AUTHOR=Yin Shiyan , Yao Aidong , Cheng Jianzhong , Lei Chuang , Wang Zhaosheng , Zhang Zhenguo , Zhang Ying , Wang Yu , Han Xiaoying , Ma Zhigang TITLE=Mineralogical and geochemical characteristics of the third member of Palaeogene Dongying formation in the Nanpu Sag, Bohai Bay Basin: implications for controlling on organic matter accumulation JOURNAL=Frontiers in Earth Science VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2024.1525594 DOI=10.3389/feart.2024.1525594 ISSN=2296-6463