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传统地质学中一个褶皱幕或一个造山运动的确立是根据地层柱中的角度不整合面及其伴生的有关热事件。一个间断时间很长的角度不整合面当然不宜作为运动或褶皱幕命名的依据。吕梁运动最初命名地点在吕梁山北段的鸡儿墕附近(李四光,1939)。后来研究表明,那里的地层是寒武系霍山组角度不整合覆盖于野鸡山群(相当于滹沱群)之上。不整合面所表示的时间间隔长达十数亿年,代表了晚前寒武纪期间多次运动的叠加区。因而一些地质学家,包括有影响的地质
The establishment of a fold curtain or a orogeny in traditional geology is based on the angle of unconformity in the stratum column and its associated thermal events. Of course, a non-conforming surface with a long discontinuity should not be used as a basis for naming sports or folds. Luliang movement was originally named in the northern section of Lvliang Shan Jilu near (Li Siguang, 1939). Later studies showed that the strata there are angular unconformities of the Cambrian Huoshan Formation covering the Pheasant Group (equivalent to Hutuo Group). The unconformities show a time interval of hundreds of millions of years, representing an overlay of multiple motions during the Precambrian period. Thus some geologists, including influential geology