AUTHOR=Wang Jianfeng , Niu Jungang , Yang Chao , Jiang Wenmin , Li Yun , Zheng Yijun , Liao Yuhong , Feng Dingyu , Peng Ping’an , Xiong Yongqiang TITLE=Nanoindentation measurements of mechanical properties and creep behavior of Niutitang formation shale rocks, China JOURNAL=Frontiers in Earth Science VOLUME=13 YEAR=2025 URL=https://www.frontiersin.org/journals/earth-science/articles/10.3389/feart.2025.1564286 DOI=10.3389/feart.2025.1564286 ISSN=2296-6463