黔北务正道地区铝土矿层特征及其反映的早二叠世古气候
余文超1, 杜远生1, 周琦2, 金中国3, 汪小妹4, 崔滔4

Palaeoclimate of the Early Permian: Evidence from characteristics of bauxite beds in Wuchuan-Zheng'an-Daozhen area, northern Guizhou Province
Yu Wenchao1, Du Yuansheng1, Zhou Qi2, Jin Zhongguo3, Wang Xiaomei4, Cui Tao4
黔北务正道地区代表性样品的X射线衍射图