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Updated: Jun 28, 2025

Reservoir Condition Pore-scale Imaging of Multiple Fluid Phases Using X-ray Microtomography

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Published on: February 25, 2015

追踪流体透到海洋地中的情况,直到超高压条件

Daniela Rubatto^1,2,3, Morgan Williams^3,4, Thorsten Andreas Markmann¹

¹Institute of Geological Sciences, University of Bern, 3012 Bern, Switzerland.

Contributions to mineralogy and petrology. Beitrage zur Mineralogie und Petrologie

|April 15, 2024

概括

这项研究揭示了潜水过程中发生的两种不同的流体透事件,由变态岩石中的氧同位素所证明. 这些事件涉及道化流体流,影响海洋地中的元素转移.

科学领域:

地质化学地质化学
变态石器学变态石器学
构造学构造学构造学构造学

背景情况:

俯冲区通过流体岩石相互作用驱动元素转移.
了解沉浮地中的流体迁移动态至关重要.

研究的目的:

调查海洋地中变态流体岩石相互作用的研究.
在超高压环境中确定流体透的时间和途径.

主要方法:

对生态岩石和元沉积物的石岩和微观地质化学分析.
石榴石和的氧气同位素 (δ18O) 分析.
压力-温度 (P-T) 建模.

主要成果:

石榴石区划显示了外部流体流入的两个阶段:峰值条件 (3GPa) 和挖掘 (<1.5GPa).
石榴石和中的氧同位素变化 (18 ‰ 到 4 ‰) 表明来自马菲克脱水和蛇形岩的液体透.
透样本的度表明,由于石学透性对比,流体流动被道化.

结论:

外部流体透发生在两个不同的阶段,在沉积和挖掘.
道化流体流,而不是广泛的透,流体迁移的特点.
尽管流体透,但在元沉积物中没有观察到系统的脱碳.

关键词:

流体岩的相互作用.石榴石石榴石石榴石石榴石石榴石石榴石石榴石石榴石氧的同位素是氧的同位素.氏体是一种氏体.这就是SIMS SIMS.潜射是一种潜射.

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