R (the local difference in reservoir age from 400 yr in the southern Okinawa Trough) was assigned as determined from annually banded corals from Ishigaki Island (Hideshima et al., 2001):
The chronology of the uppermost 110 m of Hole 1202B (Table T2) has been established by 14C dating performed at the Rafter Radiocarbon Laboratory, Institute of Geological and Nuclear Sciences, New Zealand. More than 300 specimens of surface water–dwelling planktonic foraminifers, including Globigerinoides spp. and Orbulina universa, from the >250-µm size fraction of 10 selected intervals were dated. In addition, a scaphopod was picked from interval 195-1202B-1H-2, 36–47 cm (1.92 mbsf) for analysis (Wei et al., 2005). The reported 14C ages were converted to "calendar ages" using CALIB Program (revision 4.4) (radiocarbon.pa.qub.ac.uk/calib). In the conversion, R (the local difference in reservoir age from 400 yr in the southern Okinawa Trough) was assigned as determined from annually banded corals from Ishigaki Island (Hideshima et al., 2001):
R = 35 ± 25 yr.
The calibrated ages were then converted into thousand years before present (BP) (k.y. before AD1950). For those conventional radiocarbon ages older than 20,265 yr BP, the dates were converted to calendar ages using the polynomial equation of Bard et al. (1998):
To further establish a chronological framework for the combined stacked records, specimens of Neogloboquadrina dutertrei, a thermocline-dwelling planktonic foraminifer, were picked from the 355- to 425-µm size fraction for oxygen and carbon isotopic analyses. The upper part of the resultant 
18O profile (Fig. F5A) can be well correlated to that from the central Okinawa Trough site DGKS9603 (Li et al., 2001) in both trend and absolute values, whereas the lower part was considered to belong to the marine oxygen isotope Stage (MIS) 4 through correlation with site MD972142 in the South China Sea (Wei et al., 2003b). As a result, the bottom of Hole 1202D is estimated to be ~68 ka (Wei et al., 2005). This conclusion was also supported by Chang et al. (2005), who correlated the oxygen isotope stratigraphy at Site 1202 with that of IMAGES core MD 12404 from the central Okinawa Trough (Fig. F5).
