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Table T16. Biostratigraphic and magnetostratigraphic datums, Hole U1409A.

Datum tie
point 		Datum Datum type Zone/
Subzone 		Age
(Ma) 		Depth (mbsf)
Top Bottom Mid-point
  T Pseudoemiliania lacunosa Calcareous nannofossil NN20 0.44 6.35 10.64 8.50
D02 T Discoaster brouweri Calcareous nannofossil NN19 1.93 10.64 15.85 13.25
  T Discoaster pentaradiatus Calcareous nannofossil NN17 2.39 10.64 15.85 13.25
D23 T Reticulofenestra umbilicus (>14 µm) Calcareous nannofossil NP23 32.02 31.85 34.85 33.35
  T Coccolithus formosus Calcareous nannofossil NP22 32.92 31.85 34.85 33.35
  T Chiasmolithus grandis Calcareous nannofossil   37.98 31.85 34.85 33.35
D24 B Dictyococcites bisectus (>10 µm)* Calcareous nannofossil   40.36 31.85 34.85 33.35
  T Chiasmolithus solitus Calcareous nannofossil NP17 40.40 37.85 38.70 38.28
  B Reticulofenestra reticulata Calcareous nannofossil   41.66 44.44 47.40 45.92
  T Nannotetrina spp. Calcareous nannofossil   41.85 44.44 47.40 45.92
  B Reticulofenestra umbilicus (>14 µm) Calcareous nannofossil   41.94 41.60 44.44 43.02
  T Nannotetrina fulgens Calcareous nannofossil   42.87 47.41 49.18 48.30
  T Chiasmolithus gigas Calcareous nannofossil NP15c 44.12 53.68 58.54 56.11
  B Sphenolithus furcatolithoides Calcareous nannofossil     68.01 77.61 72.81
  B Chiasmolithus gigas Calcareous nannofossil NP15b 45.49 88.49 91.49 89.99
  B Nannotetrina fulgens Calcareous nannofossil NP15a 46.29 96.40 98.10 97.25
  B Nannotetrina cristata Calcareous nannofossil   47.73 101.03 101.10 101.07
  B Blackites inflatus Calcareous nannofossil   47.84 101.03 101.10 101.07
  T Discoaster lodoensis Calcareous nannofossil   47.41 101.10 105.96 103.53
  B Discoaster sublodoensis (5 rayed) Calcareous nannofossil NP14 49.11 119.21 122.20 120.71
  T Tribrachiatus orthostylus Calcareous nannofossil NP13 50.50 119.21 122.20 120.71
  B Dictyococcites/Reticulofenestra Calcareous nannofossil   50.50 126.09 126.97 126.53
  T Toweius spp. Calcareous nannofossil   50.78 126.97 131.33 129.15
  B Coccolithus crassus Calcareous nannofossil   51.64 126.97 131.33 129.15
  B Discoaster lodoensis Calcareous nannofossil NP12 53.70 141.22 151.15 146.18
  B Girgisia gammation Calcareous nannofossil     141.22 151.15 146.18
D34 T Tribrachiatus contortus Calcareous nannofossil NP11 54.17 151.15 153.65 152.40
  B Tribrachiatus orthostylus Calcareous nannofossil   54.37 153.65 153.80 153.73
  B Tribrachiatus contortus Calcareous nannofossil     154.25 154.28 154.27
  B Discoaster diastypus Calcareous nannofossil   54.95 154.25 154.28 154.27
D35 T Fasciculithus spp. Calcareous nannofossil   55.64 154.25 154.28 154.27
  B Rhomboaster bramlettei Calcareous nannofossil NP10 55.86 154.25 154.36 154.31
  B Rhomboaster spp. CNET Calcareous nannofossil NP9b 55.96 154.36 154.57 154.47
  Fasciculithus diversity decline† Calcareous nannofossil   56.00 154.36 154.57 154.47
  T Fasciculithus alanii† Calcareous nannofossil   56.00 154.36 154.57 154.47
  T Ericsonia robusta (>9 µm)† Calcareous nannofossil   57.10 155.30 157.95 156.62
  B Discoaster multiradiatus Calcareous nannofossil NP9a 57.21 157.95 160.59 159.27
  Tc Sphenolithus anarrhopus Calcareous nannofossil     157.95 160.59 159.27
  B Discoaster delicatus† Calcareous nannofossil   57.45 157.95 160.59 159.27
  B Ericsonia robusta (>9µm)† Calcareous nannofossil   57.54 157.95 160.59 159.27
  Tc Discoaster backmanii† Calcareous nannofossil   57.57 157.95 160.59 159.27
  B Discoaster backmanii† Calcareous nannofossil   58.28 160.59 162.73 161.66
