发现并填绘出前寒武纪地层单元。
The Precambrian stratigraphic unit has been found and mapped.
被后寒武纪地台沉积盖层不整合覆盖。
It is overlain unconformably by the post Cambrian platform cover.
内部遗传因素是还关键的在寒武纪爆炸。
Internal genetic factors were also crucial in the Cambrian explosion.
寒武纪发生了另一次辐射。
环斑花岗岩是发育于前寒武纪的一种特殊岩石。
构造地层学方法是变质岩，尤其是前寒武纪变质岩地区地层研究的有效方法。
Structure-stratigraphic method is an effective method for stratigraphic study in Precambrian metamorphic rock area.
构造地层学方法是变质岩，尤其是前寒武纪变质岩地区地层研究的有效方法。
Structure-stratigraphic method is an effective method for stratigraphic study in Precambrian metamorphic rock area.
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