IODP Proceedings, Volume 317 Site U1352, Table T5. Microfossil bioevents, Site U1352. Notes: CN = calcareous nannofossil, BF = benthic foraminifer, PF = planktonic foraminifer, DT = diatom, BB = bolboform. LO = lowest occurrence, HO = highest occurrence, HCO = highest common occurrence, LCO = lowest common occurrence. ODP = Ocean Drilling Program. Core, section top Core, section bottom Microfossil Bioevents, unconformities, and epoch boundaries Age (Ma) Depth CSF-A (m) Top Depth CSF-A (m) Bottom Depth CSF-A (m) Midpoint Depth CSF-A (m) ± Comments 317-U1352A- 317-U1352A- 1H-CC 5H-CC CN Emiliania huxleyi Zone (NN21a) 0–0.29 (± 0.03) 4.21 43.06 23.64 19.43 317-U1352B- 317-U1352B- 12H-CC 13H-CC CN LO Emiliania huxleyi (NN21 base) 0.29 (± 0.03) 112.82 121.10 116.96 4.14 14H-CC 15H-CC BF HO Proxifrons advena ~0.40 (± 0.2) 130.26 141.14 136.28 5.42 16H-CC 17H-CC BF HO Bolivinita pliozea 0.60 (± 0.2) 150.74 155.99 153.45 2.66 HO controlled by bathymetry? 17H-CC 18H-CC CN HO Pseudoemiliania lacunosa (NN20 base) 0.44 (± 0.01) 155.99 164.18 160.09 4.09 20H-CC 20H-CC BF Loxostomum karreianum 0–0.34 (± 0.2) 180.38 180.38 180.38 One specimen 20H-CC 21H-CC PF LO Hirsutella hirsuta 0.34 (± 0.1) 180.38 189.06 184.72 4.34 21H-CC 22H-CC PF HO Globoconella puncticuloides 0.5 (± 0.2) 189.06 198.87 193.97 4.91 Recalibrated at Site U1352 22H-CC 23H-CC DT HO Fragilariopsis fossilis 0.70 (± 0.03) 198.87 208.46 208.67 0.00 29H-CC 30H-CC CN HCO Reticulofenestra asanoi 0.91 (± 0.01) 257.09 266.92 262.01 4.92 34H-CC 35H-CC CN LCO Reticulofenestra asanoi 1.14 (± 0.01) 292.54 295.24 293.89 1.35 42X-CC 43X-CC CN HO Gephyrocapsa >6.5 μm 1.24 (± 0.05) 348.59 360.08 354.34 5.75 43X-CC 44X-CC CN HO Gephyrocapsa >5.5 μm 1.26 (± 0.05) 360.08 369.84 364.96 4.88 46X-CC 47X-CC CN HO Helicosphaera sellii 1.34 (± 0.01) 388.95 398.56 393.76 4.81 49X-CC 50X-CC CN LO Gephyrocapsa >5.5 μm 1.56 (± 0.05) 412.30 427.34 419.82 7.52 54X-CC 55X-CC CN LO Gephyrocapsa >4 μm 1.69 (± 0.05) 463.67 469.84 466.76 3.08 55X-CC 55X-CC DT ?HO Actinocyclus karstenii 1.73 (± 0.15) 469.84 469.84 470.06 Event not well defined 55X-CC 56X-CC CN LO Gephyrocapsa caribbeanica 1.73 (± 0.01) 469.84 484.83 477.34 7.50 57X-CC 61X-CC Pliocene/Pleistocene boundary 1.81 491.74 525.34 508.54 16.80 57X-CC 61X-CC Unconformity, late Pliocene missing? 491.74 525.34 519.98 5.37 60X-CC 61X-CC PF LO Truncorotalia crassula <2.4 (± 0.1) 514.61 525.34 519.98 5.37 60X-CC 61X-CC PF HO Truncorotalia crassaconica? >3.09 (± 0.1) 514.61 525.34 519.98 5.37 61X-CC 62X-CC CN HO Reticulofenestra ampla 2.78 (± 0.1) 525.34 542.58 533.96 8.62 Event not well defined 64X-CC 65X-CC BF HO Haeuslerella morgani 3.62–5.30 (± 1.0) 557.28 562.35 560.15 2.52 65X-CC 65X-CC PF Truncorotalia crassaformis upper dextral coiling zone? 2.45–3.04 (± 0.1) 562.35 562.35 562.35 Poorly constrained 67X-CC 68X-CC PF HO Zeaglobigerina woodi (rare) ?