摘要
本文通过岩浆粘度、密度、不混溶分离速度及岩浆沿裂隙上升速度等的计算,论证了黄山杂岩体第二侵入期岩浆发生液态不混溶的流体动力学条件,从而推断存在一个次级岩浆房,并认为这个次级岩浆房为液态不混溶分离提供了稳定空间。在此基础上,结合地幔中硫化物的分布特点和地幔岩块底辟上升模式,提出了第二侵入期岩浆的形成演化模式。
Through calculation on viscosity and density of magma, fractionation velocity of immiscible magma and the uprise velocity of magma alone crack, this paper has proved the condition of fluid kinetic of immiscibility occurring at the second stage magma of Huangshan Complex and deduced that there is a proximate grade chamber to be considered to provide a steady space for immiscible frationation of magma. On this basis, combining the distribution feature of sulfide in mantle and the model of mantle diapir uprising, the model of formation and evolution of second stage magma has been advanced.
出处
《矿物岩石》
CAS
CSCD
1991年第1期102-106,共5页
Mineralogy and Petrology
关键词
岩浆
粘度
密度
不混溶
杂岩体
liquid immiscibility of magma, viscosity, density, fractionation velocity of immiscible magma, uprising velocity of magma
