白云鄂博群、渣尔泰群与辽北燕山中晚元古宙地层对比

渣尔泰群、白云鄂博群与辽北汛河流域中晚元古宙地层中陆源碎屑普通较多，三者沉积序列相同岩石组合相似含有相同的叠层石组合，为靠近古陆边缘同沉积断裂活动较强的环境形成的。它们与燕山地区中晚元古宙地层均属地台沉积盖层，可以对比。所以燕山中晚元古宙地层划分标志对渣尔泰群、白云鄂博群划分对比。

Stratigraphic Correlation of Middle-Late Proterozoic Era Bavunebo,Chaertai with North Lao Yanshan Group

There are a good deal of land-derived organic clastic rocks in middle-late Protero.zoic laver of Chaetai.Bayunebo and Xun river of North Lao. Three of them sedimentarysequence,rock assemblage,stromatolites association are very similar and are formed astrong active environment near the old epicontinental synchrpnous deposits fault.Thethree grodp:tratum with middle-late proterozoic layer of Yanshan area all blong to piat-form sedimentary cover.They can correiate each other The middle-iate proterozoic layerof Yanshan classificatlon evidence can correlate with Chaetai,Baiyunebo group.