Table T5. Radiolarian datums, Site U1406.
| Hole, core, section, interval (cm) | Age |
Zone/ Subzone |
Marker species |
Age (Ma) |
Depth (mbsf) | ||||
|---|---|---|---|---|---|---|---|---|---|
| Top | Bottom | Top | Bottom | Mid-point | ± | ||||
| 342-U1406A- | 342-U1406A- | ||||||||
| Miocene | |||||||||
| 2H-CC | T Lychnocanoma elongata | 17.59 | 16.04 | 16.04 | |||||
| 3H-CC | 4H-CC | RN3 | B Dorcadospyris dentata | 18.22 | 25.49 | 35.07 | 30.28 | 4.79 | |
| 3H-CC | 4H-CC | T Dorcadospyris ateuchus | 18.64 | 25.49 | 35.07 | 30.28 | 4.79 | ||
| 4H-CC | 5H-CC | RN2 | T Theocyrtis annosa | 20.05 | 35.07 | 44.43 | 39.75 | 4.68 | |
| 8H-7 | 9H-CC | B Cyrtocapsa tetrapera | 21.82 | 72.63 | 82.64 | 77.63 | 5.00 | ||
| 8H-7 | 9H-CC | T Artophormis gracilis | 22.41 | 72.63 | 82.64 | 77.63 | 5.00 | ||
| 10H-7 | 11H-CC | RP22 | B Lychnocanoma elongata | 24.18 | 91.65 | 101.52 | 96.59 | 4.94 | |
| 13H-7 | 14H-CC | RP21b | B Lychnocanoma apadora | 26.50 | 120.06 | 128.55 | 124.30 | 4.25 | |
| 15H-CC | 29X-3, 20–22 | RP21a | B Dorcadospyris ateuchus | 28.64 | 139.68 | 139.68 | |||
| Eocene | |||||||||
| 15H-CC | 29X-3, 20–22 | T Theocotyle conica | 45.63 | 245.11 | 245.11 | 0.00 | |||
| 29X-3, 98–100 | 29X-4, 16–18 | RP12 | B Eusyringium lagena | 46.21 | 245.89 | 246.57 | 246.23 | 0.34 | |
| 29X-4, 16–18 | 31X-1, 15–17 | RP11 | B Dictyoprora mongolfieri | 47.98 | 246.57 | 255.96 | 251.27 | 4.70 | |
| Paleocene | |||||||||
| 29X-3, 98–101 | 31X-1, 15–17 | T Amphisphaera goruna | 55.50 | 246.57 | 255.96 | 251.27 | 4.70 | ||
| 31X-1, 15–17 | 31X-CC | T Lamptonium pennatum | 55.90 | 255.96 | 260.44 | 258.20 | 2.24 | ||
| 31X-CC | 32X-CC | T Bekoma campechensis | 57.83 | 260.44 | 266.19 | 263.32 | 2.88 | ||
| 32X-CC | 33X-4, 102–103 | B Podocyrtis papalis | 55.96 | 266.19 | 275.89 | 271.04 | 4.85 | ||
| 32X-CC | 33X-4, 102–103 | RP7 | B Bekoma bidartensis | 58.35 | 266.19 | 275.89 | 271.04 | 4.85 | |
| 33X-4, 102–103 | RP6 | T Buryella pentadica | 59.71 | 275.89 | |||||
B = base, T = top.
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