1.【地】元古代[元古界](的)
1.the eon of geologic time, 2.5 billion to 570 million years ago, during which sea plants and animals first appeared
1.The Proterozoic climate was still warm and wet, but compared with that of the Archaeozoic Eon, the temperature fell a little.
元古宙的气候仍是温暖而潮湿的，但较太古宙温度有所降低。
2.Middle-Upper Proterozoic marine facies strata is one of the oldest areassedimentary rock in the northern China.
华北北部中、上元古海相地层是地球上最古老的沉积岩地区之一。
3.It is shown that the prevailing metallogenic periods of associated gold deposits of magmatic type are Proterozoic Era and Hercynian Period.
指出岩浆岩型伴生金矿床最主要的成矿期为元古代和晚古生代；
4.The gold deposit is occurred in epirock of middle-proterozoic Shuangqiaoshan, and is controlled closely by ductile shear belt.
金矿体赋存于中元古界双桥山浅变质岩内，并严格受韧性剪切带控制。
5.Probably formed in Early Proterozoic, it was rejuvenated repeatedly in late stage.
其形成时间可能为早元古代，后期又有多次复活。
6.The mother rock derived form Archaean and Early Proterozoic metamorphic rock from the north-east part of Ordos Basin.
该区延长组母岩主要来自盆地东北缘的太古代及早元古代变质岩。
7.VMS mineralization, occurred in the middle Proterozoic era, formed cupriferous source bed.
早期矿化发生于中元古代晚期，形成含铜矿源层；
8.In the resent years, the detachment style gold deposit is discovered which hosted in the middle and upper Proterozoic, e.
近年来，在该带上发现了赋存于中新元古界中的拆离带型金矿床，其中尖宝山金矿和大黄土坡金矿最为典型。
9.Let us move along Feitian cableway into the ancient forewaorld, to view and enjoy the Proterozoic wonders of the Three Gorges.
先让我们随着飞天索道，走进远古洪荒时代，观赏三峡元古奇景。
10.The mineralizing material was origin from the Morich granite magma which partial melted from Proterozoic Dabie gneissic complex.
成矿物质来源于元古宙大别片麻杂岩部分熔融而形成的富钼花岗岩浆。