一、前言为了满足国家和地方对富铁矿产资源的需要,一九七七年四月,四川省地质局以川地革【77】111号文指示,从一九七七年至一九八一年开展会东。小街、淌塘、黄坪四幅五万分之一以普查富铁矿为主的区域地质调查工作。面积1800平方公里。由于中途任务有所变动,一九七八年才正式开展工作。七八年上海会议确定“五万分之一区调可以打破国际分幅以 I. Preface In order to meet the needs of the country and the localities for the iron-rich mineral resources, in April 1977, the Geological Bureau of Sichuan Province, with the instructions of Sichuan Gechi [77] No. 111, from 1977 to 198 One year to carry out the East. Small Street, dripping Tong, Huang Ping four one in 50,000 to general survey of iron ore-based regional geological survey. Area of ​​1800 square kilometers. Due to the change of mid-mission, formal work started in 1978. The Seventh-eight Shanghai Conference confirmed that “the one-hundred-50,000th zone can break the international dividend.”