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.