Table T22. Constrained tie points for depth-age relationship, Site U1422.
| Selected ties for depth-age lines |
Event type |
Bioevents and epoch boundaries | Depth CCSF-A (m) |
Depth range (±) |
Age (Ma) |
Age range (±) |
Sedimentation rate (m/m.y.) |
|---|---|---|---|---|---|---|---|
| Top | 0.00 | 0.000 | |||||
| R | LO Amphimelissa setosa | 9.5 | 5.2 | 0.080 | 0.0 | 75.1 | |
| R | LO Spongodiscus sp. | 19.9 | 5.1 | 0.290 | 0.0 | ||
| Biostrat | 21.79 | 0.290 | |||||
| CN | FO Emiliania huxleyi | 23.7 | 2.5 | 0.290 | 0.0 | 32.0 | |
| PM | Bottom of C1n (Brunhes/Matuyama) | 34.9 | 1.5 | 0.781 | 0.0 | ||
| D | LO Proboscia curvirostris | 40.3 | 5.0 | 0.300 | 0.0 | ||
| Paleomag | PM | Top of C1r.1n (Jaramillo) | 44.1 | 0.5 | 0.988 | 0.0 | |
| PM | Bottom of C1r.1n (Jaramillo) | 48.2 | 0.3 | 1.072 | 0.0 | 47.9 | |
| Unit IA/IB | 63.97 | 1.402 | |||||
| PM | Top of C2n (Olduvai) | 85.1 | 3.1 | 1.778 | 0.0 | 53.6 | |
| R | LO Axoprunum acquilonium | 86.1 | 9.7 | 1.450 | 0.3 | ||
| Unit IB/II | 99.0 | 2.056 | |||||
| PM | Bottom of C2n (Olduvai) | 92.6 | 0.0 | 1.945 | 0.0 | 95.7 | |
| D | LO Neodenticula koizumii | 110.4 | 4.9 | 2.000 | 0.0 | ||
| R | LO Cycladophora sakaii | 130.5 | 5.3 | 2.300 | 0.0 | ||
| D | FO Neodenticula seminae | 148.4 | 2.6 | 2.400 | 0.0 | ||
| R | FO Cycladophora davisiana | 158.3 | 2.4 | 2.700 | 0.0 | ||
| Biostrat | 160.62 | 2.700 | |||||
| D | LO Neodenticula kamtschatica | 163.0 | 2.3 | 2.650 | 0.1 | (95.7) | |
| R | LO Hexacontium parviakitaensis | 163.0 | 2.3 | 2.700 | 0.0 | ||
| D | FO Neodenticula koizumii | 191.2 | 2.3 | 3.665 | 0.3 | ||
| R | LO Hexacontium parviakitaensis | 217.0 | 0.0 | 4.100 | 0.2 |
R = radiolarian, CN = calcareous nannofossil, D = diatom, PM = paleomagnetism. LO = last occurrence, FO = first occurrence.
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