Precambrian造句
Gneiss, a metamorphic rock, can be commonly found in
Precambrian areas.
片麻岩, 变质岩, 可以发现,在常见的前寒武纪地区.
Precambrian time for as much as eighty - five percent of all geological time.
从前寒 武 世纪以来地球地面大部分被冰川所覆盖的任何地质年代.
Late
Precambrian mafic dyke swarms are extensively developed in the central North China Craton.
华北克拉通中部广泛发育晚前寒武纪镁铁质岩墙群.
Two main glacial epochs affected both areas during the last 100 million years of
Precambrian times.
在前寒武纪的最后1亿年中，两个主要的冰川时期对两个地区都产生了影响。