|
Biohorizons
|
Zone (base)
|
Core, section, interval (cm)
|
Depth (mbsf)
|
Age
(Ma) |
Reference
|
||||
|---|---|---|---|---|---|---|---|---|---|
|
NN
|
CN
|
Top
|
Bottom
|
Top
|
Bottom
|
Mean
|
|||
|
|
|
|
206-1256B- | 206-1256B- |
|
|
|
|
|
| FO Emiliania huxleyi | NN21 | CN15 | 1H-2, 40–42 | 1H-3, 40–42 | 1.90 | 3.40 | 2.65 | 0.26 | 1 |
| LO Pseudoemiliania lacunosa | NN20 | CN14b | 1H-4, 40–42 | 1H-4, 115–117 | 4.90 | 5.65 | 5.28 | 0.46 | 1 |
| LO Helicosphaera sellii | NN19b |
|
2H-7, 40–42 | 2H-CC | 15.47 | 15.91 | 15.69 | 1.47 | 1 |
| LO Calcidiscus macintyrei |
|
|
3H-1, 40–42 | 3H-1, 115–117 | 16.00 | 16.75 | 16.38 | 1.59 | 1 |
| LO Discoaster brouweri | NN19a | CN13 | 3H-1, 115–117 | 3H-3, 115–117 | 16.75 | 19.75 | 18.25 | 1.95 | 1 |
| LO Discoaster pentaradiatus | NN18 | CN12d | 3H-5, 115–117 | 3H-7, 40–42 | 22.75 | 25.00 | 23.88 | 2.44 | 2 |
| LO Discoaster surculus | NN17 | CN12c | 4H-1, 115–117 | 4H-2, 40–42 | 26.25 | 27.00 | 26.63 | 2.61 | 2 |
| LO Sphenolithus abies/neoabies | NN16 |
|
4H-3, 40–42 | 4H-4, 40–42 | 28.50 | 30.00 | 29.25 | 3.60 | 1 |
| LO Reticulofenestra pseudoumbilica |
|
CN12a | 4H-4, 40–42 | 4H-4, 115–117 | 30.00 | 30.75 | 30.38 | 3.75 | 1 |
| LO Amaurolithus spp. (A. primus) |
|
CN11a | 5H-1, 115–117 | 5H-2, 40-42 | 35.75 | 36.50 | 36.13 | 4.80 | 1 |
| LO Ceratolithus acutus |
|
CN10c | 5H-2, 40–42 | 5H-2, 115–117 | 36.50 | 37.25 | 36.88 | 4.99 | 3 |
| FO Ceratolithus rugosus | NN13 |
|
5H-3, 115–117 | 5H-4, 40-42 | 38.75 | 39.50 | 39.13 | 5.04 | 2 |
| FO Ceratolithus acutus | NN12 | CN10b | 5H-4, 115–117 | 5H-5, 40–42 | 40.25 | 41.00 | 40.63 | 5.34 | 1 |
| LO Discoaster quinqueramus |
|
CN10a | 5H-5, 115–117 | 5H-6, 40-42 | 41.75 | 42.50 | 42.13 | 5.60 | 4 |
| LO Amaurolithus amplificus | NN11d | CN9b | 6H-2, 115-117 | 6H-3, 40–42 | 46.75 | 47.50 | 47.13 | 5.90 | 4 |
| FO Amaurolithus amplificus | NN11c |
|
7H-3, 40–42 | 7H-3, 115–117 | 57.00 | 57.75 | 57.38 | 6.60 | 4 |
| FO Amaurolithus primus | NN11b |
|
7H-7, 40–42 | 7H-CC | 63.00 | 63.39 | 63.20 | 7.20 | 4 |
| FO Discoaster berggrenii | NN11a | CN9a | 9H-6, 40-42 | 9H-6, 115–117 | 80.50 | 81.25 | 80.88 | 8.60 | 4 |
| LO Discoaster hamatus | NN10 | CN8 | 10H-2, 40–42 | 10H-2, 115–117 | 84.00 | 84.75 | 84.38 | 9.40 | 4 |
| LO Catinaster coalitus | NN9 | CN7 | 11H-3, 40-42 | 11H-3, 115-117 | 95.00 | 95.75 | 95.38 | 9.69 | 5 |
| FO Discoaster hamatus |
|
|
12H-2, 115–117 | 12H-2, 115–117 | 103.75 | 103.75 | 103.75 | 10.38 | 3 |
| LO Coccolithus miopelagicus | NN8 | CN6 | 12H-3, 40-42 | 12H-3, 40-42 | 104.50 | 104.50 | 104.50 | 10.80 | 4 |
| FO Catinaster coalitus |
|
|
12H-4, 40–42 | 12H-4, 115–117 | 106.00 | 106.75 | 106.38 | 10.90 | 4 |
| LO Discoaster kugleri | NN7 | CN5b | 14H-7, 40-42 | 14-CC | 129.50 | 130.05 | 129.78 | 11.50 | 4 |
| FO Discoaster kugleri |
|
|
17H-1, 40–42 | 17H-1, 115–117 | 149.00 | 149.75 | 149.38 | 11.80 | 4 |
| LCO Cyclicargolithus floridanus | NN6 | CN5a | 23X-6, 115–117 | 23X-CC | 202.35 | 202.77 | 202.56 | 13.19 | 2 |
| LO Sphenolithus heteromorphus |
|
|
25X-1, 40–42 | 25X-1, 115–117 | 213.40 | 214.15 | 213.78 | 13.60 | 4 |
| FO Reticulofenestra pseudoumbilica |
|
|
26X-3, 40–42 | 26X-CC | 226.10 | 226.71 | 226.41 | 13.95 | 3 |
Notes: FO = first occurrence, LO = last occurrence, LCO = last continuous occurrence. The NN zonation codes are after Martini (1971) and Martini and Müller (1986). The CN zonation codes are after Okada and Bukry (1980). 1 = Berggren et al. (1995a), 2 = Raffi and Flores (1995), 3 = Shackleton et al. (1995), 4 = Berggren et al. (1995b), 5 = Backman and Raffi (1997).