Shaanxi Key Laboratory of Petroleum Accumulation Geology;
Xi’an Shiyou University;
Xi’an 710065;
China;
Shandong Key Laboratory of Depositional Mineralization&Sedimentary Mineral;
Shandong University of Science and Technology;
Qingdao 266590;
China;
School of Earth Sciences and Engineering;
Xi’an Shiyou University;
Xi’an 710065;
China;
State Key Laboratory of Continental Dynamics;
Northwest University;
Xi’an 710069;
China;
Shaanxi Provincial Land Engineering Construction Group;
Xi’an 710075;
China;
Oil and Gas Exploration Company of Shaanxi Yanchang Petroleum(Group)Co.LTD;
Yan’an;
Shaanxi 716000;
China;
carbonate concretion; phosphate mineral; upwelling; paleoenvironment; lacustrine source rock; Ordos Basin;