杨家杖子杂岩体中的二长闪长岩代表一种母岩浆,它是燕山早期库拉板块向欧亚板块下俯冲所产生的,并汇聚上升的安山质岩浆。

• Mesozoic monzodiorite in Yangjzazhangzi represents a mother magma which was an andesitic magma generated by the subduction of the Kula plate underneath the Eurasian one, and then assembled and uplifted to a high level.