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本区铁镁质超基性岩由橄榄石和透辉石组成的单辉橄榄岩及橄榄单辉岩构成,M/F值为3.5-5.8。造岩矿物橄榄石和透辉石中的原生全结晶化硅酸盐熔体包裹体的发现,证明该类岩石为岩浆成因。透辉石中的熔体包裹体的均一化温度为1200-1250℃。主要造岩矿物与其包裹体中晶相子矿物的种类和化学成分相似,表明成岩作用是在物理化学条件相对恒定的环境中进行,并且是在较缓慢的减压降温过程中完成。
The mafic ultramafic rocks in this area consist of peridotite and diopside composed of peridotite and olivine peridotite with M / F value of 3.5-5.8. The discovery of primary all-crystallized silicate melt inclusions in the olivine and diopside of the rock-forming minerals proved that these rocks are of magmatic origin. The homogenization temperature of the melt inclusions in diopside is 1200-1250 ° C. The main rock-forming minerals are similar to the types and chemical compositions of the crystalline minerals in their inclusions, indicating that diagenesis is carried out in a relatively constant physical and chemical environment and during the slower decompression and cooling process.