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Table T15. Biostratigraphic and magnetostratigraphic datums, Hole U1406A.

Datum tie
point 		Datum Datum type Zone/Subzone Age
(Ma) 		Depth (mbsf)
Top Bottom Mid-point
D01 T Pseudoemiliania lacunosa Calcareous nannofossil NN20 0.44 0.00 0.75 0.38
  T Discoaster brouweri Calcareous nannofossil NN19 1.93 0.75 2.26 1.51
  T Sphenolithus heteromorphus Calcareous nannofossil NN6 13.53 2.26 3.76 3.01
  T Helicosphaera ampliaperta Calcareous nannofossil NN5 14.91 2.26 3.76 3.01
  B Sphenolithus heteromorphus Calcareous nannofossil   17.71 6.23 8.71 7.47
  T Sphenolithus belemnos Calcareous nannofossil NN4 17.95 8.71 11.70 10.21
  Tc Triquetrorhabdulus carinatus Calcareous nannofossil NN3 18.28 11.70 14.45 13.08
  B Sphenolithus belemnos Calcareous nannofossil   19.03 35.07 37.21 36.14
  B Sphenolithus disbelemnos Calcareous nannofossil   22.76 72.63 75.21 73.92
  T Sphenolithus capricornutus Calcareous nannofossil   22.97 79.72 81.12 80.42
  T Sphenolithus delphix Calcareous nannofossil   23.11 79.72 81.12 80.42
  B Sphenolithus delphix Calcareous nannofossil   23.21 83.20 84.70 83.95
  T Sphenolithus ciperoensis Calcareous nannofossil NN1 24.43 98.70 100.22 99.46
  T Sphenolithus distentus Calcareous nannofossil NP25 26.44 145.95 148.04 146.99
D09 Bc Triquetrorhabdulus carinatus Calcareous nannofossil   26.57 145.95 148.04 146.99
  B Sphenolithus ciperoensis Calcareous nannofossil NP24 29.62 158.05 160.89 159.47
  B Sphenolithus distentus Calcareous nannofossil   30.00 166.95 168.45 167.70
  T Reticulofenestra umbilicus (>14 μm) Calcareous nannofossil NP23 32.02 173.77 181.70 177.74
  T Isthmolithus recurvus Calcareous nannofossil   32.49 181.73 186.08 183.91
  T Coccolithus formosus Calcareous nannofossil NP22 32.92 191.51 194.16 192.84
  T Discoaster saipanensis Calcareous nannofossil NP21 34.44 199.29 199.37 199.33
  T Discoaster barbadiensis Calcareous nannofossil   34.76 201.10 202.77 201.94
  B Isthmolithus recurvus Calcareous nannofossil NP19/NP20 36.97 221.20 221.77 221.49
  Bc Chiasmolithus oamaruensis Calcareous nannofossil NP18 38.09 221.77 225.30 223.53
  T Chiasmolithus grandis Calcareous nannofossil   37.98 221.77 225.30 223.53
  B Dictyococcites bisectus (>10 μm)* Calcareous nannofossil   40.36 233.41 234.91 234.16
D13 T Chiasmolithus solitus Calcareous nannofossil NP17 40.40 234.91 239.90 237.41
  B Reticulofenestra reticulata Calcareous nannofossil   41.66 240.53 242.30 241.42
  T Nannotetrina spp. Calcareous nannofossil   41.85 240.53 242.30 241.42
  B Reticulofenestra umbilicus (>14 μm) Calcareous nannofossil   41.94 242.30 242.47 242.39
  T Nannotetrina fulgens Calcareous nannofossil   42.87 242.30 242.47 242.39
  T Chiasmolithus gigas Calcareous nannofossil NP15c 44.12 242.47 245.11 243.79
  B Chiasmolithus gigas Calcareous nannofossil NP15b 45.49 247.60 249.10 248.35
