Figure F9. Timescale used for Expedition 346 with radiolarian zones and datums through the interval 0–15 Ma. Bold = datums define zonal boundaries. Two radiolarian zones of the mid- and low-latitude Pacific Ocean are mainly applied for the marginal sea west of Japan and the East China Sea, respectively. LCO = last common occurrence, RD = rapid decrease, RI = rapid increase, FCO = first common occurrence.
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