在迷失的城市通风场的3万年水热活动
Gretchen L Früh-Green1, Deborah S Kelley, Stefano M Bernasconi
1Department of Earth Sciences, Eidgenössische Technische Hochschule, Zürich (ETH-Z), CH-8092 Zurich, Switzerland. gretli@erdw.ethz.ch
概括
迷失城市的热水活动已经持续了超过3万年,由蛇形化驱动. 这种地质过程是由海水与矿相互作用推动的,可以维持这样的系统可能持续数百万年.
科学领域:
- 地质化学 地质化学
- 地质地质地质地质地质地
- 海洋学 海洋学 海洋学
背景情况:
- 失落的城市热水电场是一个离轴系统.
- 蛇形化是一个关键的地质过程,涉及海水与石的反应.
研究的目的:
- 为了记录迷失城市的热水活动的持续时间和速度.
- 了解维持长期热水系统的机制.
主要方法:
- 斯特,碳和氧同位素分析.
- 放射性碳年代测定技术.
主要成果:
- 至少有3万年水热活动的证据.
- 估计的蛇形化速率为每年1.2 x 10(-4) 立方公里.
- 确定了关键因素:海水进入石,断层,膨胀和质量浪费.
结论:
- 蛇形化是迷失城水热活动的长期驱动因素.
- 这些系统可以持续几十万到几百万年.
- 这些发现与了解缓慢和超缓慢扩散环境中的类似系统有关.
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