Geochemical characteristics and geological implications of dark shale in the second submember of the first member of the Qiongzhusi Formation, Ziyang–Weiyuan area, China

doi: 10.12090/j.issn.1006-6616.2025125

• XIE Shengyang^{1, 2 ,}  , 
• YANG Xuefeng^{1, 2 ,}  , 
• LI Bo^{1, 2 ,  ,}  , 
• ZHAO Shengxian^{1, 2 ,}  , 
• ZHANG Jian^{1, 2 ,}  , 
• ZHANG Chenglin^{1, 2 ,}  , 
• LIU Jiawei^{1, 2 ,}  , 
• ZHANG Deliang^{1, 2 ,}  , 
• HUANG Shan^{1, 2 ,}  , 
• CHEN Xin^{1, 2 ,}  , 
• LIU Yongyang^{1, 2 ,}  , 
• ZHU Ning^{1, 2 ,}  , 
• WANG Gaoxiang^{1, 2 ,}  , 
• YIN Meixuan^{1, 2 ,} 

• 1.

  Shale Gas Institute of PetroChina Southwest Oil & Gasfield Company, Chengdu 610051, Sichuan, China

• 2.

  Key Laboratory of Shale Gas Evaluation and Extraction, Chengdu 610051, Sichuan, China