AUTHOR=Mao Xiaoping , Chen Xiurong , Yang Yongwei , Zheng Qiugen TITLE=Controls on organic matter enrichment and reservoir heterogeneity in lacustrine shales: insights from the Songliao Basin, NE China JOURNAL=Frontiers in Earth Science VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2025.1511598 DOI=10.3389/feart.2025.1511598 ISSN=2296-6463