Iron-rich condition maintained throughout the mid-Proterozoic ocean: new evidence from the North China Craton
Hanqing Zhao1, Shihong Zhang2, Xiaoying Shi3, Chuanheng Zhang3, Yongjian Huang4 and Haiyan Li2, (1)China University of Geosciences (Beijing), State Key Laboratory of Geomicrobiology and Environmental Changes, Beijing, China, (2)China University of Geosciences (Beijing), State Key Laboratory of Biogeology and Environmental Geology, Beijing, China, (3)State Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Beijing, China, (4)China University of Geosciences, Beijing, China