1) Early Paleoproterozoic Era
古元古代早期
2) Early Mid Proterozoic
中元古代早期
3) Early Late Proterozoic Era
晚元古代早期
4) Early Proterozoic
早元古代
1.
Metallogenic Conditions of Magnesite and Talc Deposits in Early Proterozoic Mg-rich Carbonate Formations, Eastern Liaoning Province;
辽东早元古代富镁质碳酸盐岩建造菱镁矿和滑石矿床成矿条件
2.
Characteristics of the Early Proterozoic Volcanic Rocks and Its Dynamic Background of Formation in the Liaodong Area;
辽东地区早元古代火山岩特征及其形成的动力学背景
3.
Two Types of Early Proterozoic Metamorphism andIts Tectonic Significance in Eastern Liaoningand Southern Jilin Areas;
辽东-吉南地区早元古代两种类型变质作用及其构造意义
5) Paleoproterozoic
早元古代
1.
Paleoproterozoic stratigraphic sequence in the Wutai Mountain area;
五台山区早元古代地层层序探讨
2.
This Paleoproterozoic model age is interpreted as crystallisation time of the carbonatite dyke.
对白云鄂博稀土 -铁 -铌矿矿区一火成碳酸岩内锆石 U - Pb年龄进行了测定 ,五颗锆石测定数据点拟合直线与谐合线的上交点年龄为 2 0 70± 33Ma,表明白云鄂博矿区火成碳酸岩脉的侵入时代最早可以追溯到早元古代 ,该年龄与矿区内正长岩和英云闪长岩锆石年龄等接近 ,构成了形成于裂谷环境的白云鄂博早元古代碱性岩 -碳酸岩杂岩
3.
Zircon U-Pb ages of meta-basalt and meta-rhyolite indicate that the Luliang Group was formed in the Paleoproterozoic and that bimodal volcanic rocks of the Upper Luliang Group erupted at about 2100 Ma.
吕梁群上部的双峰式火山岩喷发于大约2100Ma前,表明吕梁群形成于早元古代。
6) Late Mesoproterozoic-Early Neoproterozoic
中元古代晚期-新元古代早期
补充资料：榉木四屉书桌(清代早期)
由明式帐桌书桌进化而来，并有外来造型影响的痕迹，是近现代办公用桌的初形。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条