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Table T9. Biostratigraphic events and chronostratigraphy, Hole U1356A. (See table notes.)

Age
source 		Event Age Core, section, interval (cm) Depth (mbsf) Depth
error
(m)
Published
(Ma) 		Error
(m.y.)
Top Bottom Top Bottom Median
        318-U1356A- 318-U1356A-
R FO Helotholus vema 4.20   0 1R-1, 3–5 0.00 0.03 0.02 0.02
D LO Rouxia peragalli 4.67 0.09 0 1R-1, 3–5 0.00 0.03 0.02 0.02
D LO Denticulopsis simonsenii 4.89 0.06 0 1R-1, 3–5 0.00 0.03 0.02 0.02
D FO Rouxia peragalli 7.00 0.62 1R-1, 3–5 1R CC 0.03 4.55 2.29 2.26
D FO Fragilariopsis clementia 7.03 0.68 1R-1, 3–5 1R CC 0.03 4.55 2.29 2.26
D FO Rouxia californica 8.62 0.12 1R-1, 3–5 1R CC 0.03 4.55 2.29 2.26
D FO Thalassiosira inura 4.74 0.03 1R-2, 138–139 1R CC 2.86 4.55 3.71 0.84
D FO Thalassiosira oliverana 6.18 1.04 1R-2, 138–139 1R CC 2.86 4.55 3.71 0.84
D FO Thalassiosira torokina 7.23 0.80 1R-2, 138–139 1R CC 2.86 4.55 3.71 0.84
R LO Cycladophora humerus 10.40   1R-CC 3R-CC 4.55 19.75 12.15 7.60
D LO Denticulopsis ovata 9.64 1.07 3R-CC 4R-CC 19.75 28.34 24.05 4.29
D LO Denticulopsis dimorpha var. areolata 10.25 0.53 3R-CC 4R-CC 19.75 28.34 24.05 4.29
D LO Denticulopsis dimorpha 10.28 0.49 3R-CC 4R-CC 19.75 28.34 24.05 4.29
D FO Thalassiothrix miocenica 10.14 0.44 4R-CC   28.34   28.34 0.00
D FO Denticulopsis ovata 11.09 0.01 6R-CC 7R-CC 47.38 56.94 52.16 4.78
D FO Denticulopsis dimorpha var. areolata 10.31 0.53 7R-CC 9R-CC 56.94 76.21 66.58 9.63
D FO Denticulopsis dimorpha 12.50 0.04 8R-CC 9R-CC 66.56 76.21 71.39 4.82
R FO Cycladophoa spongothrax 12.60   10R-CC 12R-CC 85.85 109.28 97.57 11.72
D FO Denticulopsis praedimorpha 12.97 0.16 8R-CC 16R-CC 66.56 143.52 105.04 38.48
PM Chron C5AA (y) 13.02   14R-5, 80 15R-1, 10 130.40 133.90 132.15 1.75
R FO Actinomma golowini 13.50   14R-CC 15R-CC 130.65 141.70 136.18 5.52
D FO Nitzschia denticuloides 13.49 0.12 21R-CC 22-RCC 193.79 203.91 198.85 5.06
R FO Cycladophora humerus 14.10   21R-CC 22R-CC 193.79 203.91 198.85 5.06
PM Chron C5ACn (o) 14.10   22R-2, 75 22R-2, 90 203.15 203.30 203.23 0.08
D FO Denticulopsis simonsenii 14.16 0.01 23R-CC 24R-CC 212.02 222.30 217.16 5.14
D LO Denticulopsis maccollumii 14.33 0.04 24R-CC 25R-CC 222.30 229.90 226.10 3.80
D FO Eucampia antarctica 10.46 0.45 28R-CC 29R-CC 258.56 268.18 263.37 4.81
D FO Actinocyclus ingens var. nodus 14.60 0.11 28R-CC 29R-CC 258.56 268.18 263.37 4.81
PM Chron CC5B.2n (y) 15.03   30R-2, 50 30R-2, 75 279.50 279.75 279.63 0.13
D FO Denticulopsis lauta 15.69 0.01 31R-CC 33R-CC 287.06 307.64 297.35 10.29
D LO Cavitatus jouseanus 14.47 0.07 34R-CC 35R-CC 321.13 331.44 326.29 5.15
PM Chron C5C.1n (o) 16.27   39R-1, 35 39R-1, 65 363.95 364.25 364.10 0.15
D FO Actinocyclus ingens 15.87 0.03 38R-CC 41R-CC 354.05 386.95 370.50 16.45
R FO Eucyrtidium punctatum 17.00   41R-CC     386.95 386.95 0.00
D FO Denticulopsis maccollumii 17.01 0.14 41R-CC   386.95   386.95 0.00
PM Chron C5Cn.3n (o) 16.72   42R-2, 59 43R-1, 25 394.21 402.25 398.23 4.02
PL FO Impagidinium patulum 16.20   43R-CC, 21–26 44R-CC, 25–28 404.90 412.60 408.75 3.85
F LO Globigerina euapertura 23.00     45R-CC   422.27 422.27 0.00
F LO Catapsydrax dissimilis 17.15   46R-CC   434.66   434.66 0.00
PM Chron C5Dn (y) 17.235   44R-1, 60 45R-1, 15 412.20 421.35 416.78 4.575
PM Chron C5Dn (o) 17.533   46R-2, 60 46R-2, 65 432.84 432.89 432.87 0.02
