论文部分内容阅读
喷气孔和热泉化学成份的监测可用于探测岩浆的上升或者新鲜岩浆的溢出。在加利福尼亚长谷热泉区对氢气作了监测,He、Rn 或土壤气中 Hg 的测量可能揭示了热液系统随变化过程。因此,我们可以利用 Hg 在地表环境的分布作为地热系统改变的一种指标,这个系统可能与长谷区火山口带的浅成侵入体有关。长谷区的地质长谷区的火山口是一个17×32km 的椭圓状盆地,它邻近中加利福尼亚内华达山的东部前缘,盆地在0.7百万年以前的 Bishop 凝灰岩喷溢之后形成,体积估计达500km~3。火山口形成之后,在区域中部形成了再生的流纹岩穹丘。随后在火山口的不同部位上都
Jet pores and hot springs Chemical composition of the monitoring can be used to detect the rise of magma or fresh magma spills. Hydrogen is monitored in the hot valley of Cangue, California, and measurements of He, Rn or Hg in soil gas may reveal hydrothermal system changes. Therefore, we can use the distribution of Hg in the surface environment as an indicator of the change of geothermal system, which may be related to the shallow intrusions in the Hogou volcanic belt. The geology of the Canggu area The crater of the Changgu area is a 17 × 32km oval basin adjacent to the eastern front of the Sierra Nevada, California, formed after the Bishop tuff effusion 0.7 million years ago, Up to 500km ~ 3. After the crater was formed, a regenerated rhyolite dome was formed in the middle of the area. Then on different parts of the crater