Effects of volcanic activities in Ordovician Wufeng-Silurian Longmaxi period on organic-rich shale in the Upper Yangtze area, South China |
Lanyu WU,Yongchao LU,Shu JIANG,Xiaofeng LIU,Guisong HE |
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Fig. 2. Lithofacies paleogeography of Sq1 depositional period in the Upper Yangtze Block (a, c) and thickness isolines graph[ |