Fayalite-bearing quartzsyenite could represent the early fractional stage initial granitic magma derived from archean protolith in a deeper and reductive environment.
含铁橄榄石石英正长岩，代表了岩浆分离结晶初期还原条件下，太古代母岩派生的初始岩浆组成。
2
It is composed of four rock units, they are gabbro, pyroxene syenite, (quartz) syenite and syenogranite from early to late.
岩性上自早到晚由辉长岩、辉石正长岩、（石英）正长岩和正长花岗岩等四个岩石单元构成。
3
The Yefushan rock mass is mainly composed of quartzsyenite porphyry.