新元古代(符号NP)是地质年代中的一个代，开始于同位素年龄1000百万年(Ma)，结束于542.3Ma。新元古代属于前寒武纪元古宙，上一个代是中元古代，下一个代是古生代。新元古代期间出现化石。
扬子地块西缘新元古代岩浆活动非常强烈，花岗岩广布。
Neoproterozoic magmatic rocks, especially granitic intrusions, are widespread in the western margin of the Yangtze craton.
哈马迪金矿床位于苏丹北部阿拉伯-努比亚地盾新元古代绿岩带内。
Hamadi gold deposit is located in the Neoproterozoic greenstone belt of the Arabian-Nubian Shield in North Sudan.
这一构造-岩浆作用暗示着松嫩地块北缘在新元古代板块构造体制就开始运行。
The tectonic magmatism suggests that the plate tectonics had operated in the north margin of Songnen Massif in the Neoproterozoic.
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