中元古代（Mesoproterozoic，符号MP）是地质时代中的一个代，开始于同位素年龄1600Ma，结束于1000Ma。
中元古代与新元古代两个不同方向的地震断裂带分别控制着两个时期的盆地边界。
Two seismic fault belts with different directions in Mesoproterozoic and Neoprotertozoic control the basin boundaries of the two stages respectively.
本组为评估中元古代生命状况、古环境和前显生宙生物地层提供了重要的生物信息。
This Formation provides important paleobiological information from which to assess status of Mesoproterozoic life, and to evaluate paleoenvironmental conditions and pre_Phanerozoic biostratigraphy.
形成晶体的碳质来源不均一，反映了中元古代华北陆台下地壳岩浆成分的不均一性。
Heterogenity of the carbon source implies the magma beneath the North China platform was not homogeneous at Late Mesoproterozoic.
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