supported by the Pilot Project of the National Knowledge Innovation Program of the Chinese Academy of Sciences (KZCX2-YW-221);the National Natural Science Foundation of China (40906030,40976026and40906038);the National Basic Research Program of China (2007CB815903)
Two sediment cores, MD06-3050 and MD06-3047, were analyzed to study the Quaternary calcareous nannofossil and microtektite records. We dated bioevents and the microtektite impact event by calibrating with oxygen isoto...