“三门系”地层的这一名是40年以前由丁文江及瑞典人安特生命名的。在这40年过程中,曾有不少的中外专家来此进行调查和研究工作,尤其是在解放以后,伴随着三门峡水库的修建,来此研究这一问题的人也就越来越多了。但在这样长的日子里,却未得出一 The name “Sanmen” strata was named 40 years ago by Ding Wenjiang and Swedish Andersen. During these 40 years, quite a few Chinese and foreign experts came to carry out investigation and research work. Especially after the liberation, along with the construction of the Sanmenxia Reservoir, more and more people came to study the issue . But in such a long time, but did not come up with one