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孔兹岩系在中国主要分布于华北陆台及扬子地台北缘。最近,笔者在阿尔金西段且末地区的吐拉牧场一带,在原认为是由高绿片岩—低角闪岩相变质岩组成的阿尔金群(古元古代地层?)中发现一套麻粒岩相的岩石组合,笔者初步确定其具有典型的孔兹岩系特征,并对其岩石矿物组合、地球化学特征、形成的P、T条件以及同位素年代学进行了初步的研究。 岩石学及地球化学特征 此套孔兹岩系主要由夕线石榴黑云片麻岩、石榴黑云片麻岩、含石墨夕线石榴片麻岩组成的富铝片麻岩类和透镜状或薄层状夹于这些片麻岩之中的石榴角闪二辉麻粒岩组成,并伴随有大理岩和含石榴长石石英岩。
Kondz rocks are mainly distributed in China in the northern part of Taiwan and the northern part of the Yangtze platform. Recently, I discovered a set of granule in the Altyn Tagh Formation (Paleoproterozoic strata?), Which was originally thought to consist of high-greenschist-low-amphibolite facies metamorphic rocks in the pasture area of Tullah, Lithofacies assemblage, the author initially determined its typical Khondalite characteristics and conducted a preliminary study on the rock mineral assemblages, geochemical characteristics, formed P, T conditions and isotopic chronology. Petrology and geochemical characteristics This set of khondalites is composed mainly of slender gneiss, gneiss, gneiss, gneiss, gneiss, A thin layer of garnet-hornblende-pyroxenite sandwiched between these gneisses is associated with marble and pumice-bearing feldspar quartzite.