未变形未变质的前寒武纪岩墙群的存在表明前寒武纪华北克拉通已经具有了刚性板块的性质。
The existence of the undeformed and unmetamorphed Precambrian dike swarms shows that the Precambrian North China Craton had been a rigid plate.
镁铝榴石形成于滇东南晚第三纪岩简状的玄武质次火山角砾岩中，角砾岩成分复杂，其中包含有镁铝榴石和铬透辉石等可作宝石材料利用的角砾和晶屑。
The rubbles and crpetals of prrope and chrome-diopsidewhich can be used as gem materials are found in the breccias whose component is very complex.
几位CTAM营地的工作人员安排了为期一天的行程，到营地东侧的亚历山德拉皇后山脉露营并勘察暴露在外的二叠纪沉积岩中的舌羊齿化石。
A few of the CTAM staff organized a day trip to the mountains of the Queen Alexandra Range east of camp to look at the Glossopteris fossils preserved in the Permian sediments exposed there.
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