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云南某地的铜、铁矿床,位于滇中地洼列的南缘,紧靠红河深大断裂。矿体产在元古界大红山群相当会理群、下昆阳群富含钠质的火山岩建造和含火山物质的碳酸盐岩内。区内火山作用强烈旋回明显,期后有多次的火山——浅成侵入岩浆活动,其岩浆演化方向多由中酸性至基性,岩石共同的特点是Na_2O+K_2O偏高,Na_2O大子K_2O,Fe_2O_3大于FeO。在火山作用的过程中形成了较为丰富的以铜、铁为主,伴随有金、银、钒、钴、镍等元素的矿床。地洼阶段的差异块断升降运动,才使本区免于遭受数千米中生界红层的覆盖,这是本区矿床能够出露的重要地质条件,也是在本区继续找寻这一类矿床首要的构造条件。
Copper and iron deposits somewhere in Yunnan are located on the southern margin of the depression in central Yunnan and close to the deep fault of Honghe. The ore body is quite reasonable in the Dhongshan Group in the Proterozoic. The Kunyang Group is rich in sodium-bearing volcanic rocks and volcanic carbonate rocks. The volcanism in the area strongly swirled obviously. After that, there were many volcanic-shallow intrusive magmatic events. The magmatic evolution direction was mostly from acid to basic. The common features of rocks were high Na 2 O + K 2 O and large Na 2 O K 2 O , Fe 2 O 3 is larger than FeO. During the process of volcanism, a rich deposit dominated by copper and iron accompanied by elements such as gold, silver, vanadium, cobalt and nickel has been formed. The difference block in the Diwa stage was raised and lowered to prevent the area from being covered by red beds in the thousands of meters of Mesozoic, which is an important geologic condition for the deposit to be exposed in the area and is also searched for in this zone The main tectonic conditions of the deposit.