Table T12. Age-diagnostic biostratigraphic events, Site 1172.
Group | Hole | Bioevent | Age (Ma) |
Interval (cm) | Depth (mbsf) | Mean (mbsf) |
Error
bar (m) |
|||
---|---|---|---|---|---|---|---|---|---|---|
Top
|
Bottom
|
Top
|
Bottom
|
|||||||
R | 1172A | LO Stylatractus universus | 0.45 | 1H-CC | 2H-CC | 6.24 | 16.15 | 11.20 | 4.96 | |
N | 1172A | LO Pseudoemiliania lacunosa | 0.46 | 1H-CC | 2H-CC | 6.24 | 16.15 | 11.20 | 4.96 | |
N | 1172A | LO Discoaster brouweri | 1.95 | 2H-CC | 3H-CC | 16.15 | 25.45 | 20.80 | 4.65 | |
N | 1172A | LO Discoaster pentaradiatus | 2.40 | 3H-CC | 4H-CC | 25.45 | 35.11 | 30.28 | 4.83 | |
N | 1172A | LO Discoaster surculus | 2.50 | 4H-CC | 5H-CC | 35.11 | 44.50 | 39.81 | 4.70 | |
P | 1172A | FO Globorotalia inflata | 3.20 | 5H-CC | 6H-CC | 44.50 | 53.97 | 49.24 | 4.74 | |
N | 1172A | LO Reticulofenestra pseudoumbilica | 3.75 | 5H-CC | 6H-CC | 44.50 | 53.97 | 49.24 | 4.74 | |
N | 1172A | LO Amaurolithus primus | 4.60 | 6H-CC | 7H-CC | 53.97 | 63.79 | 58.88 | 4.91 | |
P | 1172A | LO Globorotalia pliozea | 4.60 | 7H-CC | 8H-CC | 63.79 | 73.22 | 68.51 | 4.72 | |
N | 1172A | LO Discoaster quinqueramus | 5.30 | 8H-CC | 9H-CC | 73.22 | 82.52 | 77.87 | 4.65 | |
P | 1172A | FO Globorotalia puncticulata | 5.30 | 9H-CC | 10H-CC | 82.52 | 92.10 | 87.31 | 4.79 | |
P | 1172A | FO Globorotalia conomiozea | 6.90 | 13H-CC | 14H-CC | 120.76 | 129.24 | 125.00 | 4.24 | |
P | 1172A | LO Paragloborotalia continuosa | 8.00 | 15H-CC | 16H-CC | 139.79 | 149.22 | 144.51 | 4.72 | |
P | 1172A | LO Paragloborotalia nympha | 10.10 | 17H-CC | 18H-CC | 158.27 | 167.85 | 163.06 | 4.79 | |
D | 1172A | LO Denticulopsis dimorpha | 10.70 | 23H-CC | 24H-CC | 215.27 | 225.15 | 220.21 | 4.94 | |
N | 1172A | LO Coccolithus miopelagicus | 11.00 | 25X-CC | 26X-CC | 228.01 | 235.84 | 231.93 | 3.91 | |
P | 1172A | LO Paragloborotalia mayeri | 11.40 | 19H-CC | 20H-CC | 177.76 | 186.44 | 182.10 | 4.34 | |
N | 1172A | LO Cyclicargolithus floridanus | 11.90 | 26X-CC | 27X-CC | 235.84 | 246.86 | 241.35 | 5.51 | |
P | 1172A | FO Paragloborotalia mayeri | 12.10 | 27X-CC | 28X-CC | 246.86 | 255.65 | 251.26 | 4.40 | |
R | 1172A | LAO Cyrtocapsella tetrapera | 12.50 | 26X-CC | 27X-CC | 235.84 | 246.86 | 241.35 | 5.51 | |
N | 1172A | LO Sphenolithus heteromorphus | 13.60 | 32X-CC | 33X-CC | 295.79 | 306.37 | 301.08 | 5.29 | |
P | 1172A | FO Orbulina suturalis | 15.10 | 28X-CC | 29X-CC | 255.65 | 266.27 | 260.96 | 5.31 | |
P | 1172A | FO Praeorbulina curva | 16.30 | 33X-CC | 34X-CC | 306.37 | 316.34 | 311.36 | 4.98 | |
N | 1172A | LO Calcidiscus premacintyrei | 17.40 | 34X-CC | 35X-CC | 316.14 | 324.92 | 320.53 | 4.39 | |
P | 1172A | FO Globoturborotalita connecta | 20.90 | 35X-CC | 36X-CC | 324.92 | 335.08 | 330.00 | 5.08 | |
P | 1172A | FO Globoquadrina dehiscens | 23.20 | 37X-CC | 38X-CC | 345.10 | 353.76 | 349.43 | 4.33 | |
