Table T3. Radiolarian zonal boundaries, Site 1221.
Zonal
boundaries
Age
(Ma)
Hole, core, section,
interval (cm)
Depth (mbsf)
Depth (mcd)
Top
Bottom
Midpoint
±
Midpoint
±


199- 199-



RP20/19 33.47 1221A-1H-5, 45 1221B-2H-3, 22 7.19 0.74 6.29 0.40
RP19/18 34.77 1221A-1H-6, 45 1221B-2H-4, 7 8.61 0.66 7.71 0.32
RP18/17 36.96 1221A-2H-7, 43 1221A-2H-CC 19.13 0.20 19.51 0.20
RP17/16 38.12 1221A-3H-3, 46 1221A-3H-4, 46 23.21 0.75 24.09 0.75
RP16/15 40.12 1221A-4H-5, 45 1221A-4H-6, 45 35.70 0.75 37.08 0.75
RP15/14 41.39 1221A-6H-3, 45 1221A-6H-4, 45 51.70 0.75 53.08 0.75
RP14/13 43.30 1221A-7H-6, 45 1221A-7H-CC 66.02 1.07 67.40 1.07
RP13/12 44.48 1221A-9H-1, 45 1221A-9H-2, 45 77.18 0.73 79.56 0.73
RP12/11 45.89 1221A-11H-6, 45 1221A-11H-7, 45 103.70 0.75 106.08 0.75
RP8/7 52.22 1221A-12H-CC 1221C-10X-CC 127.68 13.35 128.87 12.16

Notes: * = new ages calibrated from geomagnetic reversals at Site 1220. This table is also available in ASCII.