摘要
阿牙登组是原1∶20万区调建立的地层单位,置于白云鄂博群上部。长期以来地质工作者没有在该地层中发现"大化石"。笔者在呼吉尔图西阿牙登组建组剖面上系统采集了微体古生物化石,首次在该地区发现了藻类化石,确定地质时代为早寒武世。该时代只能代表阿牙登组本身,应将其从白云鄂博群中剔除。
Ayadeng formatin that located in upper Baiyunebo Group is the stratum unit when the original 1∶200000 regional geological survey is developed. Macrofossils of the stratum aren't collected for a long time. The microfossils are systematically collected where standard section located in the west of Hujiertu. Algae fossios are discovered the first time in the area, and the geological time are supposed to be early Cambrian Epoch. The time only presents Ayadeng itself, and it can be taken apart from Baiyunebo Group.
出处
《内蒙古地质》
2002年第3期10-13,20,共5页
Geology of Inner Mongolia
关键词
阿牙登组
藻类化石
白云鄂博群
呼吉尔图
早寒武世
Ayadeng formation
algae fossils
Baiyunebo Group
Hujiertu
early Camrian Epoch
