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1936—1942年,孙建初在新民堡(即惠回堡)创立惠回堡系。嗣后,王尚文(1946—1949年)在赤金堡创立赤金堡系,并将原来的惠回堡系细分为上惠回堡系和下惠回堡系,认为惠回堡系在上,赤金堡系在下。1971年前,虽然各家对地层的划分、对比和时代意见方面存在一些分歧,但他们长期应用的划分与对比意见基本上是以前孙建初、王尚文建立的地层系统概念。1974年,笔者与甘肃省区测二队八分队协作,共同详细观察并系统采
From 1936 to 1942, Sun Jianchu founded the Hui Hui Bao Department in Xin Min Bao (Hui Hui Fort). Subsequently, Wang Shangwen (1946-1949) founded the Chikumberg Department in Chikumberg and subdivided the original Huisuibao system into the Huihui Fort system and the Huihui Fort system, and considered the Hui-Hui Fort system as the " Fort Department in the next. Before 1971, although there were some differences in stratigraphic division, contrast and opinion of the times, their long-term application of the division and contrasting opinions was basically the stratum system concept previously established by Sun Jianchu and Wang Shangwen. In 1974, the author collaborated with the Eighth Detachment of Gansu Province to conduct a detailed observation and systematic collection