Oligocene–Miocene boundary (in hiatus) 23.03   46R-CC 47R-3, 126–127 434.66 444.59 439.63 4.97
F LO Globigerina labiacrassata 26.80     46R-CC   434.66 434.66 0.00
CN LO Reticulofenestra bisecta 23.12   47R-3, 126–127 47R-4, 31–32 444.59 444.94 444.77 0.18
CN LO Chiasmolithus altus 25.56   47R-CC 48R-1, 6–7 446.02 449.97 448.00 1.98
F FO Globigerina connecta 21.50     50R-CC   469.86 469.86 0.00
CN LO Reticulofenesta bisecta 23.00   50R-CC 55R-CC 469.86 519.11 494.49 24.63
PL FO Filisphaera filifera 23.95   58R-CC 59R-CC 546.29 556.73 551.51 5.22
PM Chron C7An (o) 25.09   68R-2, 75 68R-2, 80 643.65 643.70 643.68 0.03
PM Chron C8n.1n (y) 25.30   69R-2, 15 69R-2, 25 652.50 652.60 652.55 0.05
PM Chron C8n.2n (o) 26.15   71R-6, 115 72R-1, 10 678.06 679.90 678.98 0.92
F FO Rectuvigerina stonei 16.10   73R-CC   695.76   695.76 0.00
F LO Rectuvigerina stonei 28.50     73R-CC   695.76 695.76 0.00
PM Chron C9n (o) 27.83   76R-6, 35 76R-6, 40 725.06 725.11 725.09 0.02
PM Chron C11n.1n (o) 29.74   82R-6, 35 82R-6, 40 782.65 782.70 782.68 0.03
PM Chron C12n (y) 30.63   86R-2, 115 86R-7, 10 816.93 821.88 819.41 2.48
CN LO Reticulofenestra umbilicus 31.56   93R-CC 94R-4, 29–30 880.72 885.93 883.33 2.60
CN LO Isthmolithus recurvus 32.63   93R-CC 94R-4, 29–30 880.72 885.93 883.33 2.60
PL LO Apectodinium spp. 48.60   96R-CC 97R-CC 886.89 892.00 889.45 2.55
PL FO “Forma T” 33.60   94R-CC 95R-1, 97–100 886.94 892.00 889.47 2.53
Eocene–Oligocene boundary (in hiatus) 33.90   94R-CC 95R-1, 97–100 886.94 892.00 889.47 2.53
PL LO Membranophoridium perforatum 47.90   95R-1, 97–100 95R-3, 25–26 892.00 894.10 893.05 1.05
PL FO Charlesdowniea edwardsii 50.00   95R-CC 96R-CC 895.66 900.95 898.31 2.65
PL FO Arachnodinium antarcticum 51.50   97R-CC 98R-1, 33–34 911.68 925.50 918.59 6.91
PL LO Palaeocystodinium golzowense 50.80 0.20 97R-CC 98R-1, 33–34 911.68 925.50 918.59 6.91
PM Chron C23n.1n (y) 50.43   98R-3, 120 98R-3, 125 923.44 923.49 923.47 0.02
PM Chron C23n.1n (o) 50.73   99R-1, 35 99R-1, 80 929.62 929.65 929.64 0.01
PL FO Hystrichokolpoma spinosa 51.90   99R-CC, 30–35 100R-1, 75–76 933.52 939.00 936.26 2.74
PL LO Dracodinium waipawaense 52.60   100R-1, 75–76 101R-CC 939.00 951.92 945.46 6.46
PL FO Octodinium askiniae 53.70 0.20 100R-1, 75–76 101R-CC 939.00 951.92 945.46 6.46
PM Chron C23n.2n (y) 51.06   100R-1, 100 101R-1, 15 940.10 948.95 944.53 4.43
PM Chron C23n.2n (o) 51.90   101R-1, 100 101R-2, 90 949.80 951.20 950.50 0.70
PL FO Hystrichokolpoma rigaudiae 53.60 0.20 101R-CC 102R-CC 951.92 959.15 955.54 3.62
PM Chron C24n.1n (y) 52.65   102R-1, 60 103R-1, 65 959.00 968.65 963.83 4.82
PM Chron C24n.1n (o) 53.00   104R-1, 95 104R-1, 100 978.55 978.60 978.58 0.02
PM Chron C24n.3n (y) 53.29   104R-6, 65 105R-1, 10 985.36 987.30 986.33 0.97
PL Acme Apectodinium spp. 53.80 0.20 105R-CC 105R-CC 995.27 995.27 995.27 0.00
PM Chron C24n.3n (o) 53.81   106R-1, 95 106R-1, 100 997.75 997.80 997.78 0.02
F LO Acarinina wilcoxensis 51.70     106R-CC   1000.03 1000.03 0.00
F FO Acarinina wilcoxensis 55.55   106R-CC   1000.03   1000.03 0.00

Notes: Age source: See “Paleomagnetism.” These data are used to plot Figure F4. D = diatoms, R = radiolarians, CN = calcareous nannofossils, PL = palynomorphs, F = foraminifers, PM = paleomagnetic event. FO = first occurrence, LO = last occurrence, y = young, o = old.

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