FLUID-FLOW AND CHEMICAL-REACTION KINETICS IN METAMORPHIC SYSTEMS
FLUID-FLOW AND CHEMICAL-REACTION KINETICS IN METAMORPHIC SYSTEMS
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DOI：
10.2475/ajs.293.5.361
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发表时间：
1993-05-01
影响因子：
2.9
通讯作者：
RYE, DM
中科院分区：
文献类型：
--
作者：
LASAGA, AC;RYE, DM
变质过程中化学反应动力学的处理和作用随着流体流动、扩散和热演化的结合而发展。用一个简单的解析模型讨论了流体流动和表面反应速率的相互作用，稳态和平衡的区别，以及变质反应可能的超越。该模型是对本文第二部分的介绍，建立了一个求解与变质过程相关的温度-流体流动-化学组成耦合微分方程组的反应模型。考虑到稳定的同位素证据，我们需要考虑这样一个变质晕化学演化的动力学模型。讨论了一个通用的数值格式来处理模型的解。这一动力学模型的结果使我们能够就变质事件中控制矿物组合化学演化的因素得出几个重要的结论。
The treatment and effects of chemical reaction kinetics during metamorphism are developed along with the incorporation of fluid flow, diffusion, and thermal evolution. The interplay of fluid flow and surface reaction rates, the distinction between steady state and equilibrium, and the possible overstepping of metamorphic reactions are discussed using a simple analytic model. This model serves as an introduction to the second part of the paper, which develops a reaction model that solves the coupled temperature-fluid flow-chemical composition differential equations relevant to metamorphic processes. Consideration of stable isotopic evidence requires that we consider such a kinetic model for the chemical evolution of a metamorphic aureole. A general numerical scheme is discussed to handle the solution of the model. The results of this kinetic model allow us to reach several important conclusions regarding the factors controlling the chemical evolution of mineral assemblages during a metamorphic event.