XIA Peng, FU Yong, YANG Zhen, GUO Chuan, HUANG Jinqiang, HUANG Mingyong.2019. Relationship between Sedimentary Environment and Organic Matter Accumulation of Niutitang Black Shale in Zhenyuan, Northern Guizhou[J]. Acta Geologica Sinica(),93(z2):323-324