Table T10. Age-depth control points, Hole 1240A.
Datum
Source
Age (Ma)
Top sample
(FO presence/LO absence)
Bottom sample
(LO presence/FO absence)
Age (Ma)
Depth
 
Minimum
Maximum
Core, section,
interval (cm)
Depth (mbsf)
Core, section,
interval (cm)
Depth (mbsf)
Average
Uncertainty (±)
Average (mbsf)
Average (mcd)
Uncertainty (±m)




202-1240A-
202-1240A-





Start of Emiliania huxleyi acme CN 0.08 0.08 2H-2, 75 5.76 2H-3, 75 7.27 0.08 0.00 6.52 7.87 0.76
LO Globigerinoides ruber pink PF 0.12 0.12 2H-CC, 14 12.62 3H-CC, 11 22.84 0.12 0.00 17.73 19.38 5.11
FO Emiliania huxleyi CN 0.26 0.26 3H-3, 75 16.77 3H-4, 75 18.27 0.26 0.00 17.52 19.47 0.75
FO Globigerinoides ruber pink PF 0.40 0.40 5H-CC, 15 41.92 6H-CC, 11 51.33 0.40 0.00 46.63 53.48 4.71
LO Pseudoemiliania lacunosa CN 0.46 0.46 5H-3, 75 35.76 5H-4, 75 37.27 0.46 0.00 36.52 41.82 0.76
LO Nitzschia reinholdii D 0.62 0.62 4H-CC, 8 32.27 5H-CC, 15 41.92 0.62 0.00 37.10 41.80 4.83
LO Globorotalia tosaensis PF 0.65 0.65 5H-CC, 15 41.92 6H-CC, 11 51.33 0.65 0.00 46.63 53.48 4.71
LO Nitzschia fossilis D 0.70 0.70 7H-4, 75 56.28 7H-5, 75 57.79 0.70 0.00 57.04 64.49 0.75
LO Reticulofenestra asanoi CN 0.88 0.88 8H-CC, 14 70.21 9H-1, 75 70.75 0.88 0.00 70.48 80.23 0.27
Reentry medium Gephyrocapsa CN 1.02 1.02 9H-7, 40 79.44 9H-CC, 14 79.97 1.02 0.00 79.71 88.86 0.27
FO Reticulofenestra asanoi CN 1.08 1.08 10H-CC, 9 88.73 11H-1, 75 89.75 1.08 0.00 89.24 99.28 0.51
LO Rhizosolenia matuyamai D 1.05 1.05 9H-4, 75 75.27 9H-5, 75 76.78 1.05 0.00 76.03 85.18 0.76
FO Rhizosolenia matuyamai D 1.18 1.18 11H-2, 75 91.13 11H-3, 75 92.64 1.18 0.00 91.89 102.06 0.75
LO Gephyrocapsa (large) CN 1.24 1.24 11H-7, 40 98.33 11H-CC, 8 98.82 1.24 0.00 98.58 108.75 0.24
FO Gephyrocapsa (large) CN 1.45 1.45 13H-1, 75 108.75 13H-2, 75 110.25 1.45 0.00 109.50 122.35 0.75
LO Calcidiscus macintyrei CN 1.59 1.59 14H-5, 75 124.27 14H-6, 75 125.78 1.59 0.00 125.03 138.18 0.76
FO Gephyrocapsa (medium) CN 1.67 1.67 14H-7, 40 126.94 14H- CC, 18 127.45 1.67 0.00 127.20 140.35 0.25
LO Rhizosolenia praebergonii v. robusta D 1.73 1.73 14H-CC, 18 127.45 15H-1, 10 127.10 1.73 0.00 127.28 141.35 -0.17
LO Globigerinoides extremus PF 1.77 1.77 13H-CC, 18 117.95 14H-CC, 18 127.45 1.77 0.00 122.70 141.35 4.75
LO Discoaster brouweri CN 1.96 1.96 19H-CC, 20 174.89 20H-CC, 22 184.47 1.96 0.00 179.68 200.58 4.79
FO Fragilariopsis doliolus D 2.00 2.00 19H-6, 75 173.29 19H-7, 40 174.45 2.00 0.00 173.87 194.22 0.58
LO Globorotalia exilis PF 2.15 2.15 19H-CC, 20 174.89 20H-CC, 22 184.47 2.15 0.00 179.68 200.58 4.79
LO Globorotalia pseudomiocenica PF 2.30 2.30 22H-CC, 20 203.52 23H-CC, 20 213.01 2.30 0.00 208.27 230.14 4.74
LO Globorotalia limbata PF 2.38 2.38 22H-CC, 20 203.52 23H-CC, 20 213.01 2.38 0.00 208.27 230.14 4.74
LO Globorotalia puncticulata PF 2.40 2.40 23H-CC, 20 213.01 24H-CC, 8 222.43 2.40 0.00 217.72 240.60 4.71
LO Thalassiosira convexa s.l. D 2.41 2.41 22H-4, 75 198.77 22H-5, 75 200.28 2.41 0.00 199.53 220.98 0.75
LO Globorotalia pertenuis PF 2.60 2.60 24H-CC, 8 222.43 25H-CC, 21 232.08 2.60 0.00 227.26 251.53 4.82
LO Discoaster surculus CN 2.61 2.61 28H-3, 40 253.92 28H-CC, 0 254.29 2.61 0.00 254.11 282.66 0.19

Notes: FO = first occurrence, LO = last occurrence. CN = calcareous nannofossils, PF = planktonic foraminifers, D = diatoms.