Formation process and controlling factors of tight buried-basement hill reservoirs:a case study of Weixinan Depression, Northern Beibu Gulf Basin, South China - Li, Anran; Xu, Fanghao; Fan, Caiwei; Li, Ming; Jiang, Fan; Xu, Guosheng; Xiong, Xiaojun; Zhang, Xichun; Xie, Bing (Frontiers in Earth Science, 2025)