Table T4. Calcareous nannofossil datum levels, Site 1172.
| Hole | Bioevent | Age (Ma) |
Interval (cm) |
|
Depth (mbsf) | Mean (mbsf) |
Error
bar (m) |
||
|---|---|---|---|---|---|---|---|---|---|
|
Top
|
Bottom
|
|
Top
|
Bottom
|
|||||
| 1172A | |||||||||
| LO Pseudoemiliania lacunosa | 0.46 | 1H-CC | 2H-CC | 6.24 | 16.15 | 11.195 | 4.955 | ||
| LO Discoaster brouweri | 1.95 | 2H-CC | 3H-CC | 16.15 | 25.45 | 20.800 | 4.650 | ||
| LO Discoaster pentaradiatus | 2.40 | 3H-CC | 4H-CC | 25.45 | 35.11 | 30.280 | 4.830 | ||
| LO Discoaster surculus | 2.50 | 4H-CC | 5H-CC | 35.11 | 44.50 | 39.805 | 4.695 | ||
| LO Reticulofenestra pseudoumbilica | 3.75 | 5H-CC | 6H-CC | 44.50 | 53.97 | 49.235 | 4.735 | ||
| LO Amaurolithus primus | 4.60 | 6H-CC | 7H-CC | 53.97 | 63.79 | 58.880 | 4.910 | ||
| LO Discoaster quinqueramus | 5.30 | 8H-CC | 9H-CC | 73.22 | 82.52 | 77.870 | 4.650 | ||
| LO Coccolithus miopelagicus | 11.00 | 25X-CC | 26X-CC | 228.01 | 235.84 | 231.925 | 3.915 | ||
| LO Cyclicargolithus floridanus | 11.90 | 26X-CC | 27X-CC | 235.84 | 246.86 | 241.350 | 5.510 | ||
| LO Sphenolithus heteromorphus | 13.60 | 32X-CC | 33X-CC | 295.79 | 306.37 | 301.080 | 5.290 | ||
| LO Calcidiscus premacintyrei | 17.40 | 34X-CC | 35X-CC | 316.14 | 324.92 | 320.530 | 4.390 | ||
| LO Reticulofenestra bisecta | 23.90 | 36X-CC | 37X-CC | 335.08 | 345.10 | 340.090 | 5.010 | ||
| LO Chiasmolithus altus | 26.10 | 37X-CC | 38X-CC | 345.10 | 353.76 | 349.430 | 4.330 | ||
| LO Reticulofenestra umbilica | 32.30 | 39X-2, 143 | 39X-5, 63 | 356.69 | 360.39 | 358.540 | 1.850 | ||
| LO Reticulofenestra reticulata | 35.00 | 39X-2, 143 | 39X-5, 63 | 356.69 | 360.39 | 358.540 | 1.850 | ||
| LO Chiasmolithus solitus | 40.40 | 42X-CC | 43X-CC | 393.18 | 402.83 | 398.005 | 4.825 | ||
| LO Reticulofenestra reticulata | 42.00 | 43X-CC | 44X-CC | 402.83 | 412.47 | 407.650 | 4.820 | ||
| FO Reticulofenestra umbilica | 43.70 | 45X-CC | 53X-CC | 422.11 | 498.80 | 460.455 | 38.345 | ||
| 1172B | |||||||||
| FO Emiliania huxleyi | 0.26 | Top of core | 1H-CC | 0.00 | 2.79 | 1.400 | 1.400 | ||
| LO Pseudoemiliania lacunosa | 0.46 | 1H-CC | 2H-CC | 2.79 | 12.73 | 7.760 | 4.970 | ||
| LO Discoaster surculus | 2.50 | 3H-CC | 4H-CC | 22.10 | 31.77 | 26.940 | 4.840 | ||
| LO Reticulofenestra pseudoumbilica | 3.75 | 4H-CC | 5H-CC | 31.77 | 41.31 | 36.540 | 4.770 | ||
| LO Amaurolithus primus | 4.60 | 6H-CC | 7H-CC | 50.52 | 60.33 | 55.430 | 4.910 | ||
| LO Discoaster quinqueramus | 5.30 | 9H-CC | 10H-CC | 79.20 | 89.05 | 84.130 | 4.930 | ||
| LO Amaurolithus amplificus | 6.00 | 11H-CC | 12H-CC | 98.06 | 107.95 | 103.010 | 4.950 | ||
| LO Discoaster loeblichii | 7.40 | 14H-CC | 15H-CC | 126.46 | 136.11 | 131.290 | 4.830 | ||
| 1172C | |||||||||
| LO Pseudoemiliania lacunosa | 0.46 | Top of core | 1H-CC | 0.00 | 9.47 | 4.735 | 4.735 | ||
| LO Discoaster brouweri | 1.95 | 2H-CC | 3H-CC | 19.06 | 28.40 | 23.730 | 4.670 | ||
| LO Discoaster surculus | 2.50 | 3H-CC | 4H-CC | 28.40 | 37.89 | 33.145 | 4.745 | ||
| LO Reticulofenestra pseudoumbilica | 3.75 | 4H-CC | 5H-CC | 37.89 | 47.36 | 42.625 | 4.735 | ||
| LO Amaurolithus primus | 4.60 | 6H-CC | 7H-CC | 56.94 | 66.14 | 61.540 | 4.600 | ||
| LO Discoaster quinqueramus | 5.30 | 8H-CC | 9H-CC | 76.22 | 85.81 | 81.015 | 4.795 | ||
| LO Amaurolithus amplificus | 6.00 | 10H-CC | 11H-CC | 94.45 | 104.90 | 99.675 | 5.225 | ||
| LO Discoaster loeblichii | 7.40 | 14H-CC | 15H-CC | 133.12 | 141.93 | 137.525 | 4.405 | ||
| 1172D | |||||||||
| LO Reticulofenestra umbilica | 32.30 | 2R-CC | 3R-CC | 362.97 | 372.64 | 367.805 | 4.835 | ||
| LO Chiasmolithus solitus | 40.40 | 4R-CC | 5R-CC | 505.38 | 512.97 | 509.175 | 3.795 | ||
| LO Arkhangelskiella cymbiformis | 65.00 | 24R-5,41 | 25R-5, 40 | 696.11 | 705.70 | 700.905 | 4.795 | ||
| LO Eiffellithus turriseiffelii | 65.00 | 24R-5,41 | 25R-5, 40 | 696.11 | 705.70 | 700.905 | 4.795 | ||
Notes: The mean depth of each datum is assigned at the midpoint between two samples. LO = last occurrence, FO = first occurrence.