四川省地质局403队在会东满银沟地区进行铁矿普查时,发现通安组五段紫红包含铁变质碎屑岩系与通安组四段厚层块状白云岩之间存在着明显的沉积不整合关系。后来西南地质研究所与403队又作了进一步工作,更加肯定了这种现象的普遍性。1970年正式提出了“满银沟运动”,同时把不整合面之上的这一套沉积变质铁 When the 403 team from Sichuan Bureau of Geology and Mineral Resources conducted an iron ore census in the Yimugou area in the east of Dongmen, it found that there is obvious difference between the purplish-red metamorphic clastic rock series of the fifth member of the Tong’an Formation and the massive massive dolomite in the fourth member of the Tongan Formation Sedimentary unconformity relationship. Later, the Southwest Institute of Geology and the 403 team made further work, more affirmed the universality of this phenomenon. 1970 formally proposed the “full silver ditch movement”, at the same time on the unconformity of this set of deposition metamorphic iron