Figure 4. A. The d13C record of Globigerina bulloides during the period 0-500 ka. The d values measured in the sapropel layers are marked by the filled circles. The sapropel numbers are those given in the Leg 161 Initial Reports (Comas, Zahn, Klaus, et al., 1996). B. The 13C record of Globigerina bulloides during the period 400-1200 ka. C. The d13C record of Globigerina bulloides during the period 1100-2000 ka.

Figure 4. A. The

¹³C record of Globigerina bulloides during the period 0-500 ka. The

values measured in the sapropel layers are marked by the filled circles. The sapropel numbers are those given in the Leg 161 Initial Reports (Comas, Zahn, Klaus, et al., 1996). B. The

¹³C record of Globigerina bulloides during the period 400-1200 ka. C. The

¹³C record of Globigerina bulloides during the period 1100-2000 ka.