In North and Northeast China widely developed mantle-derived peridotite xenoliths, which were carried to the surface by alkali basaltic magma.

研究由玄武岩岩浆携带到地表的幔源橄榄岩包体可以获得上地幔的许多信息。

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They are formed from alkali basaltic magma that slightly melted out of continental mantle by AFC mixing in depth, especially by the fractional crystallization in shallow horizon.

它是大陆地幔低度部分熔融产生的碱性玄武岩浆，通过深部AFC混合，尤其是浅部结晶分异机制形成的。

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