Enrichment and exploration of deep lacustrine shale oil in the first member of Cretaceous Qingshankou Formation, southern Songliao Basin, NE China
ZHANG Junfeng,XU Xingyou,BAI Jing,LIU Weibin,CHEN Shan,LIU Chang,LI Yaohua
Fig. 4. Organic geochemical evolution profiles of the Qing 1 shale samples in the south part of the Songliao Basin.