Table T1. Calcareous nannofossil datum stratigraphic positions and ages, Site U1308. (See table notes.)
| Datum number |
Calcareous nannofossil datum | Site U1308 | Age (ka) |
|||
|---|---|---|---|---|---|---|
| Depth (mcd) |
Age (ka) |
MIS | Chron/Subchron | |||
| 2 | FO Emiliania huxleyi | 16.88–16.93 | 264.64–265.47 | 8 | Brunhes | 265 |
| 3 | LO Pseudoemiliania lacunosa | 28.14–28.19 | 450.61–452.20 | 12 | Brunhes | 451 |
| 5 | LO Reticulofenestra asanoi | 55.47–55.52 | 852.42–854.05 | 21 | Brunhes~Jaramillo | 853 |
| 6 | FO Gephyrocapsa parallela | 66.40–66.45 | 987.34–987.98 | 27 | Top Jaramillo | 987 |
| 7 | FO Reticulofenestra asanoi | 80.28–80.33 | 1128.3–1128.7 | 34 | Jaramillo~Cobb Mountain | 1128 |
| 8 | LO Gephyrocapsa spp. (large) | 84.56–84.86 | 1180.5–1184.3 | 35 | In Cobb Mountain | 1182 |
| 9 | LO Helicosphaera sellii | 84.86–90.16 | 1184.3–1255.2 | 38 | Cobb Mountain~Olduvai | 1219 |
| 10 | FO Gephyrocapsa spp. (large) | 100.59–103.52 | 1371.3–1412.8 | 44 | Cobb Mountain~Olduvai | 1392 |
| 11 | FO Gephyrocapsa oceanica | 123.07–131.27 | — | — | Above Olduvai | 1706* |
| 12 | FO Gephyrocapsa caribbeanica | 131.27–132.74 | — | — | Above Olduvai | 1763* |
| 13 | LO Discoaster brouweri | 144.51–153.29 | — | — | Below Olduvai | 1990* |
Notes: Datum numbers by Sato and Takayama (1992). MIS = marine isotope stage. FO = first occurrence, LO = last occurrence, — = no data, * = based on magnetostratigraphy.