N | 1172A | LO Reticulofenestra bisecta | 23.90 | 36X-CC | 37X-CC | 335.08 | 345.10 | 340.09 | 5.01 | |
N | 1172A | LO Chiasmolithus altus | 26.10 | 37X-CC | 38X-CC | 345.10 | 353.76 | 349.43 | 4.33 | |
P | 1172A | LO Subbotina angiporoides | 30.00 | 38X-CC | 39X, 2-5 | 353.76 | 356.15 | 354.96 | 1.19 | |
D | 1172A | FO Rocella vigilans (small) | 30.24 | 39X-2, 3 | 39X-3, 61 | 356.14 | 358.22 | 357.18 | 1.04 | |
D | 1172A | FO Cavitatus (Synedra) jouseanus | 30.62 | 39X-2, 3 | 39X-3, 61 | 356.14 | 358.22 | 357.18 | 1.04 | |
N | 1172A | LO Reticulofenestra umbilica | 32.30 | 39X-2, 143 | 39X-5, 63 | 356.69 | 360.39 | 358.54 | 1.85 | |
R | 1172A | LO Lychnocanoma amphitrite | 32.80 | 39X-CC | 40X-CC | 364.34 | 374.00 | 369.17 | 4.83 | |
R | 1172A | FO Eucyrtidium antiquum | 32.96 | 40X-CC | 41X-CC | 374.00 | 383.60 | 378.80 | 4.80 | |
C | 1172A | LO Ennedocysta partridgei | 33.30 | 39X-2, 135 | 39X-3, 122 | 357.45 | 358.82 | 358.14 | 0.69 | |
N | 1172A | LO Reticulofenestra reticulata | 35.00 | 39X-2, 143 | 39X-5, 63 | 356.69 | 360.39 | 358.54 | 1.85 | |
C | 1172A | LO Schematophora speciosa | 35.50 | 39X-3, 122 | 39X-5, 22 | 358.82 | 360.82 | 359.82 | 1.00 | |
R | 1172A | FO Lychnocanoma amphitrite | 36.4-37.3 | 46X-CC | 47X-CC | 431.66 | 441.29 | 436.48 | 4.82 | |
C | 1172A | FO Schematophora speciosa | 36.50 | 39X-5, 22 | 39X-6, 64 | 360.82 | 362.74 | 361.78 | 0.96 | |
R | 1172A | FO Eucyrtidium spinosum | 37.00 | 41X-CC | 42X-CC | 383.60 | 393.18 | 388.39 | 4.79 | |
C | 1172A | FCO Alterbidinium distinctum | 37.00 | 39X-CC | 40X-CC | 364.34 | 374.00 | 369.17 | 4.83 | |
R | 1172A | LO Spongatractus pachystylus | 37.3-38.8 | 48X-CC | 49X-CC | 450.85 | 460.45 | 455.65 | 4.80 | |
C | 1172A | LO Cerebrocysta bartonensis | 38.60 | 40X-CC | 50X-CC | 374.00 | 460.20 | 417.10 | 43.10 | |
C | 1172A | LAO Enneadocysta partridgei | 39.50 | 40X-CC | 50X-CC | 374.00 | 460.20 | 417.10 | 43.10 | |
N | 1172A | LO Chiasmolithus solitus | 40.40 | 42X-CC | 43X-CC | 393.18 | 402.83 | 398.01 | 4.82 | |
N | 1172A | FO Reticulofenestra reticulata | 42.00 | 43X-CC | 44X-CC | 402.83 | 412.47 | 407.65 | 4.82 | |
C | 1172A | FAO Enneadocysta partridgei | 43.00 | 50X-CC | 51X-CC | 460.20 | 476.19 | 468.20 | 8.00 | |
N | 1172A | FO Reticulofenestra umbilica | 43.70 | 45X-CC | 53X-CC | 422.11 | 498.80 | 460.46 | 38.35 | |
N | 1172B | FO Emiliania huxleyi | 0.26 | Top of core | 1H-CC | 0.00 | 2.79 | 1.40 | 1.40 | |
R | 1172B | LO Stylatractus universus | 0.45 | 1H-CC | 2H-CC | 2.79 | 12.73 | 7.76 | 4.97 | |
N | 1172B | LO Pseudoemiliania lacunosa | 0.46 | 1H-CC | 2H-CC | 2.79 | 12.73 | 7.76 | 4.97 | |
N | 1172B | LO Discoaster surculus | 2.50 | 3H-CC | 4H-CC | 22.10 | 31.77 | 26.94 | 4.84 | |
N | 1172B | LO Reticulofenestra pseudoumbilica | 3.75 | 4H-CC | 5H-CC | 31.77 | 41.31 | 36.54 | 4.77 | |
