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对前寒武纪绿岩带中科马提质玄武岩间的岩石化学相关关系进行了分析。得出下列结论:在一个大气压并有相当数量的长石作为共结组分参加的条件下,科马提质玄武岩岩浆的分馏作用不可能生成拉斑系列的派生熔体。拉斑玄武岩成分的残余岩浆只能是在相当于较高的压力(7—10kbar)条件下,并具有橄榄石-单斜辉石质共结组分参加时,由科马提质玄武岩岩桨的分异过程获得。
The petrochemical correlations between the Komai basalts in the Precambrian greenstone belt are analyzed. The following conclusions can be drawn: Under the conditions of atmospheric pressure with a considerable amount of feldspar as a co-junction component, fractionation of Komati-derived basaltic magma is unlikely to produce a derivative melt of the plaque series. The remnant magmas of the tholeiitic basalts can only be made at equivalent high pressure (7-10 kbar) with the olivine-clinopyroxene coalesced component being joined by a komati-basalt rock paddle Differentiation process is obtained.