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Table T3. Calcareous nannofossil datums, Site U1333. (See table note.)

Core, section, interval (cm) Marker species Age
(Ma)
Depth CSF (m)
Top Bottom Top Bottom Midpoint ±
320-U1333A- 320-U1333A-
2H-5, 70 2H-6, 70 B Sphenolithus disbelemnos 22.8 16.20 17.70 16.95 0.75
2H-7, 70 2H-CC T Sphenolithus delphix 23.1 19.20 19.57 19.39 0.19
2H-CC 3H-1, 70 B Sphenolithus delphix 23.2 19.57 19.70 19.64 0.06
4H-5, 70 4H-6, 70 T Sphenolithus ciperoensis 24.4 35.20 36.70 35.95 0.75
3H-CC 4H-1, 70 X T. longus/T. carinatus 24.7 28.87 29.20 29.04 0.16
3H-5, 70 3H-6, 70 Tc Cyclicargolithus abisectus 24.7 25.70 27.20 26.45 0.75
5H-2, 70 5H-3, 70 T Sphenolithus distentus 26.8 40.20 41.70 40.95 0.75
5H-3, 70 5H-4, 70 T Sphenolithus predistentus 26.9 41.70 43.20 42.45 0.75
5H-4, 70 5H-6, 70 B Sphenolithus ciperoensis 27.1 43.20 46.20 44.70 1.50
6H-4, 70 6H-6, 70 T Sphenolithus pseudoradians 28.8 52.70 55.70 54.20 1.50
9H-3, 50 9H-4, 50 B Sphenolithus distentus 30.0 79.50 81.00 80.25 0.75
11X-4, 70 11X-CC T Reticulofenestra umbilicus 32.0 100.20 101.17 100.69 0.48
12X-3, 70 12X-4, 70 T Coccolithus formosus 32.9 104.40 105.90 105.15 0.75
13X-3, 70 13X-3, 140 T Discoaster saipanensis 34.4 114.00 114.70 114.35 0.35
14X-6, 70 14X-CC T Chiasmolithus grandis 37.1 128.20 129.80 129.00 0.80
15X-5, 70 15X-6, 70 B Dictyococcites bisectus 38.0 136.30 137.80 137.05 0.75
16X-4, 40 16X-5, 40 T Chiasmolithus solitus 40.4 144.10 145.60 144.85 0.75
17X-6,110 17X-CC T Nannotetrina 42.3 157.40 158.46 157.93 0.53
18X-1, 60 18X-2, 34 B Reticulofenestra umbilicus >14 µm 42.5 159.00 160.24 159.62 0.62
18X-4, 88 18X-CC T Nannotetrina fulgens 43.4 163.12 163.86 163.49 0.37
20X-1, 73 20X-2, 50 B Nannotetrina fulgens 46.8 178.33 179.60 178.97 0.63
20X-2, 50 20X-CC B Sphenolithus furcatolithoides 45.8 179.60 180.12 179.86 0.26
20X-2, 50 20X-CC B Nannotetrina 48.0 179.60 180.12 179.86 0.26
320-U1332B- 320-U1332B-
20X-1, 46 20X-2, 86 B Sphenolithus furcatolithoides 45.8 172.76 174.66 173.71 0.95
20X-3, 102 20X-4, 37 B Nannotetrina 48.0 176.32 177.17 176.75 0.42

Note: B = bottom, T = top, X = abundance crossover, Tc = top common.

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