古元古界

其下拆离盘为古元古界结晶基底杂岩，上拆离盘为中元古界白湖群变质岩系，滑脱拆离带为已变形的大型韧性正断层。

Its lower plate is the Paleoproterozoic crystalline basement , its hanging wall is a Middle Proterozoic metamorphic rock series and the master detachment fault is a large scale deformed low angle ductile normal fault .

前寒武纪与微生物席相关的粉砂岩岩墙&以天津蓟县古元古界串岭沟组为例

Microbial mat-related silty dykes of the Precambrian : An example from the Paleoproterozoic Chuanlinggou Formation at Jixian section in Tianjin

经笔者研究证实，西成矿田容矿地层除泥盆系外，还有古元古界。

Study proves that the host strata , besides the Devonian , include the Lower Proterozoic .

吉南地区是我国古元古界出露较好的地区之一。在吉彭的机器上，血液滴穿一个金属网，使血液暴露在氧气之中。

The southern Jilin area is one of the well-developed Palaeoproterozoic regions in China . In Gibbon 's models , blood dripped over a wire mesh to expose it to oxygen .

国内的金矿围岩以太古界和元古界的变质岩系占优势；国外则以年轻的火山岩、火山碎屑岩占首位。

In China , the predominant country rocks of gold deposits are the Proterozoic and Palaeozoic metamorphic rocks , but the young volcanic rocks and volcaniclastic rocks are put in the first place on abroad .