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祁连山下古生代活动带分布于甘、青两省之间,北邻阿拉善和塔里木地块,南侧与柴达木地块相连。近年来对其地层、构造及地质演化模式有不少专题论述。这个活动带具明显的线状特征,呈NWW—SEE走向,延伸千余公里。它是在下元古界基底上逐渐发展起来的下古生代地槽。其堆积物被泥盆纪磨拉石建造不整合覆盖。上古生界一般未受区域变质作用影响。这说明本区在志留纪末经加里东运动结束了活动带的历
The Paleozoic active belt in the Qilian Mountains is distributed between Gan and Qing provinces. It is adjacent to Alxa and Tarim plots to the north and Qaidam plots to the south. In recent years, many of its thematic discussion on the stratigraphy, structure and geological evolution mode. This activity with a clear linear features, was NWW-SEE direction, extending more than 1,000 kilometers. It is in the Lower Proterozoic basement gradually developed under the Paleozoic trough. Its deposits are unconformably covered by Devonian molasse. The Paleozoic is generally not affected by the regional metamorphism. This shows that the region ended the calendar of activities with the Caledonian movement at the end of Silurian