Table T2. Stratigraphic control around the Eocene/Oligocene (E/O) boundary.
Control
points
Age
(Ma)
Depth
(mcd)
Sedimentation
(m/m.y.)
E/O depth
(mcd)
E/O depth
(mbsf)
E/O position
in core
Site 1217:







Base C13n 33.545 29.88





Top C15n 34.655 32.83 2.7
30.29
30.03 199-1217A-4H-5, 53 cm
Site 1218:







Top NP21 32.900 238.68





Base NP21 34.000 245.03 5.8
243.30
219.84 199-1218C-17X-CC, 1 cm
Site 1219:







Base C13n 33.545 176.92





Top C15n 34.655 182.84 5.3
177.75
152.42 199-1219A-17H-4, 58 cm
Base C16n.2n 36.341 190.99 4.8
177.67
152.34 199-1219A-17H-4, 50 cm
Site 1220:







Base C13n 33.545 76.97





Top C15n 34.655 82.67 5.1
77.77
70.13 199-1220A-8H-3, 63 cm
Site 1221:







Base C13n 33.545 8.11





Top C15n 34.655 10.65 2.3
8.46
9.02 199-1221A-1H-7, 2 cm

Note: The mcd and mbsf depths of the E/O boundary (set at 33.7 Ma) are extrapolated from the rates and datum points given in the age, depth, and accumulation columns.