Ages for Site 113-689 from Barker et al. (1988a, doi:10.2973/odp.proc.ir.113.106.1988), Spiess (1990, doi:10.2973/odp.proc.sr.113.182.1990), and Mead and Hodell (1995, doi:10.1029/94PA03069). Ages for 113-690 from Barker et al. (1988b, doi:10.2973/odp.proc.ir.113.107.1988). Ages for Site 162-982 from Jansen et al. (1996, doi:10.2973/odp.proc.ir.162.104.1996). Ages for Site 177-1090 from Gersonde et al. (1999, doi:10.2973/odp.proc.ir.177.105.1999) and Channell et al. (2003, doi:10.1130/0016-7606(2003)1152.0.CO;2).