Table T5. Radiolarian datums, Site U1404.
| Core, section, interval (cm) | Age | Zone | Marker species |
Age (Ma) |
Depth (mbsf) | ||||
|---|---|---|---|---|---|---|---|---|---|
| Top | Bottom | Top | Bottom | Mid-point | ± | ||||
| 342-U1404A- | 342-U1404A- | ||||||||
| Miocene | |||||||||
| 7H-CC | 8H-CC | Top RN2 | T Dorcadospyris ateuchis | 18.64 | 59.13 | 71.00 | 65.21 | 6.10 | |
| 9H-CC | 10H-CC | Base RN2 | B Stichocory delmontensis | 19.35 | 81.06 | 90.57 | 85.82 | 4.75 | |
| 14H-CC | 15H-CC | Base RN1 | B Calocycletta virginis | 21.82 | 124.87 | 134.71 | 129.79 | 4.92 | |
| 14H-CC | 15H-CC | Base RN1 | B Cyrtocapsella tetrapera | 21.82 | 124.87 | 134.71 | 129.79 | 4.92 | |
| Oligocene | |||||||||
| 13H-CC | 14H-CC | Mid-RP22 | B Eucyrtidium diaphanes | 23.00 | 115.07 | 124.87 | 119.97 | 4.90 | |
| 16H-CC | 17H-CC | Base RP22 | B Lychnocanoma elongata | 24.18 | 144.00 | 153.72 | 148.86 | 4.86 | |
| 18H-CC | 19H-CC | Mid-RP21 | B Calocycletta robusta | 25.97 | 163.20 | 172.77 | 167.99 | 4.78 | |
| 19H-CC | 28H-CC | Base RP21 | B Dorcadospyris ateuchus | 28.64 | 172.77 | 244.03 | 208.40 | 35.63 | |
| Eocene | |||||||||
| 28H-CC | 29H-1, 52–53 | Low RP16 | T Sethochytris triconiscus | 39.35 | 244.03 | 244.63 | 244.33 | 0.30 | |
| 29H-1, 52–53 | 29H-CC | Base RP16 | B Podocyrtis goetheana | 40.14 | 244.63 | 253.05 | 248.84 | 4.21 | |
| 29H-1, 52–53 | 29H-CC | Top RP15 | T Lophocyrtis biaurita | 40.14 | 244.63 | 253.05 | 248.84 | 4.21 | |
| 32H-CC | 34X-7 | Base RP15 | X Podocyrtis mitra – Podocyrtis chalara | 40.65 | 270.63 | 289.83 | 280.23 | 9.60 | |
| 36X-CC | Base RP14 | X Podocyrtis sinuosa – Podocyrtis mitra | 43.38 | 299.80 | 299.80 | ||||
B = base, T = top, X = faunal turnover.
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