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Table T3. Calcareous nannofossil datums, Site U1406.

Hole, core, section, interval (cm) Age Zone/
Subzone
Marker species Age
(Ma)
Depth (mbsf)
Top Bottom Top Bottom Mid-point ±
342- 342-                
    Pleistocene              
U1406A-1H-1, 75 U1406A-1H-1, 75   NN20 T Pseudoemiliania lacunosa 0.44 0.00 0.75 0.38 0.38
U1406A-1H-1, 75 U1406A-1H-2, 75   NN19 T Discoaster brouweri 1.93 0.75 2.26 1.51 0.76
    Miocene              
U1406A-1H-2, 75 U1406A-1H-3, 75   NN6 T Sphenolithus heteromorphus 13.53 2.26 3.76 3.01 0.75
U1406A-1H-2, 75 U1406A-1H-3, 75   NN5 T Helicosphaera ampliaperta 14.91 2.26 3.76 3.01 0.75
U1406A-1H-CC U1406A-2H-2, 100     B Sphenolithus heteromorphus 17.71 6.23 8.71 7.47 1.24
U1406A-2H-2, 100 U1406A-2H-4, 100   NN4 T Sphenolithus belemnos 17.95 8.71 11.70 10.21 1.50
U1406A-1H-2, 75 U1406A-2H-6, 75   NN3 Tc Triquetrorhabdulus carinatus 18.28 11.70 14.45 13.08 1.38
U1406A-1H-2, 75 U1406A-5H-2, 100     B Sphenolithus belemnos 19.03 35.07 37.21 36.14 1.07
U1406A-8H-7 (CC) U1406A-9H-2, 100     B Sphenolithus disbelemnos 22.76 72.63 75.21 73.92 1.29
U1406A-9H-5, 88 U1406A-9H-6, 88     T Sphenolithus capricornutus 22.97 79.72 81.12 80.42 0.70
    Oligocene/Miocene boundary
U1406A-9H-5, 88 U1406A-9H-6, 88     T Sphenolithus delphix 23.11 79.72 81.12 80.42 0.70
U1406A-10H-1,100 U1406A-10H-2,100     B Sphenolithus delphix 23.21 83.20 84.70 83.95 0.75
U1406A-11H-5,100 U1406A-11H-6,100   NN1 T Sphenolithus ciperoensis 24.43 98.70 100.22 99.46 0.76
U1406A-16H-5, 75 U1406A-16H-CC   NP25 T Sphenolithus distentus 26.44 145.95 148.04 146.99 1.04
U1406A-16H-5, 75 U1406A-16H-CC     Bc Triquetrorhabdulus carinatus 26.57 145.95 148.04 146.99 1.04
U1406A-18H-1, 75 U1406A-18H-3, 75   NP24 B Sphenolithus ciperoensis 29.62 158.05 160.89 159.47 1.42
U1406A-19H-2, 75 U1406A-19H-3, 75     B Sphenolithus distentus 30.00 166.95 168.45 167.70 0.75
U1406A-19H-6, 154 (CC) U1406A-20H-CC   NP23 T Reticulofenestra umbilicus (>14 μm) 32.02 173.77 181.70 177.74 3.96
U1406A-20H-CC U1406A-21H-4, 75     T Isthmolithus recurvus 32.49 181.73 186.08 183.91 2.18
U1406A-21H-CC U1406A-22H-2, 150   NP22 T Coccolithus formosus 32.92 191.51 194.16 192.84 1.33
    Eocene/Oligocene boundary
U1406A-22H-CC U1406A-23H-1, 7   NP21 T Discoaster saipanensis 34.44 199.29 199.37 199.33 0.04
U1406A-23H-2, 30 U1406A-23H-3, 47     T Discoaster barbadiensis 34.76 201.10 202.77 201.94 0.84
U1406A-26H-3, 50 U1406A-26X-CC   NP19/NP20 B Isthmolithus recurvus 36.97 221.20 221.77 221.49 0.29
U1406A-26X-CC U1406A-27X-2,100   NP18 Bc Chiasmolithus oamaruensis 38.09 221.77 225.30 223.53 1.77
