Seismic pumping—a hydrothermal fluid transport mechanism
Seismic pumping—a hydrothermal fluid transport mechanism
复制标题
DOI：
10.1144/gsjgs.131.6.0653
复制
发表时间：
1975-11
影响因子：
2.7
通讯作者：
R. Sibson;J. M. Moore;A. Rankin
中科院分区：
文献类型：
--
作者：
R. Sibson;J. M. Moore;A. Rankin
浅层地震的剪胀/流体扩散机制的结果是，地震断层后，相当大量的流体在地壳中迅速重新分布。一些中度（M5-M7）地震后沿着断层痕迹观察到的温暖地下水的涌出证实了这一点。所涉及的流体量如此之大，以至于每次地震诱发的流体脉冲都可能导致显着的热液矿化，并且该机制为与古代断层相关的热液脉沉积物的结构提供了解释，这几乎总是表明矿化是间歇性的。
A consequence of the dilatancy/fluid-diffusion mechanism for shallow earthquakes is that considerable volumes of fluid are rapidly redistributed in the crust following seismic faulting. This is borne out by the outpourings of warm groundwater which have been observed along fault traces following some moderate (M5–M7) earthquakes. The quantities of fluid involved are such that significant hydrothermal mineralisation may result from each seismically induced fluid pulse, and the mechanism provides an explanation for the textures of hydrothermal vein deposits associated with ancient faults, which almost invariably indicate that mineralisation was episodic.