摘要
本文根据河南宜阳罗圈组发育特征和分布规律，结合华北地台西南缘罗圈组发育和分布概况，论述了其成因和成因类型，提出了罗圈组时代的归属，认为罗圈组应是大陆高原冰川活动产物。其时代应属早震旦世晚期，大体相当于南沱组。
According to the development and distribution of Luoquan Formation in Yiyang County, HenanProvince, this paper discussed the genesis and genetic type of the formation and put forward the viewpoint onits age by considering the situation at the southern border of North China Platform, and concluded that theLuoquan formation should be outcome of the glaciation of continental plateau of which the age should be inthe early Sinian, corresponding to the Nantuo Formation in the Yangtze Gorges.
