Characterizing the geomagnetic paleosecular variation at high latitudes in late Mesoproterozoic: new evidence from carbonate successions of the Jingeryu Formation in the North China craton

Hanqing Zhao1, Shihong Zhang1, Hairuo Fu2, Kunkun Yang1, Haiyan Li1, Huaichun Wu1 and Tianshui Yang1, (1)China University of Geosciences (Beijing), State Key Laboratory of Biogeology and Environmental Geology, Beijing, China, (2)Harvard university, Department of Earth and Planetary Sciences, Cambridge, United States