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发育于燕山地区的中元古界雾迷山组，厚１５００～３０００ｍ，形成时限１００Ｍａ左右。在这套巨厚的碳酸盐岩地层中，广泛发育碳酸盐米级旋回层序。这些米级旋回层序由以下岩相单元组成：（１）潮下高能叠层石生物层及凝块石生物丘；（２）潮间坪硅化藻席白云岩；（３）...
Developed in the Middle Paleoproterozoic Wumishan Formation in the Yanshan area, with a thickness of 1500-3000m, the formation time is about 100Ma. In this huge set of carbonate strata carbonate sequences are developed extensively. These Mi-level cycles consist of the following lithofacies units: (1) subtidal high-energy stratiform biomasses and clot bio-mounds; (2) tidal flat silicified algal mat dolomite;