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在党提出“以鋼为綱,为鋼而战”的英明号召后,笔者到四川大邑县境内,檢查矿点,发現二叠紀鉄矿分布較广,出露較多,价值大。矿区地質特征一、地层:矿区在大地構造單元上处于龙門山准
After the party proposed the call of “taking steel as the key link and fighting for steel”, the author went to Dayi County in Sichuan Province to inspect the ore spots and found that Permian 鉄 ore is widely distributed and exposed with great value. Geological characteristics of a mining area, strata: mining area in the tectonic units in the Longmen Shan