Dynamical Stability Of Magma Chamber Under The Modern Volcanoes In The Wudalianchi Area

The dynamical stability of magma chamber is controlled by the interior factors, e.g. activities and cooling rate of the magma chamber, and the exterior factors, e.g. the extrusion and vibration of the rocks around the chamber. The cooling and solidification and the interior movement of magma in the chamber are either independent or couple together, however, in a sense the coupling processes can better exhibit the intrinsic mechanism of dynamical evolution in the chamber. Under the certain conditions, the activities of the rocks around the magma chamber can play a crucial role in the dynamical stability of magma chamber, especially in the area with frequent crustal movement.The aim of this paper is to learn and realize the processes of the magma chamber of Laoheishan and Huoshaoshan volcanoes, Wudalianchi Area. On the basis of the fieldwork of the two volcanoes, and the principle and method of tectonics, geological fluid dynamics, volcanology and non-linear dynamics, the cooling and solidification and the convection of magma in the chamber, and the evolution of the whole properties of magma chamber (mainly pressure), have been discussed. According to the theoretical analysis and its combination with the results of fieldwork and experiment and the geochemical data that had been published, the dynamical complexity of the activities of Laoheishan and Huoshaoshan volcanoes and the intrinsic genetics of their difference on geology and geochemical component have been studied.