Table T7. Calcareous nannofossil datums, ages, and depths, Site 1256.
Datum
Zone (base)
Core, section, interval (cm)
Depth (mbsf)
Age
Top
Bottom
Top
Bottom
Mean
(Ma)


206-1256B- 206-1256B-



FO Emiliania huxleyi NN21 1H-2, 67 1H-4, 60 2.17 5.10 3.64 0.26
LO Pseudoemiliania lacunosa NN20 1H-CC 2H-2, 113 5.77 8.70 7.24 0.46
LO Discoaster brouweri NN19 2H-CC 3H-4, 40-42 15.75 20.50 18.13 1.95
LO Discoaster pentaradiatus NN18 3H-5, 83 3H-CC 22.43 25.22 23.83 2.52
LO Discoaster surculus NN17 3H-CC 4H-2, 40-42 25.22 27.00 26.11 2.53
LO Sphenolithus abies/neoabies
4H-2, 40-42 4H-4, 40-42 27.00 30.00 28.50 3.66
LO Reticulofenestra pseudoumbilicus NN16 4H-4, 40-42 4H-6, 40-42 30.00 33.00 31.50 3.82
FO Ceratolithus rugosus NN13 5H-2, 40-42 5H-3, 40-42 36.50 38.00 37.25 5.1
LO Discoaster quinqueramus NN12 5H-5, 40-42 5H-6, 93-100 41.00 43.03 42.02 5.6
FO Discoaster berggrenii NN11 9H-2, 80 9H-CC 74.90 82.24 78.57 8.6
LO Discoaster hamatus NN10 9H-CC 10H-4, 100 82.24 87.60 84.92 9.4
FO Discoaster hamatus NN9 11H-CC 12H-4, 60 101.28 106.20 103.74 10.38
FO Catinaster coalitus NN8 12H-4, 60 12H-5, 52 106.20 107.62 106.91 10.9
FO Discoaster kugleri NN7 16H-CC 17H-3, 112 148.59 152.72 150.66 11.8
LO Cyclicargolithus floridanus
23X-3, 97 23X-CC 197.67 202.53 200.10 13.2
LO Sphenolithus heteromorphus NN6 24X-CC 25X-2, 90 209.88 215.40 212.64 13.6

Note: FO = first occurrence, LO = last occurrence. This table is also available in ASCII.