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本文介绍了尖晶石二辉橄榄岩深源包体的矿物成份和岩石特征,认为,镁橄榄石与古铜辉石中含有次生熔融包裹体。碱性橄榄玄武岩中的镁橄榄石大多数为地幔岩残晶,属含铝较高的碱性橄榄玄武岩,具有高硅、高镁、高铝、高碱的复杂性与特殊性。 尖晶石二辉橄榄岩局部熔融成玄武岩浆的条件是高温减压。有的系原始地幔岩,有的系地幔岩熔出玄武岩后的难熔残留体。
In this paper, the mineral composition and rock characteristics of deep-source inclusions in spinel lherzolites are described. It is considered that forsterite and alluvial contain secondary melt inclusions. Most of the olivine in basaltic olivine basalt are mantle rock residual crystals, which are alkaline olivine basalts with high content of aluminum. They have the complexity and particularity of high silicon, high magnesium, high aluminum and high alkali. Spinel lherzolite locally melted into basalt magma conditions are high temperature decompression. Some of the original mantle rock, and some mantle rock melt after the basalt refractory residue.