿床成矿动力学控制规律的研究,说明了建立热液成矿反应体系的方法,并得出以下认识:(1)区域断裂构造活动,通过影响成矿反应体系的热力学性质和条件,控制元素的富集和分散。
短句来源
  相似匹配句对
     GEOCHEMICAL DYNAMIC SYSTEM
     地球化学动力学体系
短句来源
     DYNAMIC
     动态
短句来源
     Dynamic
     地方科技动态
短句来源
     Geochemical analysis
     地球化学分析
短句来源
     and geochemical characteristics.
     地球化学特征。
短句来源
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  geochemical dynamic
Nonlinear geochemical dynamic processes of elemental sedimentation through sea-floor fluids may be effectively reconstructed based on power spectral analyses.
      


The unification, of geochemical processes with their spatip-temporal struc tures is taken as the guiding ideology. Geological areas and geotogical bodies are considered as dynamic systems. Theory of dissipative structures is used to set up a geochemical dynamic system for Gejiu ore region.

本文以地球化学作用与其时-空结构的统一性为指导思想,将地质区域和各种地质体视为动力学体系,应用耗散结构理论,通过对云南个旧钖、多金属成矿区的研究,讨论地球化学动力学体系的建立。 作者应用马尔科夫过程理论揭示了沉积过程的地球化学旋回性,并用动力学体系分析阐明每一旋回的时间结构。花岗岩浆的分离结晶作用与对流驱动的热重力扩散作用相结合导致了岩体内痕量元素的化学分带。岩浆期后体系系由具有非线性动力学机制的复杂的反应-输运网络所构成,其拓朴结构使体系产生异常的动力学行为。通过各种物理化学参数的实验测定建立了成岩、成矿作用的动力学模型,并用计算机模拟了典型矿田内热液流体的流速场与温度场。 地球化学全过程的时间结构可以归结为热力学分枝的分支在时间上的展开或多阶耗散结构的阶梯。地球化学场的空间结构产生于耗散结构的局域化和化学波的成生与传播。成矿区域是囿于有界介质内的局域化耗散结构。不同反应前锋的差速前进从而产生不同物种的分异沉淀使成矿区域出现化学分带。成矿源区起因于某种化学反应核心或特殊的物理边界所产生的局域不均一性。 对地球化学动力学体系作进一步的研究可以揭示金属矿源学、历史地球化学与区域地球化学之间的内在联系。

Cassiterite-sulfide deposit is the principal type of ore deposits in the Gejiu ore district. In various ore fields of this ore district copper is closely associated with tin. From the center of ore formation outward and from bottom to top, a peculiar zoning of copper, tin-copper, tin-lead anti lead-zinc appears which is distinct from the zoning in Cornwall, England, and the typical geothermic zoning of Emmons. Metal-zoning of ore deposits is regarded as the spatio-temporal structure generated by dynamics of...

Cassiterite-sulfide deposit is the principal type of ore deposits in the Gejiu ore district. In various ore fields of this ore district copper is closely associated with tin. From the center of ore formation outward and from bottom to top, a peculiar zoning of copper, tin-copper, tin-lead anti lead-zinc appears which is distinct from the zoning in Cornwall, England, and the typical geothermic zoning of Emmons. Metal-zoning of ore deposits is regarded as the spatio-temporal structure generated by dynamics of ore-forming processes. It is a "self-organization" phenomenon in geochemical dynamic systems taking place under far-from-equilibrium conditions. Thereby a dynamic approach is taken to reveal the mechanisms of ore zoning. The authors set up a dynamic model for ore formation according to the physico-chemical conditions of ore formation, and then made use of computer techniques to simulate numerically the zoning of ore deposits. Investigation shows that the regular spatial zoning of copper, tin and lead appearing commonly in various ore fields in Gejiu probably resulted from multiple, intermittent and pulsatory mineralizations. The successive transports with diverse velocities along channelways of the ore-forming solutions containing different metals separated by processes accompanying pulsations, taking place under conditions of definite difference between metal concentrations in solutions and wallrocks, followed by differential deposition constitute possible dynamic mechanisms for the peculiar, primary patterns of metal-zoning of cassiterite-sulfide deposits in Gejiu ore district.

