• 基本释义

1.another is that of metamorphic peridotite +pyroxenite+gabbro (abbreviated to PPG series).
另一类则是变质橄榄岩+辉石岩+辉长岩岩石组合(简称PPG系列)。收藏指正
2.Two types of pyroxenite xenoliths are noted, namely, green Cr-and black Al-pyroxenites. All pyroxenites are websterites in which clinopyroxene is more abundant than orthopyroxene.
辉石岩包体含有绿色的Cr辉石岩和黑色的Al辉石岩包体两种类型,均为二辉岩,且多数样品中单斜辉石含量高于斜方辉石。收藏指正
3.The ages of garnet-pyroxenite of the middle-deep metamorphic series were(1,894.4±17.36)Ma,(1,846.8±58.58)Ma and three zircon dating gave a concordia 207Pb/206Pb age of(1,817±36)Ma using the SHRIMP zircon U-Pb method,indicating that it is the product of Paleoproterozoic.
利用SHRIMP法测得下伏岩系石榴辉石岩锆石的谐和207Pb/206Pb年龄为(1894.4±17.36)M a和(1846.8±58.58)Ma,并获得3个分析结果的207Pb/206Pb加权平均年龄(1817±36)Ma,其形成时代应为古元古代。收藏指正
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