晚古生代(Late Paleozoic Era)显生宙古生代的晚期，约开始于4.1亿年前,结束于2.45亿年前，持续时间1.75亿年。晚古生代包括泥盆纪、石炭纪和二叠纪。
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Ma of biotite shows that the rock is formed in the middle stage of Late Paleozoic era.
卡拉麦里缝合带是北疆的一条重要界线，沿该带广泛发育晚古生代火山岩。
The exhalation-spout type deposits of the early Paleozoic era and the orogenic type deposits of the late Paleozoic to early Mesozoic era are the most important deposit groups.
早古生代时期的喷气喷流型矿床组合和晚古生代—早中生代时期的造山型矿床组合最为重要。
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