Table T4. Microfossil bioevents, Site U1430.
| Core, section, interval (cm) | Event |
Bioevents and epoch boundaries |
Age (Ma) |
Depth CSF-A (m) | Depth CCSF-A (m) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Top | Bottom | Top | Bottom | Midpoint | ± | Top | Bottom | Midpoint | ± | |||
| 346-U1430A- | 346-U1430A- | |||||||||||
| 1H-CC | R | LO Lychnocanoma sakaii | 0.05 | 0.00 | 3.53 | 1.77 | 1.77 | 0.21 | 3.74 | 1.98 | 1.77 | |
| 1H-CC | 2H-CC | CN | FO Emiliania huxleyi | 0.29 | 3.53 | 13.27 | 8.40 | 4.87 | 3.74 | 13.63 | 8.69 | 4.95 |
| 1H-CC | 2H-CC | R | LO Amphimelissa setosa | 0.08 | 3.53 | 13.27 | 8.40 | 4.87 | 3.74 | 13.63 | 8.69 | 4.95 |
| 2H-CC | 3H-CC | R | LO Spongodiscus sp. | 0.29 | 13.27 | 22.88 | 18.08 | 4.81 | 13.63 | 23.88 | 18.76 | 5.13 |
| 3H-3, 57–58 | 3H-CC | D | LO Proboscia curvirostris | 0.30 | 16.67 | 22.88 | 19.78 | 3.11 | 17.67 | 23.88 | 20.78 | 3.11 |
| 5H-CC | 6H-CC | R | LO Axoprunum acquilonium | 1.2–1.7 | 42.05 | 51.37 | 46.71 | 4.66 | 44.00 | 53.74 | 48.87 | 4.87 |
| 6H-CC | 7H-1, 100–101 | D | LO Neodenticula koizumii | 2.00 | 51.37 | 52.10 | 51.74 | 0.37 | 53.74 | 55.02 | 54.38 | 0.64 |
| 6H-CC | 7H-CC | R | FO Cycladophora davisiana | 2.70 | 51.37 | 61.00 | 56.19 | 4.81 | 53.74 | 63.92 | 58.83 | 5.09 |
| 6H-CC | 7H-CC | R | LO Hexacontium parviakitaensis | 2.70 | 51.37 | 61.00 | 56.19 | 4.81 | 53.74 | 63.92 | 58.83 | 5.09 |
| 7H-6, 55–56 | 7H-CC | D | LO Neodenticula kamtschatica | 2.60–2.70 | 59.15 | 61.00 | 60.08 | 0.92 | 62.07 | 63.92 | 63.00 | 0.92 |
| 8H-2, 75 | 8H-3, 75 | D | FO Neodenticula koizumii | 3.40–3.93 | 62.85 | 64.35 | 63.60 | 0.75 | 66.29 | 67.79 | 67.04 | 0.75 |
| 8H-CC | 9H-CC | R | FO Hexacontium parviakitaensis | 3.9–4.3 | 70.39 | 79.90 | 75.15 | 4.75 | 73.83 | 83.45 | 78.64 | 4.81 |
| 8H-CC | 9H-CC | R | LO Lipmanella redondoensis | 5.06 | 70.39 | 79.90 | 75.15 | 4.75 | 73.83 | 83.45 | 78.64 | 4.81 |
| 8H-CC | 9H-CC | R | FO Axoprunum acquilonium | 7.10 | 70.39 | 79.90 | 75.15 | 4.75 | 73.83 | 83.45 | 78.64 | 4.81 |
| 9H-CC | 10H-CC | R | FO Larcopyle pylomaticus | 5.30 | 79.90 | 89.46 | 84.68 | 4.78 | 83.45 | 93.91 | 88.68 | 5.23 |
| 9H-CC | 10H-CC | D | FO Shionodiscus oestrupii | 5.56 | 79.90 | 89.46 | 84.68 | 4.78 | 83.45 | 93.91 | 88.68 | 5.23 |
| 8H-CC | 9H-CC | R | LO Cycladophora nakasekoi | 7.40 | 70.39 | 79.90 | 75.15 | 4.75 | 73.83 | 83.45 | 78.64 | 4.81 |
| 10H-CC | 11H-CC | D | LCO Thalassionema schraderi | 7.67 | 89.46 | 98.84 | 94.15 | 4.69 | 93.91 | 103.91 | 98.91 | 5.00 |
| 13H-CC | 14H-CC | D | FCO Thalassionema schraderi | 8.50 | 117.93 | 127.42 | 122.68 | 4.74 | 124.47 | 134.37 | 129.42 | 4.95 |
| 14H-CC | 15H-CC | D | LO Denticulopsis katayamae | 8.70 | 127.42 | 136.91 | 132.17 | 4.75 | 134.37 | 144.28 | 139.32 | 4.95 |
