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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