In the Triassic-early Jurassic, the emplacement mechanism of monzonitic granite and orthoclase granite is dominated by tectonic extension and the diapirism is strong.

• 晚三叠世-早侏罗世二长、正长花岗岩体就位过程中构造扩展机制起主导作用，岩浆底辟作用也较强；