Table T4. Calcareous nannofossil datums, Site U1411.
| Hole, core, section, interval (cm) | Age | Zone | Marker species |
Age (Ma) |
Depth (mbsf) | ||||
|---|---|---|---|---|---|---|---|---|---|
| Top | Bottom | Top | Bottom | Midpoint | ± | ||||
| 342- | 342- | ||||||||
| Pleistocene | |||||||||
| U1411B-1H-CC | U1411B-1H-CC | NN20 | T Pseudoemiliania lacunosa | 0.44 | 0.89 | 0.89 | 0.89 | 0.00 | |
| Miocene | |||||||||
| U1411B-3H-5, 80 | U1411B-3H-6, 90 | NN3 | T Triquetrorhabdulus carinatus | 18.28 | 17.20 | 18.80 | 18.00 | 0.80 | |
| Oligocene | |||||||||
| U1411B-6H-CC | U1411B-7H-CC | NP25 | ?T Sphenolithus distentus | 26.84 | 48.95 | 58.42 | 53.68 | 4.74 | |
| U1411B-10H-2, 55 | U1411B-10H-4, 55 | NP24 | B Sphenolithus ciperoensis | 29.62 | 78.95 | 81.95 | 80.45 | 1.50 | |
| U1411B-11H-4, 50 | U1411B-11H-6, 50 | B Sphenolithus distentus | 30.00 | 91.20 | 94.20 | 92.70 | 1.50 | ||
| U1411B-12H-2, 30 | U1411B-12H-5, 30 | NP23 | T Reticulofenestra umbilicus (>14 μm) | 32.02 | 97.70 | 102.12 | 99.91 | 2.21 | |
| U1411B-12H-5, 30 | U1411B-12H-CC | T Isthmolithus recurvus | 32.49 | 102.12 | 105.36 | 103.74 | 1.62 | ||
| U1411B-16H-2, 50 | U1411B-16H-3, 150 | NP22 | T Coccolithus formosus | 32.92 | 135.58 | 138.10 | 136.84 | 1.26 | |
| Eocene | |||||||||
| U1411B-19H-3, 150 | U1411B-19H-CC | NP21 | T Discoaster saipanensis | 34.44 | 166.60 | 172.38 | 169.49 | 2.89 | |
| U1411B-20H-CC | U1411B-21X-CC | T Discoaster barbadiensis | 177.40 | 178.05 | 177.72 | 0.33 | |||
| U1411B-25X-CC | U1411B-26X-CC | NP19/NP20 | ?Bc Isthmolithus recurvus | 36.97 | 222.73 | 235.15 | 228.94 | 6.21 | |
| U1411B-27X-4, 70 | U1411B-27X-5, 72 | Ta Cribrocentrum erbae* | 37.58 | 238.82 | 240.33 | 239.58 | 0.76 | ||
| U1411B-28X-4, 88 | U1411B-28X-5, 64 | Br Isthmolithus recurvus* | 37.64 | 249.98 | 251.24 | 250.61 | 0.63 | ||
| U1411B-28X-6, 67 | U1411B-28X-7, 22 | Ba Cribrocentrum erbae* | 38.07 | 252.77 | 253.53 | 253.15 | 0.38 | ||
| U1411B-28X-6, 67 | U1411B-28X-7, 22 | T Chiasmolithus grandis | 37.98 | 252.77 | 253.53 | 253.15 | 0.38 | ||
| U1411B-28X-CC | U1411B-28X-CC | NP18 | B Chiasmolithus oamaruensis* | 38.03 | 254.46 | 254.46 | 254.46 | 0.00 | |
* = from Agnini et al. (2011) recalibrated to GTS2012. B = base, Ba = base of acme, Bc =base common, Br = base rare, T = top, Ta = top of acme.
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