Volume 32 Issue 5
Aug 2018
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HUO Ruizhi, HE Duanwei. Crustal Dynamics Based on Magma Solidification[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 051201. doi: 10.11858/gywlxb.20180599
Citation: HUO Ruizhi, HE Duanwei. Crustal Dynamics Based on Magma Solidification[J]. Chinese Journal of High Pressure Physics, 2018, 32(5): 051201. doi: 10.11858/gywlxb.20180599

Crustal Dynamics Based on Magma Solidification

doi: 10.11858/gywlxb.20180599
  • Received Date: 14 Jul 2018
  • Rev Recd Date: 16 Jul 2018
  • The earth was in a molten state at the beginning of its formation.Over time, the magma on the earth's surface began to cool down and solidify, and the earth has gradually become such a trap structure.However, the cooling and liquid-solid transformation process of the earth materials continues until today.This paper presents a statistical analysis of the change of earth's length-of-day after earthquakes, and it is found that the earth's rotation speed is generally accelerated after great earthquakes.We believe that this phenomenon is caused by the cooling and solidification of the magma in the part of the mantle, which causes significant volume collapse of the lower crustal lithosphere.Thus, we set up a crustal dynamic model to explain the interaction and relative motion of tectonic plates.We believe that the dynamic genesis of earthquake and other geological activities are due to the continuous solidification of the melt in the interior of the earth which could lead to a volume shrinkage and pressure drop in the lower part of the earth's crust.The effect of gravity enhances the interaction among tectonic plates, the original mechanical structure becomes unstable, and eventually the massive rock fracture occurs, which can cause severe geological events such as earthquakes, and volcanic eruptions.This conclusion has been further validated based on the thermal and mechanical model proposed in this paper.

     

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