Origin of siliceous rocks in the MiddleUpper Ordovician Yanxi Formation, Hunan Province and Duiershi Formation, Jiangxi Province in South China.
ZHENG Ning,LI Tingdong,CHENG Muwei
Earth Science Frontiers . 2018, (4): 86 -98 .  DOI: 10.13745/j.esf.yx.2017-12-19