在高温下,压力对布鲁石和水之间的同位素分离的影响
1Chemical and Analytical Sciences Division, Oak Ridge National Laboratory, Post Office Box 2008, MS 6110, Oak Ridge, TN 37831-6110, USA.
概括
高压在高温下显著影响布鲁石和水之间的-同位素分离. 对同位素分离的这种压力效应对于解释地质流体和古气温数据至关重要.
科学领域:
- 地质化学 地质化学
- 矿物物理 矿物物理
- 同位素地球化学 同位素地球化学
背景情况:
- 同位素分离对环境条件敏感.
- 了解压力效应对于解释地质系统至关重要.
研究的目的:
- 实验性地确定380°C时布鲁石和水之间的-分离的压力效应.
- 将实验结果与理论预测进行比较.
主要方法:
- 实验测量了-分离的结果.
- 在380°C的恒温下,压力从15到800MPa不变.
- 分析分成因子和水密度之间的关系.
主要成果:
- 均衡的-分离率随着压力增加而增加12.4每毫升.
- 在分成因子和水密度之间观察到线性相关性.
- 实验趋势与理论研究相匹配,但规模较小.
结论:
- 在高温下,压力显著影响布鲁石-水系统中的同位素分离.
- 观察到的同位素压力效应需要在古温度和流体源解释中考虑.
- 实验数据提供了对地质环境中压力诱导的同位素变化的更精细的理解.
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