Abstract: Based on the study of high resolution of sediment grain size, color reflectance and elemental stratigraphy of core BR02 dredged from the central part of the Bering Basin, we found: (1) Core BR02 provides perfect records for ice-rafted detritus (IRD) events happened since 16.3 ka Cal BP at the end of the Last Glacial Maximum including H1, OD, YD and Boreal2, among which H1 and YD are more significant. These IRD events all happened in the cold episodes or stadials, and indicated the changes in sea ice/iceberg condition in the sea and local glaciers in the surrounding lands. (2) The interval of Mn- and Ba-rich sediments at 17-25cm in the upper part of BR02 indicated water exchanges between the North Pacific-Bering Sea-the Arctic Ocean increased to the highest points during the Holocene high sea level period, which induced the circulation and seabed redox to change and marine productivity to increase in the Bering Basin; (3) the concentration of CaO, Na₂O, Sr, Zr and Na₂O/K₂O ratio indicated the IRD are derived mainly from the Yukon River drainage, and secondarily from the volcanic province including Alaska Peninsula and Aleutian Islands; Meanwhile, the gradual increase of Na₂O/K₂O ratio in the upper part of the core indicated the circulation especially the influences of the Alaska Current for sediments was enhanced since 10 ka BP.

Key words: Bering Basin, last deglaciation, ice-rafted detritus events, bottom water redox, past marine circulation