  B Nannotetrina fulgens Calcareous nannofossil NP15a 46.29 250.45 250.79 250.62
  B Nannotetrina cristata Calcareous nannofossil   47.73 250.79 254.80 252.73
  Fasciculithus division decline† Calcareous nannofossil   56.00 254.68 255.88 255.28
  T Fasciculithus alanii† Calcareous nannofossil   56.00 254.68 255.88 255.28
  T Ericsonia robusta (>9 μm)† Calcareous nannofossil   57.10 260.44 262.84 261.64
  B Discoaster multiradiatus Calcareous nannofossil NP9 57.21 262.84 264.75 263.80
  Tc Sphenolithus anarrhopus Calcareous nannofossil     262.84 264.75 263.80
  B Discoaster delicatus† Calcareous nannofossil   57.45 264.75 265.90 265.33
  B Ericsonia robusta (>9 μm)† Calcareous nannofossil   57.54 264.75 265.90 265.33
  Tc Discoaster backmanii† Calcareous nannofossil   57.57 264.75 265.90 265.33
  B Discoaster backmanii† Calcareous nannofossil   58.28 267.19 273.94 270.56
  B Heliolithus riedellii Calcareous nannofossil NP8 58.70 267.19 273.94 270.56
  B Discoaster mohleri Calcareous nannofossil NP7 58.97 278.63 279.43 279.03
  B Sphenolithus anarrhopus† Calcareous nannofossil   59.40 278.63 279.43 279.03
  B Heliolithus kleinpellii Calcareous nannofossil NP6 59.54 279.43 280.37 279.90
D16 B Heliolithus cantabriae Calcareous nannofossil   59.60 280.37 281.03 280.70
D17 B Fasciculithus tympaniformis Calcareous nannofossil NP5 61.51 281.03 281.03 281.03
  T Didymocyrtis prismatica Radiolarian   16.73   16.04 16.04
  B Dorcadospyris dentata Radiolarian   18.22 25.49 35.07 30.28
  T Dorcadospyris ateuchus Radiolarian   18.64 25.49 35.07 30.28
  T Theocotylissa annosa Radiolarian   20.05 35.07 44.43 39.75
  B Cyrtocapsella tetrapera Radiolarian   21.82 72.63 82.64 77.63
  T Lychnocanoma elongata Radiolarian   17.59   16.04 16.04
  B Dorcadospyris dentata Radiolarian RN3 18.22 25.49 35.07 30.28
  T Dorcadospyris ateuchus Radiolarian   18.64 25.49 35.07 30.28
  T Theocyrtis annosa Radiolarian RN02 20.05 35.07 44.43 39.75
  B Cyrtocapsa tetrapera Radiolarian   21.82 72.63 82.64 77.63
  T Artophormis gracilis Radiolarian   22.41 72.63 82.64 77.63
  B Lychnocanoma elongata Radiolarian RP22 24.18 91.65 101.62 96.59
  B Lychnocanoma apadora Radiolarian RP21b 26.50 120.06 128.55 124.30
  B Dorcadospyris ateuchus Radiolarian RP21a 28.64 139.68   139.68
  T Theocotyle conica Radiolarian   45.63   245.11 245.11
  B Eusyringium lagena Radiolarian RP12 46.21 245.90 246.57 246.23
D14 B Dictyoprora mongolfieri Radiolarian RP11 47.98 246.57 255.96 251.27
D15 T Amphisphaera goruna Radiolarian   55.50 246.57 255.96 251.27
  T Lamptonium pennatum Radiolarian   55.90 255.96 260.44 258.20
  T Bekoma campechensis Radiolarian   57.83 260.44 266.19 263.32
  B Podocyrtis papalis Radiolarian   55.96 266.19 275.89 271.04
  B Bekoma bidartensis Radiolarian RP7 58.35 266.19 275.89 271.04
  T Buryella pentadica Radiolarian RP6 59.71 275.89   275.89
  B Praeorbulina sicana Planktonic foraminifer M4/M5 16.38 16.01 18.08 17.05