| 15H-CC | 16H-CC | R | LCO Lychnocanoma magnacornuta | 9.10 | 136.91 | 146.47 | 141.69 | 4.78 | 144.28 | 154.61 | 149.44 | 5.17 |
| 19H-CC | 20H-CC | R | FO Cycladophora nakasekoi | 10.10 | 174.96 | 183.48 | 179.22 | 4.26 | 185.60 | 194.76 | 190.18 | 4.58 |
| 19H-CC | 20H-CC | R | LO Cyrtocapsella japonica | 10.10 | 174.96 | 183.48 | 179.22 | 4.26 | 185.60 | 194.76 | 190.18 | 4.58 |
| 19H-CC | 20H-CC | D | LO Denticulopsis hustedtii | 10.20 | 174.96 | 183.48 | 179.22 | 4.26 | 185.60 | 194.76 | 190.18 | 4.58 |
| 21H-CC | 22H-CC | R | LO Dendrospyris uruyaensis | 10.10 | 192.9 | 202.2 | 197.55 | 4.65 | 204.87 | 215.41 | 210.14 | 5.27 |
| 25H-CC | 26H-CC | R | FO Lychnocanoma magnacornuta | 11.80 | 230.65 | 235.64 | 233.15 | 2.50 | 244.36 | 250.24 | 247.30 | 2.94 |
| 27H-CC | 28H-CC | R | FO Dendrospyris uruyaensis | 11.80 | 240.38 | 245.06 | 242.72 | 2.34 | 254.99 | 260.25 | 257.62 | 2.63 |
| 27H-CC | 28H-CC | R | LO Eucyrtidium inflatum | 11.80 | 240.38 | 245.06 | 242.72 | 2.34 | 254.99 | 260.25 | 257.62 | 2.63 |
| 27H-CC | 28H-CC | R | LO Lithopera renzae | 11.80 | 240.38 | 245.06 | 242.72 | 2.34 | 254.99 | 260.25 | 257.62 | 2.63 |
| 27H-CC | 28H-CC | D | FCO Denticulopsis simonsenii | 13.10 | 240.38 | 245.06 | 242.72 | 2.34 | 254.99 | 260.25 | 257.62 | 2.63 |
| 29H-CC | 30X-CC | R | RD Cyrticapsella tetrapera | 12.60 | 249.50 | 249.68 | 249.59 | 0.09 | 264.63 | 264.81 | 264.72 | 0.09 |
| 30X-CC | 31X-CC | R | LO Dendrospyris sakaii | 14.80 | 249.68 | 255.07 | 252.38 | 2.69 | 264.81 | 270.20 | 267.50 | 2.69 |
| 346-U1430B- | 346-U1430B- | |||||||||||
| 3H-CC | 4H-CC | F | LO Neogloboquadrina kagaensis group | 0.70 | 27.58 | 36.89 | 32.24 | 4.66 | 28.02 | 37.86 | 32.94 | 4.92 |
| 4H-CC | 5H-CC | F | Neogloboquadrina pachyderma (coiling change, d to s) | 1.14–1.24 | 36.94 | 46.32 | 41.63 | 4.69 | 37.91 | 47.90 | 42.91 | 4.99 |
| 32X-1, 111–113 | 33X-1, 59–61 | R | LO Pentactinosphaera hokurikuensis | 15.0 | 251.11 | 256.29 | 253.70 | 2.59 | 267.45 | 272.63 | 270.04 | 2.59 |
| 346-U1430C- | 346-U1430C- | |||||||||||
| 3H-CC | 4H-CC | F | LO Neogloboquadrina kagaensis group | 0.70 | 24.20 | 33.56 | 28.88 | 4.68 | 25.04 | 34.43 | 29.73 | 4.70 |
| 29H-CC | 30H-CC | R | FO Dendrospyris uruyaensis | 11.80 | 238.47 | 243.01 | 240.74 | 2.27 | 254.36 | 259.30 | 256.83 | 2.47 |
| 29H-CC | 30H-CC | R | LO Eucyrtidium inflatum | 11.80 | 238.47 | 243.01 | 240.74 | 2.27 | 254.36 | 259.30 | 256.83 | 2.47 |
| 30H-CC | 31H-CC | R | RD Cyrticapsella tetrapera | 12.60 | 243.01 | 244.61 | 243.81 | 0.80 | 259.30 | 260.90 | 260.10 | 0.80 |
R = radiolarian, F = foraminifer, CN = calcareous nannofossil, D = diatom. LO = last occurrence, LCO = last common occurrence, FO = first occurrence, FCO = first common occurrence, RD = rapid decrease.
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