U1406A-26X-CC U1406A-27X-2,100     T Chiasmolithus grandis 37.98 221.77 225.30 223.53 1.77
U1406A-28X-1, 100 U1406A-28X-2, 100     B Dictyococcites bisectus (>10 μm)* 40.36 233.41 234.91 234.16 0.75
U1406A-28X-2, 100 U1406A-28X-4, 100   NP17 T Chiasmolithus solitus 40.40 234.91 239.90 237.41 2.50
U1406A-28X-6, 63 U1406A-28X-CC     B Reticulofenestra reticulata 41.66 240.53 242.30 241.42 0.89
U1406A-28X-6, 63 U1406A-28X-CC     T Nannotetrina spp. 41.85 240.53 242.30 241.42 0.89
U1406A-28X-CC U1406A-29X-1, 57     B Reticulofenestra umbilicus (>14 μm) 41.94 242.30 242.47 242.39 0.08
U1406A-28X-CC U1406A-29X-1, 57     T Nannotetrina fulgens 42.87 242.30 242.47 242.39 0.08
U1406A-29X-1, 57 U1406A-29X-3, 20   NP15c T Chiasmolithus gigas 44.12 242.47 245.11 243.79 1.32
U1406A-29X-4, base U1406A-29X-5, base   NP15b B Chiasmolithus gigas 45.49 247.60 249.10 248.35 0.75
U1406A-29X-6, base U1406A-29X-CC   NP15a B Nannotetrina fulgens 46.29 250.45 250.79 250.62 0.17
U1406A-29X-CC U1406A-30X-CC     B Nannotetrina cristata 47.73 250.79 254.68 252.73 1.94
    Paleocene              
U1406A-30X-CC U1406A-31X-1, 8     Fasciculithus div. decline 56.00 254.68 255.88 255.28 0.60
U1406A-30X-CC U1406A-31X-1, 8     T Fasciculithus alanii 56.00 254.68 255.88 255.28 0.60
U1406A-31X-CC U1406A-32X-2, 34     T Ericsonia robusta (>9 μm) 57.10 260.44 262.84 261.64 1.20
U1406A-32X-2, 34 U1406A-32X-3, 74   NP9 B Discoaster multiradiatus 57.21 262.84 264.75 263.80 0.95
U1406A-32X-2, 34 U1406A-32X-3, 74     Tc Sphenolithus anarrhopus   262.84 264.75 263.80 0.95
U1406A-32X-3, 74 U1406A-32X-4, 75     B Discoaster delicatus 57.45 264.75 265.90 265.33 0.57
U1406A-32X-3, 74 U1406A-32X-4, 75     B Ericsonia robusta (>9 μm) 57.54 264.75 265.90 265.33 0.57
U1406A-32X-3, 74 U1406A-32X-4, 75     Tc Discoaster backmanii 57.57 264.75 265.90 265.33 0.57
U1406A-32X-CC U1406A-33X-3, 58     B Discoaster backmanii 58.28 267.19 273.94 270.56 3.38
    Paleocene              
U1406A-32X-CC U1406A-33X-3, 58   NP8 B Heliolithus riedellii 58.70 267.19 273.94 270.56 3.38
U1406A-33X-CC U1406A-34X-1, 83   NP7 B Discoaster mohleri 58.97 278.63 279.43 279.03 0.40
U1406A-33X-CC U1406A-34X-1, 83     B Sphenolithus anarrhopus 59.40 278.63 279.43 279.03 0.40
U1406A-34X-1, 83 U1406A-34X-2, 60   NP6 B Heliolithus kleinpellii 59.54 279.43 280.37 279.90 0.47
U1406A-34X-2, 60 U1406A-34X-CC     B Heliolithus cantabriae 59.60 280.37 281.03 280.70 0.33
U1406A-34X-CC U1406A-34X-CC   NP5 B Fasciculithus tympaniformis 61.51 281.03 281.03 281.03 0.00

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

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