Initial Reports, Volume 206 Ms 206IR-103 Chapter 3, Table T20. Magnetostratigraphy, Site 1256. Note: o = onset, t = termination. Depth (mbsf) Age (Ma) Chron/Subchron 9.3 0.78 C1n (o); Brunhes 11.47 0.99 C1r.1n (t); Jaramillo 12.61 1.07 C1r.1n (o); Jaramillo 13.87 1.201 C1r.2r-1n (t); Cobb Mtn 14.12 1.211 C1r.2r-1n (o); Cobb Mtn 17.48 1.77 C2n (t); Olduvai 18.84 1.95 C2n (o); Olduvai 20.17 2.14 C2r.1n (t); Reunion 20.6 2.15 C2r.1n (o); Reunion 23.15 2.581 C2An.1n (t); Gauss 25.36 3.04 C2An.1n (o); Gauss (above Kaena) 25.98 3.11 C2An.2n (t); Gauss 26.08 3.22 C2An.2n (o); Gauss (above Mammoth) 26.57 3.33 C2An.3n (t); Gauss 28.52 3.58 C2An.3n (o); Gauss 32.96 4.18 C3n.1n (t); Cochiti 33.85 4.29 C3n.1n (o); Cochiti 34.8 4.48 C3n.2n (t); Nunivak 35.5 4.62 C3n.2n (o); Nunivak 36.62 4.8 C3n.3n (t); Sidufjall 37.08 4.89 C3n.3n (o); Sidufjall 37.8 4.98 C3n.4n (t); Thvera 39.7 5.23 C3n.4n (o); Thvera 49.5 5.894 C3An.1n (t) 50.75 6.137 C3An.1n (o) 51.6 6.269 C3An.2n (t) 56.41 6.567 C3An.2n (o) 71.56 7.562 C4n.1n (o) 72.87 7.65 C4n.2n (t) 76.7 8.072 C4n.2n (o) 77.05 8.225 C4r.1n (t) 77.65 8.257 C4r.1n (o) 83.33 8.699 C4An (t) 84.93 9.025 C4An (o) 86.53 9.23 C4Ar.1n (t) 86.95 9.308 C4Ar.1n (o) 88.28 9.58 C4Ar.2n (t) 89.81 9.642 C4Ar.2n (o) 90.55 9.74 C5n.1n (t) 91.62 9.882 C5n.1n (o) 92.53 9.92 C5n.2n (t)