  T Catapsydrax dissimilis Planktonic foraminifer M3/M4 17.54 24.08 25.46 24.77
  T Paragloborotalia kugleri Planktonic foraminifer M1b/M2 21.12 40.20 43.20 41.70
  T Globoquadrina dehiscens Planktonic foraminifer M1a/M1b 22.44 68.70 71.70 70.20
  B Paragloborotalia kugleri Planktonic foraminifer O7/M1a 22.96 78.21 81.11 79.66
  B Paragloborotalia pseudokugleri Planktonic foraminifer O6/O7 25.21 118.96 119.98 119.47
  B Globoturborotalita angulisuturalis Planktonic foraminifer O3/O4 29.18 151.56 155.01 153.29
  T Turborotalia ampliapertura Planktonic foraminifer O2/O3 30.28 159.09 162.24 160.67
  T Pseudohastigernia naguewichiensis Planktonic foraminifer O1/O2 32.10 173.74 176.11 174.93
  T Globigerinatheka index Planktonic foraminifer E15/E16 34.61 200.30 201.80 201.05
  T Globigerinatheka semiinvoluta Planktonic foraminifer E14/E15 36.18 218.70 220.20 219.45
  T Acarinina spp. Planktonic foraminifer Lower E14 37.75 221.74 225.30 223.52
  T Morozovelloides crassatus Planktonic foraminifer E13/E14 38.25 228.30 231.30 229.80
  T Guembelitrioides nuttalli Planktonic foraminifer E10/E11 42.07 236.40 237.90 237.15
  B Guembelitrioides nuttalli Planktonic foraminifer E7/E8 45.72 242.35 243.90 243.13
  T Globanomalina pseudomenardii Planktonic foraminifer P4/P5 57.10 257.44 258.90 258.17
D02 C5Dn/C5Dr.1r Chron boundary   17.53     9.99
  C5Dr.1r/C5Dr.1n Chron boundary   17.72     10.39
  C5Dr.1n/C5Dr.2r Chron boundary   17.74     10.80
  C5Dr.2r/C5En Chron boundary   18.06     12.57
D03 C6n/C6r Chron boundary   19.72     26.34
  C6r/C6An.1n Chron boundary   20.04     28.59
  C6An.1n/C6An.1r Chron boundary   20.21     31.15
D04 C6AAr.3r/C6Bn.1n Chron boundary   21.77     46.07
  C6Bn.1n/C6Bn.1r Chron boundary   21.94     50.73
  C6Bn.1r/C6Bn.2n Chron boundary   21.99     52.91
  C6Bn.2n/C6Br Chron boundary   22.27     59.86
  C6Br/C6Cn.1n Chron boundary   22.56     69.12
  C6Cn.1n/C6Cn.1r Chron boundary   22.75     74.08
  C6Cn.1r/C6Cn.2n Chron boundary   22.90     79.45
D05 C6Cn.2n/C6Cn.2r Chron boundary   23.03     81.16
D06 C6Cr/C7n.1n Chron boundary   23.96     94.72
  C7n.1n/C7n.1r Chron boundary   24.00     95.76
  C7n.1r/C7n.2n Chron boundary   24.11     97.74
  C7r/C7An Chron boundary   24.76     105.71
D07 C7An/C7Ar Chron boundary   24.98     108.74
D08 C8r/C9n Chron boundary   26.42     140.59
D11 C10r/C11n.1n Chron boundary   29.18     158.99
  C11n.1n/C11n.1r Chron boundary   29.48     162.79
  C11n.1r/C11n.2n Chron boundary   29.53     164.27
  C11n.2n/C11r Chron boundary   29.97     167.60
  C12n/C12r Chron boundary   31.03     176.58
D12 C12r/C13n Chron boundary   33.16     194.93
  C13r/C15n Chron boundary   35.00     203.84

* = from Fornacini et al. (2010) recalibrated to GTS2012, † = from Agnini et al. (2007) recalibrated to GTS2012. T = top, Tc = top common, B = base, Bc = base common.

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