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Table T6. Biostratigraphic events and chronostratigraphy, Site U1361. (See table notes.)

Type Events Age Core, section, interval (cm) Depth (mbsf) Depth
error
(m)
Published
(Ma)
Error
(m.y.)
Top Bottom Top Bottom Median
        318-U1361A- 318-U1361A-
D LO Actinocyclus ingens 0.535 0.035 1H-CC 2H-CC 9.03 19.04 14.04 5.01
R LO Antarctissa cylindrica 0.600   1H-CC 4H-CC 9.03 36.53 22.78 13.75
D LO Thalassiosira elliptipora 0.675 0.035 2H-CC 3H-CC 19.04 28.26 23.65 4.61
D LO Thalassiosira fasciculata 0.890 0 1H-CC 3H-CC 9.03 28.26 18.65 9.62
D LO Fragilariopsis barronii 1.240 0.05 2H-CC 3H-CC 19.04 28.26 23.65 4.61
D FO Fragilariopsis separanda 1.410 0.04 2H-CC 3H-CC 19.04 28.26 23.65 4.61
D LO Rouxia antarctica 1.495 0.015 2H-CC 3H-CC 19.04 28.26 23.65 4.61
D FO Fragilariopsis obliquecostata 1.695 0.035 4H-CC 5H-CC 36.53 47.42 41.98 5.45
PM Chron C2n (y) 1.778   4H-3, 130 4H-3, 135 32.30 32.35 32.33 0.03
Pliocene/Pleistocene boundary 1.81   4H-3, 135 4H-5, 85 32.35 34.80 33.58 1.23
PM Chron C2n (o) 1.945   4H-5, 85 4H-5, 85 34.80 34.80 34.80 0.00
D FO Thalassiosira elliptipora 2.030 0.03 4H-CC 5H-CC 36.53 47.42 41.98 5.45
D FO Fragilariopsis kerguelensis 2.195 0.015 3H-CC 4H-CC 28.26 36.53 32.40 4.14
R LO Helotholus vema 2.300   4H-CC 6H-CC 36.53 56.72 46.63 10.10
D LO Thalassiosira insigna 2.475 0.025 5H-CC 6H-CC 47.42 56.72 52.07 4.65
D LO Fragilariopsis weaveri 2.490 0.04 6H-CC 7H-CC 56.72 66.55 61.64 4.92
D LO Thalassiosira inura 2.540 0.01 5H-CC 6H-CC 47.42 56.72 52.07 4.65
PM Chron C2An.1n (y) 2.581   6H-2, 120 6H-2, 125 49.70 49.75 49.73 0.02
PM Chron C2An.1r (y) 3.032   7H-6, 55 7H-6, 60 64.55 64.60 64.58 0.02
PM Chron C2An.2n (y) 3.116   8H-1, 70 8H-1, 70 66.70 66.70 66.70 0.00
D FO Thalassiosira vulnifica 3.150 0.03 6H-CC 7H-CC 56.72 66.55 61.64 4.92
PM Chron C2An.2r (y) 3.207   8H-4, 115 8H-4, 120 71.67 71.72 71.70 0.02
D FO Thalassiosira insigna 3.250 0.11 6H-CC 7H-CC 56.72 66.55 61.64 4.92
PM Chron C2An.3n (y) 3.330   8H-6, 100 9H-1, 40 74.52 75.90 75.21 0.69
D FO Fragilariopsis weaveri 3.530 0.02 7H-CC 8H-CC 66.55 75.17 70.86 4.31
PM Chron C2Ar (y) 3.596   9H-2, 45 9H-2, 50 77.45 77.50 77.48 0.02
PM Chron C3n.1n (y) 4.187   11H-4, 120 11H-4, 125 100.20 100.25 100.23 0.02
R FO Helotholus vema 4.200   11H-CC 12H-CC 104.26 111.32 107.79 3.53
R LO Eucyrtidium pseudoinflatum 4.200   10H-CC 11H-CC 94.99 104.26 99.63 4.64
