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Table T3. Calcareous nannofossil datums, Site U1409.

Core, section, interval (cm) Age Zone/
Subzone
Marker species Age
(Ma)
Depth (mbsf)
Top Bottom Top Bottom Midpoint ±
342-U1409A- 342-U1409A-
    Pleistocene              
2H-4, 75 2H-CC   NN20 T Pseudoemiliania lacunosa 0.44 6.35 10.64 8.50 2.15
2H-CC 3H-4, 75   NN19 T Discoaster brouweri 1.93 10.64 15.85 13.25 2.61
    Pliocene            
2H-CC 3H-4, 75   NN17 T Discoaster pentaradiatus 2.39 10.64 15.85 13.25 2.61
    Oligocene              
5H-2, 75 5H-4, 75   NP23 T Reticulofenestra umbilicus (>14 µm) 32.02 31.85 34.85 33.35 1.50
5H-2, 75 5H-4, 75   NP22 T Coccolithus formosus 32.92 31.85 34.85 33.35 1.50
    Eocene              
5H-2, 75 5H-4, 75     T Chiasmolithus grandis 37.98 31.85 34.85 33.35 1.50
5H-2, 75 5H-4, 75     B Dictyococcites bisectus (>10 µm)* 40.36 31.85 34.85 33.35 1.50
        T Sphenolithus furcatolithoides          
5H-6, 75 5H-CC   NP17 T Chiasmolithus solitus 40.40 37.85 38.70 38.28 0.43
6H-4, 84 6H-6, 80     B Reticulofenestra reticulata 41.66 44.44 47.40 45.92 1.48
6H-4, 84 6H-6, 80     T Nannotetrina spp. 41.85 44.44 47.40 45.92 1.48
6H-2, 100 6H-4, 84     B Reticulofenestra umbilicus (>14 µm) 41.94 41.60 44.44 43.02 1.42
6H-6, 81 6H-CC     T Nannotetrina fulgens 42.87 47.41 49.18 48.30 0.89
7H-4, 57 7H-CC   NP15c T Chiasmolithus gigas 44.12 53.68 58.54 56.11 2.43
8H-CC 9H-CC     B Sphenolithus furcatolithoides   68.01 77.61 72.81 4.80
11H-2, 39 11H-4, 39   NP15b B Chiasmolithus gigas 45.49 88.49 91.49 89.99 1.50
11H-CC 12H-2, 50   NP15a B Nannotetrina fulgens 46.29 96.40 98.10 97.25 0.85
12H-4, 43 12H-4, 50     B Nannotetrina cristata 47.73 101.03 101.10 101.07 0.03
12H-4, 43 12H-4, 50     B Blackites inflatus 47.84 101.03 101.10 101.07 0.03
12H-4, 50 12H-CC     T Discoaster lodoensis 47.41 101.10 105.96 103.53 2.43
14H-3, 110 14H-5, 110   NP14 B Discoaster sublodoensis (5 rayed) 49.11 119.21 122.20 120.71 1.49
14H-3, 110 14H-5, 110   NP13 T Tribrachiatus orthostylus 50.50 119.21 122.20 120.71 1.49
15H-CC 16H-CC     B Dictyococcites/Reticulofenestra 50.50 126.09 126.97 126.53 0.44
16H-CC 17X-CC     T Toweius spp. 50.78 126.97 131.33 129.15 2.18
16H-CC 17X-CC     B Coccolithus crassus 51.64 126.97 131.33 129.15 2.18
19X-CC 20X-1, 35   NP12 B Discoaster lodoensis 53.70 141.22 151.15 146.18 4.97
19X-CC 20X-1, 35     B Girgisia gammation   141.22 151.15 146.18 4.97
20X-1, 35 20X-2, 135   NP11 T Tribrachiatus contortus 54.17 151.15 153.65 152.40 1.25
20X-2, 135 20X-2, 150     B Tribrachiatus orthostylus 54.37 153.65 153.80 153.73 0.08
20X-3, 45 20X-3, 48     B Tribrachiatus contortus   154.25 154.28 154.27 0.02
20X-3, 45 20X-3, 48     B Discoaster diastypus 54.95 154.25 154.28 154.27 0.02
20X-3, 45 20X-3, 48     T Fasciculithus spp. 55.64 154.25 154.28 154.27 0.02
20X-3, 48 20X-3, 56   NP10 B Rhomboaster bramlettei 55.86 154.25 154.36 154.31 0.06
20X-3, 56 20X-3, 77   NP9b B Rhomboaster spp. 55.96 154.36 154.57 154.47 0.10
    Paleocene              
20X-3, 56 20X-3, 77     Fasciculithus diversity decline 56.00 154.36 154.57 154.47 0.10
20X-3, 56 20X-3, 77     T Fasciculithus alanii 56.00 154.36 154.57 154.47 0.10
20X-3, 150 20X-5, 114     T Ericsonia robusta (>9 µm) 57.10 155.30 157.95 156.62 1.32
20X-5, 114 20X-CC   NP9a B Discoaster multiradiatus 57.21 157.95 160.59 159.27 1.32
20X-5, 114 20X-CC     Tc Sphenolithus anarrhopus   157.95 160.59 159.27 1.32
20X-5, 114 20X-CC     B Discoaster delicatus 57.45 157.95 160.59 159.27 1.32
20X-5, 114 20X-CC     B Ericsonia robusta (>9 µm) 57.54 157.95 160.59 159.27 1.32
20X-5, 114 20X-CC     Tc Discoaster backmanii 57.57 157.95 160.59 159.27 1.32
20X-CC 21X-CC     B Discoaster backmanii 58.28 160.59 162.73 161.66 1.07
      NP8 B Heliolithus riedellii 58.70        
22X-4, 78 22X-6, 51   NP7 B Discoaster mohleri 58.97 175.28 178.01 176.65 1.36
23X-1, 75 23X-2, 75     B Sphenolithus anarrhopus 59.40 180.35 181.85 181.10 0.75
23X-1, 75 23X-2, 75   NP6 B Heliolithus kleinpellii 59.54 180.35 181.85 181.10 0.75
23X-4, 64 23X-6, 56     B Heliolithus cantabriae 59.60 184.74 187.66 186.20 1.46
24X-2, 80 24X-4, 78   NP5 B Fasciculithus tympaniformis 61.51 191.50 194.53 193.02 1.52
      NP4 B Ellipsolithus macellus 63.25        

* = from Fornaciari et al. (2010) recalibrated to GTS2012. † = from Agnini et al. (2007) recalibrated to GTS2012. ‡ = from Agnini et al. (2006) recalibrated to GTS2012. B = base, Bc = base common, T = top, Tc = top common.

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