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. |
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