|
岩石学报 1998
Dynamic Analysis of Immiscible Differentiation Process of Magma
|
Abstract:
This article, based on dynamics of immiscible differentiation process of magma, analyzes the development stages of immiscible spherical phases. In the early stage when the tiny spherical phases are smaller than micron scale, they collide and merge violently, therefore,they develop rapidly and are difficult to be preserved. Meanwhile they will be reformed or destroyed by crystallization.Under the other extreme condition, the big spherical phases above meter scale are also difficult to be preserved as spheres because of fast gravitional separating, but they provide conditions for forming large scale geological body. Only millimeter to centimeter scale spherical phases, which develop relatively slowly, can be easily preserved. Micron scale spheres may be preserved in quenched volcanic matrix. According to dynamics,the differentiation process of immiscible in magma would be one of effective magmatic evolution differentiation mechanisms.