个旧成矿区锡石-硫化物矿床内铜、锡密切共生,具有特殊的原生金属分带。本文采用动力学方法,利用计算机技术对该分带进行数值模拟。研究指出,矿床分带可能是由于多次矿化活动间歇、脉动式地相继发生而产生的。伴随成矿脉动所析离的含多种金属的成矿溶液,在其中的金属浓度与围岩中的浓度的特定比差下,依次沿断裂通道的差速输运继之以分异沉淀是个旧成矿区锡石-硫化物矿床内特殊原生金属分带形成的一种可能的动力学机制。

On the basis of study on Muping - Rushan gold and lead-zinc hydrothermal deposits ofEastern Shandong Province, the paper presente a method of setting up a hydrothermal ore-forming reaction system. And following conclusions on geochemical dynamic controlling during the course of hydrothermal minerauzation are drawn: (1)The regional tectonic activities control the concentration of dispersion of elements in the ore - forming process by means of its effect on thermodynamic nature and conditions of the ore-forming...

On the basis of study on Muping - Rushan gold and lead-zinc hydrothermal deposits ofEastern Shandong Province, the paper presente a method of setting up a hydrothermal ore-forming reaction system. And following conclusions on geochemical dynamic controlling during the course of hydrothermal minerauzation are drawn: (1)The regional tectonic activities control the concentration of dispersion of elements in the ore - forming process by means of its effect on thermodynamic nature and conditions of the ore-forming reaction system. (2) During hydrothermal mineralization the activites of ore -hearing fracture can be divided into two stages: brittle splitting and brittle -tough tensing stages which create characteristically different geodynamic condition on geochemical thermodynamic system of the ore - formation. (3) The hydrothermal ore -forming reaction system is an open dynamic system. At the brittle splitting stage the system is strongly supersaturated and unequlibrated, that quicken and enhance the crystallization and the differentiatie n of ore -forming fiuid. And at the brittle-tough tensing stage, the ore -forming system is in a weak supersaturated state, gradually reducing of the temperature and pressure, the crystallization of ore -forming material is slowly, and it can be re-garded as equilbrated state. (4) In the later stage of hydrothermal evolution, as a result of crystallization of SiO2 and FeS2,the gold is enriched in the residual ore-forming solution. The fracture activity in this stage is in the pulsating state, that leads to the crush of pyrite ore and it fill up with enriched gold solution forming highgrade gold ore in the form of crys-tal - interface and fractionation gold. Therefore highgrade mineral ore in the hydrothermal pro-cesses is formed as a result of integrating of the thermodynamic evolution of hydrothermal system with the favorable tectonic dynamic condition, and it could be called "coupling" process.

通过对胶东牟平—乳山热液脉状金,铅锌矿床成矿动力学控制规律的研究,说明了建立热液成矿反应体系的方法,并得出以下认识:(1)区域断裂构造活动,通过影响成矿反应体系的热力学性质和条件,控制元素的富集和分散。(2)热液成矿过程中容矿断裂活动可划分为两种作用方式:脆性破裂和韧—脆性张开,构成热液成矿的两种构造动力学环境。(3)热液成矿反应体系是一种开放的动态的热力学体系。断裂的脆性破裂阶段,使体系处于强烈的过饱和状态,矿质在远离平衡状态下快速结晶,加剧物质分异;在脆—韧性张开阶段,矿质在接近平衡态体系中缓慢晶出。(4)热液演化晚期,金在残余溶液中富集;当断裂再次发生构造脉动震颤时,早期形成的块状黄铁矿矿石碎裂,富金溶液充填其中,形成含裂隙金和晶隙金的富矿石。成矿体系热力学演化与构造动力学条件有利的匹配控制着富矿石的形成。

 
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