一种原始岩浆上涌离开源区后,由于物理化学条件和围岩物质成分的变化,岩浆不断进行演化,最后可形成不同系列的岩类。近年来,稳定同位素在探索岩浆成因方面有所进展,证明同化混染作用是成岩过程中的地质作用。经研究证明,安徽滁县中生代火山岩系的同化混染作用对岩浆演化起了重要作用(齐进英,1982)。 After an upwelling of the original magma left the source zone, the magma continuously evolved due to changes in the physico-chemical conditions and the composition of the rock mass. Finally, different series of rock masses could be formed. In recent years, stable isotopes have made some progress in the exploration of magmatic origin, proving that assimilation and contamination is a geological process in diagenesis. The study shows that the assimilation and contamination of the Mesozoic volcanic rocks in Chu County, Anhui province played an important role in the magmatic evolution (Qi Jinying, 1982).