  B Heliolithus riedellii Calcareous nannofossil NP8 58.70      
  B Discoaster mohleri Calcareous nannofossil NP7 58.97 175.28 178.01 176.65
  B Sphenolithus anarrhopus† Calcareous nannofossil   59.40 180.35 181.85 181.10
  B Heliolithus kleinpellii Calcareous nannofossil NP6 59.54 180.35 181.85 181.10
D37 B Heliolithus cantabriae Calcareous nannofossil   59.60 184.74 187.66 186.20
  B Fasciculithus tympaniformis Calcareous nannofossil NP5 61.51 191.50 194.53 193.02
  B Ellipsolithus macellus Calcareous nannofossil NP4 63.25      
  B Dictyoprora mongolfieri Radiolarian RP11 47.98   105.96 105.96
D31 B Theocorys plesioanaclasta Radiolarian RP9 50.50 115.46 124.91 120.19
D32 T Buryella tetradica Radiolarian   50.87 124.91 126.09 125.50
D33 B Buryella clinata Radiolarian RP8 53.35 131.33 160.59 145.96
D36 X Bekoma campechensis - B. bidartensis Radiolarian RP7 58.23 160.59 162.71 161.65
  T Buryella pentadica Radiolarian RP6c 59.71 162.71   162.71
  T Morozovella aragonensis Planktonic foraminifer E10/E9 43.26 53.68 58.50 56.09
  B Globigerinatheka kugleri Planktonic foraminifer E9/E8 43.88 65.29 67.97 66.63
  B Guembelitrioides nuttalli Planktonic foraminifer E8/E7b 45.72 105.91 108.13 107.02
  B Turborotalia frontosa Planktonic foraminifer E7b/E7a 48.31 115.41 117.70 116.56
  B Acarinina cuneicamerata Planktonic foraminifer E7a/E6 50.20 123.70 124.86 124.28
  T Morozovella subbotinae Planktonic foraminifer E6/E5 50.67 124.86 125.31 125.09
  B Morozovella aragonensis Planktonic foraminifer E5/E4 52.54 135.47 138.96 137.22
  B Morozovella formosa Planktonic foraminifer E4/E3 54.61 141.20 151.35 146.28
  T Globanomalina pseudomenardii Planktonic foraminifer P5/P4c 57.10 155.59 157.94 156.77
  B Acarinina soldadoensis Planktonic foraminifer P4c/P4b 57.79 161.73 162.68 162.21
  B Globanomalina pseudomenardii Planktonic foraminifer P4/P3 60.37 175.5 179.32 177.41
D38 B Morozovella angulata Planktonic foraminifer P3/P2 62.29 197.75 200.00 198.88
D01 C1n (Brunhes)/C1r.1r (Matuyama) Chron boundary   0.78     8.97
D03 C6Cr/C7n.1n Chron boundary   23.96     12.64
D04 C7n.1n/C7n.1r Chron boundary   24.00     12.74
D05 C7n.1r/C7n.2n Chron boundary   24.11     13.29
D06 C7n.2n/C7r Chron boundary   24.47     14.56
D07 C7r/C7An Chron boundary   24.76     15.89
D08 C7An/C7Ar Chron boundary   24.98     17.19
D09 C7Ar/C8n.1n Chron boundary   25.10     17.31
D10 C8n.1n/C8n.1r Chron boundary   25.26     18.34
D11 C8n.1r/C8n.2n Chron boundary   25.30     18.44
D12 C8n.2n/C8r Chron boundary   25.99     19.83
D13 C8r/C9n Chron boundary   26.42     20.19
D14 C10n.1n/C10n.1r Chron boundary   28.09     22.23
D15 C10n.1r/C10n.2n Chron boundary   28.14     22.37
D16 C10n.2n/C10r Chron boundary   28.28     22.69
D17 C10r/C11n.1n Chron boundary   29.18     25.62
D18 C11n.1n/C11n.1r Chron boundary   29.48     26.28
D19 C11n.1r/C11n.2n Chron boundary   29.53     26.46
D20 C11n.2n/C11r Chron boundary   29.97     27.23
D21 C11r/C12n Chron boundary   30.59     28.13
D22 C12n/C12r Chron boundary   31.03     28.65
  C13n/C13r Chron boundary   33.71     31.93
D25 C19r/C20n Chron boundary   42.30     46.25
D26 C20n/C20r Chron boundary   43.43     57.95
D27 C20r/C21n Chron boundary   45.72     87.99
D28 C21n/C21r Chron boundary   47.35     101.35
D29 C21r/C22n Chron boundary   48.57     107.31
D30 C22n/C22r Chron boundary   49.34     111.08

* = from Fornaciari et al. (2010) recalibrated to GTS2012, † = from Agnini et al. (2007) recalibrated to GTS2012. B = base, T = top, Tc = Top common, X = faunal crossover.

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