D FO Fragilariopsis barronii 4.400 0.12 11H-CC 12H-CC 104.26 111.32 107.79 3.53
PM Chron C3n.2n (o) 4.631   12H-6, 40 12H-6, 40 109.69 109.69 109.69 0.00
D FO Thalassiosira inura 4.740 0.03 14H-CC 15X-CC 132.57 141.76 137.17 4.60
D FO Shionodiscus oestrupii 4.875 0.075 12H-CC 13H-CC 111.32 122.57 116.95 5.63
PM Chron C3n.4n (y) 4.997   13H-5, 80 13H-5, 85 120.30 120.35 120.33 0.02
R LCO Lychnocanium grande 5.000   12H-CC 18X-CC 111.32 167.10 139.21 27.89
PM Chron C3n.4n (o) 5.235   14H-1, 65 14H-1, 70 123.65 123.70 123.68 0.03
Miocene/Pliocene boundary 5.33   14H-1, 70 16H-2, 30 123.70 143.80 133.75 10.05
D LO Thalassiosira miocenica 5.910 1.01 17H-CC 18X-CC 160.34 167.10 163.72 3.38
D LO Fragilariopsis donahuensis 5.980 0.88 17H-CC 18X-CC 160.34 167.10 163.72 3.38
PM Chron C3An.1n (y) 6.033   16H-2, 30 16H-2, 35 143.80 143.85 143.83 0.02
D FO Thalassiosira oliverana 6.175 1.035 22X-CC 23X-CC 205.21 215.90 210.56 5.35
PM Chron C3An.2n (o) 6.733   17X-2, 80 17X-2, 85 153.80 153.85 153.83 0.02
D LO Thalassiosira mahoodii 6.850   18X-CC 20X-CC 167.10 184.41 175.76 8.66
D FO Thalassiosira torokina 7.230 0.8 23X-CC 24X-CC 215.90 219.12 217.51 1.61
D FO Thalassiosira miocenica 7.290 1.04 18X-CC 20X-CC 167.10 184.41 175.76 8.66
R FO Acrosphaera? labrata 7.800   20X-CC 22X-CC 184.41 205.21 194.81 10.40
D FO Thalassiosira mahoodii 8.470   27X-CC 28X-CC 253.00 263.91 258.46 5.46
D LAO Denticulopsis simonsenii 8.625 0.055 22X-CC 23X-CC 205.21 215.90 210.56 5.35
R LO Cycladophora spongothrax 9.100   23X-CC 26X-CC 215.90 244.24 225.36 9.46
D LO Denticulopsis ovata 9.640 1.07 31X-CC 32X-CC 283.09 302.10 292.60 9.51
D LO Denticulopsis dimorpha var. areolata 10.245 0.525 33X-CC 34X-CC 311.68 321.07 316.38 4.69
R FO Acrosphaera australis 10.400   30X-CC 31X-CC 273.55 283.09 278.32 4.77
R FO Eucyritidium pseudoinflatum 10.500   31X-CC   283.09      
D LCO Denticulopsis dimorpha s.l. 10.775 0.195 33X-CC 34X-CC 311.68 321.07 316.38 4.69
R LO Actinomma golowini 10.800     34X-CC   321.07    
PM Chron C5n.2n (o) 11.040   34X-2, 138 34X-3, 20 314.48 314.80 314.64 0.16
PM Chron C5An.1n (y) 12.014   41X-1, 44 41X-5, 3 378.84 384.43 381.64 2.80
D FO Denticulopsis dimorpha s.l. 12.500 0.04 39R-CC 40X-CC 369.26 378.24 373.75 4.49

Notes: D = diatoms, R = radiolarians, PM = paleomagnetic event. FO = first occurrence, LAO = last abundant occurrence, LCO = last common occurrence, LO = last occurrence. y = young, o = old.

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