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元古界 [yuán gǔ jiè]
Proterozoic
[地质] Algonkian
[地质] Algonkian
- 赣北中元古界双桥山群是一个完整的浊积扇体。
The Mesoproterozoic Shuangqiaoshan Group in northern Jiangxi appears as a complete turbidite fan. - 辽宁宽甸大西岔乡庙沟硼矿赋存于下元古界辽河群含硼变粒岩层位。
The Miaogou boron deposit occurs in granulitite of Liaohe group, lower proterozoic erathem, locating at Daxicha village, Kuandian town, Liaoning. - 主要成岩期及代表性岩类有：中元古界为片麻状花岗闪长岩-二长花岗岩，震旦纪为片理化闪长岩。
The main diagenetic stage and relevant rock types are the Middle Proterozoic assemblage of gneissoid granodiorite-adamellite and the Sinean schistosity diorates.
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