Table T9. Age-depth control points, Hole 1238A.
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)




202-1238A-
202-1238A-





Start of Emiliania huxleyi acme CN 0.08 0.08 1H-2, 75 2.25 1H-3, 75 3.75 0.08 0.00 3.00 3.00 0.75
LO Globigerinoides ruber pink PF 0.12 0.12 1H-CC, 9 5.01 2H-CC, 23 14.96 0.12 0.00 9.99 10.29 4.98
FO Emiliania huxleyi CN 0.26 0.26 2H-4, 75 10.28 2H-5, 75 11.79 0.26 0.00 11.04 11.64 0.76
FO Globigerinoides ruber pink PF 0.40 0.40 2H-CC, 23 14.96 3H-CC, 14 24.01 0.40 0.00 19.49 20.71 4.53
FO Globorotalia hirsuta PF 0.45 0.45 3H-CC, 14 24.01 4H-CC, 17 33.54 0.45 0.00 28.78 32.35 4.77
LO Pseudoemiliania lacunosa CN 0.46 0.46 3H-CC, 14 24.01 4H-1, 75 24.75 0.46 0.00 24.38 27.96 0.37
LO Globorotalia tosaensis PF 0.65 0.65 4H-CC, 17 33.54 5H-CC, 19 43.44 0.65 0.00 38.49 43.54 4.95
LO Reticulofenestra asanoi CN 0.88 0.88 6H-1, 75 43.75 6H-2, 75 45.26 0.88 0.00 44.51 51.36 0.76
LO Rhizosolenia matuyamai D 1.05 1.05 6H-4, 75 48.28 6H-4, 100 48.53 1.05 0.00 48.41 55.26 0.13
FO Reticulofenestra asanoi CN 1.08 1.08 7H-5, 75 59.28 7H-6, 75 60.79 1.08 0.00 60.04 67.34 0.75
FO Rhizosolenia matuyamai D 1.18 1.18 7H-4, 75 57.77 7H-5, 75 59.28 1.18 0.00 58.53 65.83 0.75
LO Gephyrocapsa (large) CN 1.24 1.24 7H-6, 75 60.79 7H-CC, 1 61.66 1.24 0.00 61.23 68.53 0.44
LO Globigerinoides obliquus PF 1.30 1.30 5H-CC, 19 43.44 6H-CC, 32 52.93 1.30 0.00 48.19 54.01 4.75
LO Pulleniatina finalis PF 1.40 1.40 6H-CC, 32 52.93 7H-CC, 0 61.65 1.40 0.00 57.29 64.37 4.36
FO Gephyrocapsa (large) CN 1.45 1.45 8H-5, 75 68.79 8H-6, 75 70.30 1.45 0.00 69.55 77.55 0.75
LO Neogloboquadrina acostaensis PF 1.58 1.58 6H-CC, 32 52.93 7H-CC, 0 61.65 1.58 0.00 57.29 64.37 4.36
LO Calcidiscus macintyrei CN 1.59 1.59 9H-3, 75 75.27 9H-4, 75 76.79 1.59 0.00 76.03 82.43 0.76
FO Gephyrocapsa (medium) CN 1.67 1.67 11H-1, 75 91.25 11H-2, 75 92.75 1.67 0.00 92.00 100.40 0.75
LO Rhizosolenia praebergonii v. robusta D 1.73 1.73 9H-2, 75 73.76 9H-3, 75 75.27 1.73 0.00 74.52 80.92 0.75
FO Fragilariopsis doliolus D 2.00 2.00 11H-CC, 10 100.28 12H-1, 75 100.75 1.89 0.11 100.52 109.14 0.23
LO Discoaster brouweri CN 1.96 1.96 11H-6, 75 98.78 11H-7, 40 99.93 1.96 0.00 99.36 107.76 0.58
FO Pulleniatina finalis PF 2.04 2.04 9H-CC, 20 81.49 10H-CC, 33 91.05 2.04 0.00 86.27 93.05 4.78
LO Globorotalia pseudomiocenica PF 2.30 2.30 10H-CC, 33 91.05 11H-CC, 10 100.28 2.30 0.00 95.67 103.44 4.62
LO Thalassiosira convexa s.l. D 2.41 2.41 12H-2, 75 102.26 12H-3, 75 103.77 2.41 0.00 103.02 111.87 0.75
LO Discoaster pentaradiatus CN 2.44 2.44 13H-3, 75 113.27 13H-4, 75 114.78 2.44 0.00 114.03 124.78 0.76
LO Discoaster surculus CN 2.61 2.61 13H-5, 75 116.29 13H-6, 75 117.80 2.61 0.00 117.05 127.80 0.75
LO Nitzschia jouseae D 2.77 2.77 14H-4, 75 124.28 14H-5, 75 125.78 2.77 0.00 125.03 136.98 0.75