N | 1172B | LO Amaurolithus primus | 4.60 | 6H-CC | 7H-CC | 50.52 | 60.33 | 55.43 | 4.91 | |
N | 1172B | LO Discoaster quinqueramus | 5.30 | 9H-CC | 10H-CC | 79.20 | 89.05 | 84.13 | 4.93 | |
N | 1172B | LO Amaurolithus amplificus | 6.00 | 11H-CC | 12H-CC | 98.06 | 107.95 | 103.01 | 4.95 | |
N | 1172B | LO Discoaster loeblichii | 7.40 | 14H-CC | 15H-CC | 126.46 | 136.11 | 131.29 | 4.83 | |
N | 1172C | LO Pseudoemiliania lacunosa | 0.46 | Top of core | 1H-CC | 0.00 | 9.47 | 4.74 | 4.74 | |
N | 1172C | LO Discoaster brouweri | 1.95 | 2H-CC | 3H-CC | 19.06 | 28.40 | 23.73 | 4.67 | |
N | 1172C | LO Discoaster surculus | 2.50 | 3H-CC | 4H-CC | 28.40 | 37.89 | 33.15 | 4.75 | |
N | 1172C | LO Reticulofenestra pseudoumbilica | 3.75 | 4H-CC | 5H-CC | 37.89 | 47.36 | 42.63 | 4.74 | |
N | 1172C | LO Amaurolithus primus | 4.60 | 6H-CC | 7H-CC | 56.94 | 66.14 | 61.54 | 4.60 | |
N | 1172C | LO Discoaster quinqueramus | 5.30 | 8H-CC | 9H-CC | 76.22 | 85.81 | 81.02 | 4.80 | |
N | 1172C | LO Amaurolithus amplificus | 6.00 | 10H-CC | 11H-CC | 94.45 | 104.90 | 99.68 | 5.22 | |
N | 1172C | LO Discoaster loeblichii | 7.40 | 14H-CC | 15H-CC | 133.12 | 141.93 | 137.53 | 4.41 | |
C | 1172D | LO Hystrichokolpoma spinosa | 47.00 | 56X-CC | 12R-CC | 518.23 | 584.27 | 551.25 | 33.02 | |
C | 1172D | LO Wilsonidinium ornatum | 50.00 | 56X-CC | 12R-CC | 518.23 | 584.27 | 551.25 | 33.02 | |
C | 1172D | FO Wilsonidinium ornatum | 53.20 | 12R-CC | 13R-CC | 584.27 | 593.63 | 588.95 | 4.68 | |
C | 1172D | FO Hystrichokolpoma spinosa | 53.50 | 12R-CC | 13R-CC | 584.27 | 593.63 | 588.95 | 4.68 | |
C | 1172D | FO Deflandrea phosphoritica cpx | 55.00 | 13R-CC | 19R-CC | 593.63 | 645.91 | 619.77 | 26.14 | |
C | 1172D | LO Cerodinium boloniensis | ~58 | 19R-CC | 20R-CC | 645.91 | 660.85 | 653.38 | 7.47 | |
C | 1172D | LO Alisocysta reticulata | 60.95 | 22R-CC | 23R-CC | 673.03 | 682.06 | 677.55 | 4.51 | |
C | 1172D | LAO Manumiella druggii | ~63 | 23R-CC | 24R-CC | 682.06 | 699.02 | 690.54 | 8.48 | |
C | 1172D | FO Alisocysta reticulata | 63.27 | 23R-CC | 24R-CC | 682.06 | 699.02 | 690.54 | 8.48 | |
C | 1172D | FO Trithyrodinium evittii | 64.90 | 24R-5, 44-46 | 24R-5, 77-79 | 696.25 | 696.58 | 696.42 | 0.17 | |
N | 1172D | LO Arkhangelskiella cymbiformis | 65.00 | 24R-5, 41 | 25R-5, 40 | 696.11 | 705.70 | 700.91 | 4.80 | |
N | 1172D | LO Eiffellithus turriseiffelii | 65.00 | 24R-5, 41 | 25R-5, 40 | 696.11 | 705.70 | 700.91 | 4.80 |
Notes: See individual microfossil sections this chapter for top and bottom samples of event interval. Mean depth is the midpoint between the top and bottom sample of the event interval. Group: R = radiolarian, N = nannofossil, P = planktonic foraminifer, D = diatom, C = dinocyst. LO = last occurrence, FO = first occurrence, LAO = last abundant occurrence, FAO = first abundant occurrence, FCO = first consistent occurrence.