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Table T9. Recognized nannofossil events, Hole C0008A. (See table notes.)

Epoch Nannofossil
zone
Age
(Ma)
Nannofossil event Top Bottom Mean
depth
CSF (m)
Core, section,
interval (cm)
Depth
CSF (m)
Core, section,
interval (cm)
Depth
CSF (m)
        316-C0008A- 316-C0008A-  
Pleistocene NN21 0.063 Gephyrocapsa spp. (>3.5 µm)–Emiliania huxleyi 1H-CC, 0–5 6.83 2H-CC, 4–9 17.01 11.92
Repeated NN19? 1.078 FCO Reticulofenestra asanoi 2H-CC, 4–9 17.01 3H-CC, 0–5 25.62 21.31
1.24 LO Gephyrocapsa spp. (>5.5 µm) 4H-CC, 6.5–11.5 35.53 5H-CC, 0–5 44.80 40.16
1.34 LO Helicosphaera sellii 5H-CC, 0–5 44.80 6H-CC, 56.5–61.5 54.82 49.81
1.46 FCO Gephyrocapsa spp. (>5.5 µm) 8H-CC, 0–5 72.13 9H-CC, 0–5 78.50 75.31
1.6 LO Calcidiscus macintyrei (≥11 µm) 9H-CC, 0–5 78.50 10H-CC, 0–5 90.39 84.44
NN19 1.24 LO Gephyrocapsa spp. (>5.5 µm) 9H-CC, 0–5 78.50 10H-CC, 0–5 90.39 84.44
1.34 LO Helicosphaera sellii 10H-CC, 0–5 90.39 11H-CC, 0–5 100.54 95.46
1.46 FCO Gephyrocapsa spp. (>5.5 µm) 19H-CC, 12.5–17.5 152.69 20H-CC, 0–5 158.53 155.61
1.6 LO Calcidiscus macintyrei (≥11 µm) 22H-CC, 5–10 178.54 23H-CC, 7.5–12.5 186.21 182.37
1.67 FO Gephyrocapsa spp. (>3.5 µm) 30X-5, 60 238.91 30X-CC, 0–5 242.71 240.81
Pliocene NN18 2.135 AB Discoaster triradiatus 31X-CC, 0–5 254.10 32X-5, 77 259.22 256.66
NN17 2.393 LO Discoaster pentaradiatus 33X-3, 25 265.64 33X-CC, 0–5 269.64 267.64
NN16 2.87 LO Discoaster tamalis 34X-CC, 0–5 272.86 35X-1, 2 281.78 277.32
3.65 LO Sphenolithus spp. 35X-CC, 34–39 282.35 36X-CC, 18–23 291.69 287.02
Miocene? NN11? Falling? 5.59 LO Discoaster quinqueramus 38X-CC, 0–5 310.74 40X-CC, 10–11 329.36 320.05

Notes: CSF = core depth below seafloor. FCO = first consistent occurrence, LO = last occurrence, FO = first occurrence, AB = acme beginning.

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