FO Rhizosolenia praebergonii s.l. D 3.17 3.17 18H-2, 75 159.25 18H-3, 75 160.76 3.17 0.00 160.01 176.51 0.75
LO Globorotalia margaritae PF 3.58 3.58 15H-CC, 21 138.40 16H-CC, 20 148.00 3.58 0.00 143.20 157.13 4.80
LO Pulleniatina primalis PF 3.65 3.65 16H-CC, 20 148.00 17H-CC, 25 157.44 3.65 0.00 152.72 167.70 4.72
LO Reticulofenestra pseudoumbilicus CN 3.80 3.80 20H-CC, 1 185.99 21H-CC, 1 195.26 3.80 0.00 190.63 209.09 4.63
FO Thalassiosira convexa v. convexa D 3.81 3.81 22H-5, 75 201.80 22H-CC, 1 205.01 3.81 0.00 203.41 224.04 1.60
LO Globorotalia margaritae common PF 3.96 3.96 16H-CC, 20 148.00 17H-CC, 25 157.44 3.96 0.00 152.72 167.70 4.72
FO Globorotalia puncticulata PF 4.50 4.50 28X-CC, 37 258.81 29X-CC, 24 267.03 4.50 0.00 262.92 289.85 4.11
LO Nitzschia cylindrica D 4.88 4.88 28X-3, 75 253.37 29X-3, 75 262.97 4.88 0.00 258.17 285.10 4.80
FO Nitzschia jouseae D 5.12 5.12 29X-3, 75 262.97 30X-3, 75 272.67 5.12 0.00 267.82 295.70 4.85
LO Thalassiosira miocenica D 5.84 5.84 33X-3, 75 301.67 34X-3, 75 311.27 5.84 0.00 306.47 338.15 4.80
LO Nitzschia miocenica s.s. D 6.08 6.08 34X-6, 75 315.80 35X-1, 75 317.85 6.08 0.00 316.83 349.45 1.02
FO Globorotalia margaritae PF 6.09 6.09 34X-CC, 31 317.33 35X-CC, 25 326.86 6.09 0.00 322.10 354.72 4.77
LO Thalassiosira praeconvexa D 6.18 6.18 35X-CC, 25 326.86 36X-CC, 28 336.47 6.18 0.00 331.67 365.24 4.81
LO Rossiela praepaleasea D 6.54 6.54 37X-CC, 18 345.99 38X-CC, 31 355.56 6.54 0.00 350.78 386.25 4.78
FO Thalassiosira miocenica D 6.55 6.55 36X-CC, 28 336.47 37X-CC, 18 345.99 6.55 0.00 341.23 375.76 4.76
FO Thalassiosira convexa v. aspinosa D 6.57 6.57 36X-CC, 28 336.47 38X-CC, 31 355.56 6.57 0.00 346.02 381.02 9.54
FO Thalassiosira praeconvexa D 6.71 6.71 37X-CC, 18 345.99 38X-CC, 31 355.56 6.71 0.00 350.78 386.25 4.78
LO absence interval Reticulofenestra pseudoumbilicus >7 µm CN 6.80 6.80 38X-3, 75 349.67 38X-6, 75 354.20 6.80 0.00 351.94 387.89 2.26
FO Nitzschia miocenica s.l. D 7.30 7.30 38X-CC, 31 355.56 39X-CC, 29 365.41 7.30 0.00 360.49 396.91 4.93
FO Nitzschia reinholdii D 7.64 7.64 40X-3, 75 368.97 40X-CC, 1 375.00 7.64 0.00 371.99 409.69 3.01
LO Actinocyclus ellipticus v. javanicus D 7.79 7.79 40X-CC, 30 375.00 41X-CC, 1 383.37 7.79 0.00 379.19 417.51 4.19
FO Nitzschia cylindrica D 8.07 8.07 40X-5, 75 371.97 41X-CC, 1 383.37 8.07 0.00 377.67 416.00 5.70
FO Absence interval Reticulofenestra pseudoumbilicus >7 µm CN 8.85 8.85 41X-4, 75 380.16 41X-5, 75 381.67 8.85 0.00 380.92 419.72 0.75
LO Coccolithus miopelagicus CN 10.40 10.40 45X-1, 75 414.05 45X-2, 75 415.55 10.40 0.00 414.80 456.45 0.75
LO Globorotalia fohsi s.l. PF 11.68 11.68 41X-CC, 1 383.37 43X-CC, 24 397.69 11.68 0.00 390.53 429.81 7.16

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