For AMS 14C ages, approximately 10 mg of planktonic foraminifera species (Globigerina bulloides, Globigerinoides ruber-white, Globorotalia inflata, Globigerina falconensis, Globorotalia truncatulinoides and Orbulina universa) were picked in the fraction >150 or >250 μm. AMS radiocarbon ages were calibrated using the Calib program (Stuiver and Reimer, 1993) on-line version 6.0 (http://calib.qub.ac.uk) and the Marine09 calibration data (Reimer et al., 2009). Between 0 and 10.5 cal ka BP the Marine09 dataset is based on the Intcal09 tree-ring data that was converted with an ocean - atmosphere box diffusion model to yield ocean mixed-layer ages (Hughen et al., 2004). Beyond 10.5 kyr it uses marine coral and varve data with a mean global reservoir correction of 405 years (Reimer et al., 2009).