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1区域地质背景长清铁矿处于阿尔金构造带中部的阿南茫崖构造混杂岩带清水泉西,北部为青藏高原北缘、柴达木地块祁漫塔格构造带,南部为塔里木地块阿尔金构造带。阿尔金南缘大断裂带从区内通过,该断裂带为一具张扭性兼左行走滑的深大断裂带、其次级断裂发育。矿区及其邻区出露地层为长城系小庙岩组斜长角闪岩和黑云斜长角闪岩等区域变质岩。区内岩浆岩发育,从超基性
1 Regional Geological Background Changqing Iron Mine is located in the middle margin of the Altyn Tagh structural anomaly belt Qingshuiquanxi. The northern part of the Qinghai-Tibet Plateau is the northern margin of the Qinghai-Tibet Plateau, the Qimantag structural belt of the Qaidam block, and the Tarim Block Altyn Tectonic Belt. The large fault zone along the southern margin of the Arjin passes through the area, and the fault zone is a deep fault zone with torsional and left-lateral strike slip, with secondary faults developed. The exposed strata of the mining area and its adjacent areas are metamorphic rocks in the Xiaomeimiao Formation such as amphibolites and biotite amphibolite in the Great Wall. Magmatic rock development in the area, from the ultrabasic