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1991年,笔者等应内蒙古地矿局邀请,对腮林忽洞组及白云鄂博群进行了初步踏勘性研究;在国家攀登附加项目和国家自然科学基金主任基金资助下,于1994年和1996年进行了进一步研究,获得了一些重要的发现与新的认识。 (1)腮林忽洞组剖面露头良好,被若干个大陆风化壳所分隔,可识别出7个三级层序(or-thosequence)。依岩石地层单位定义,应称其为腮林忽洞群。 (2)白云鄂博群以宽沟背斜为轴部可分为南、北两翼。腮林忽洞群以角度不整合覆于变质
In 1991, at the invitation of Inner Mongolia Bureau of Geology and Mineral Resources, the author carried out a preliminary survey on the Hetong Formation and the Bayan Obo Group. With the assistance of the National Climbing Additional Project and the National Natural Science Fund Director’s Fund, in 1994 and 1996 Conducted further research and obtained some important discoveries and new understandings. (1) The profile of the Cheolinlinglingong Formation is well exposed and separated by a number of continental weathering crusts, identifying seven or-thosequences. According to the definition of rock strata unit, it should be called the Kailin cave group. (2) The Bayan Obo Group can be divided into south and north wings by the wide-ditch anticline. Kailin cave group of non-integration of perspective over the deterioration