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一、前言辽东前寒武纪大石桥组是由日人斋藤林次在1938年建立的辽河系大石桥统演化而来的。1958—1961年长春地质学院在本区开展了1:20万区测工作,提出了较系统的划分方案。把大石桥组置于太古界下辽河群的盖县组之下,浪子山组之上。此后至今二十余年,通过区域地质填图,普查找矿以及地层题研究和编制区域地层
I. Preface Liaodong Precambrian Dashiqiao Formation was evolved from the Dashiqiao system of the Liaohe River founded by Japanese Saito Lin in 1938. 1958-1961 Changchun Institute of Geology in the region to carry out the 1: 200,000 regional testing work, put forward a more systematic program of division. The Dashiqiao group is placed under the Gaixian Formation of the Lower Liaohe Group in the Archeology and above the prodigious group. Since then more than 20 years, through the regional geological mapping, census prospecting and stratigraphic study and preparation of regional stratigraphy