黔中瓮安早震旦世磷块岩的形成环境及成因机制*
杨海英1,2, 肖加飞1, 胡瑞忠1, 夏勇1, 何洪茜1,2

Formation environment and metallogenic mechanism of Weng'an phosphorite in the Early Sinian,Central Guizhou Province
Yang Hai-Ying1,2, Xiao Jia-Fei1, Hu Rui-Zhong1, Xia Yong1, He Hong-Xi1,2
瓮安磷矿大塘矿区地质略图(据贵州省地质局,1972)