早古生代，是一个时间年代，距今5.7亿年～距今4.09亿年，包括古生代的寒武纪﹑奥陶纪和志留纪 3个纪。
早古生代花岗岩的确认对该区地质构造演化研究具有重要意义。
The identification of the Early Caledonian granites is of important significance in studying the geological tectonic evolution of the area.
华南新元古代到早古生代是扬子活动大陆边缘构造“捕获”的一个边缘海盆地，其间充填了巨厚的复理石、砂、页岩沉积。
During the Neoproterozoic to the Early Paleozoic, the South China was a marginal basin captured by the Yangtze active continental margin, filled with very thick flysch, sandstone, and shale sediments.
早古生代北祁连是一个陆间微洋盆。
North Qilian range was a intercontinental micro-oceanic basin of Early Paleozoic.
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