>2.7 (± 0.1) 573.33 583.56 578.45 5.12 HCO dated 2.7 Ma 317-U1352C- 317-U1352C- 26R-CC 27R-CC PF HO Globoconella subconomiozea 3.35 (± 0.1) 855.29 864.94 860.12 4.83 29R-CC 30R-CC CN HO Reticulofenestra pseudoumbilicus 3.70 (± 0.05) 884.91 894.37 889.64 4.73 56R-CC 57R-CC PF LO Globoconella inflata s.s. 4.3 (± 0.3) 1147.41 1155.03 1151.22 3.81 56R-CC 57R-CC PF HO Globoconella puncticulata s.s. 4.3 (± 0.3) 1147.41 1155.03 1151.22 3.81 61R-CC 62R-CC PF HO Globoconella pliozea 4.49 (± 0.1) 1197.57 1206.27 1201.92 4.35 64R-CC 65R-CC BF HO Hopkinsina mioindex 3.62 (± 0.5) 1217.80 1222.21 1220.01 2.20 HO controlled by bathymetry? 72R-CC 73R-CC PF LO Globoconella puncticulata s.s. 5.30 (± 0.1) 1266.38 1283.95 1275.17 8.79 72R-CC 73R-CC Miocene/Pliocene boundary 5.33 1266.38 1283.95 1275.17 8.79 Conformable? 72R-CC 73R-CC PF HO Globoconella sphericomiozea s.s. 5.30 (± 0.1) 1266.38 1283.95 1275.17 8.79 84R-CC 85R-CC BF LO Uvigerina pliozea 5.30 (± 0.1) 1342.48 1352.39 1347.44 4.96 90R-CC 91R-CC PF LO Globoconella sphericomiozea s.s. 5.60 (± 0.1) 1394.62 1409.66 1402.14 7.52 LO at unconformity 90R-CC 91R-CC Unconformity, at least 5.0 m.y. missing 1394.62 1409.66 1402.14 7.52 90R-CC 91R-CC PF HO Globoconella miotumida 7.07 (± 0.1) 1394.62 1409.66 1402.14 7.52 HO at unconformity 90R-CC 91R-CC BB Bolboforma metzmacheri s.s. 8.85–9.62 (± 0.02) 1409.66 1409.58 1409.62 -0.04 BBs reworking or bioturbated into BBs and eroded? 90R-CC 91R-CC BB Bolboforma subfragoris s.l. 10.58–11.64 (± 0.02) 1394.62 1409.66 1402.14 7.52 BBs reworking? 93R-CC 94R-CC BB HO Bolboforma subfragoris s.l.? 10.58 (± 0.02) 1438.43 1438.43 1438.43 HO without B. metzmacheri 94R-CC 94R-CC BF Loxostomum truncatum 8.95–12.76 (± 0.5) 1438.43 1438.43 1438.43 One specimen 94R-CC 95R-CC CN HO Coccolithus miopelagicus 11.02 (± 0.05) 1438.43 1446.91 1442.67 4.24 94R-CC 95R-CC BF Notorotalia wilsoni >11.01 (± 1.0) 1438.43 1446.91 1442.67 4.24 Poorly dated HO 95R-CC 96R-CC PF HCO Paragloborotalia mayeri s.l. 10.97 (± 0.02) 1438.43 1446.91 1442.67 4.24 95R-CC 96R-CC BF LO Notorotalia taranakia 11.01 (± 0.5) 1446.91 1448.00 1447.46 0.55 95R-CC 96R-CC BF LO Haeuslerella morgani ~11.01 (± 0.5) 1446.91 1448.00 1447.46 0.55 101R-CC 102R-CC PF LO Bolboforma subfragoris s.l. 11.64 (± 0.02) 1486.78 1496.50 1491.64 4.86 101R-CC 102R-CC Unconformity, at least 1.3 m.y. missing 1486.78 1496.50 1491.64 4.86 101R-CC 102R-CC CN HO Calcidiscus premacintyrei 12.45 (± 0.05) 1486.78 1496.50 1491.64 4.86 101R-CC 102R-CC PF HO Globoconella conica 12.98 (± 0.1) 1486.78 1496.50 1491.64 4.86 102R-CC 103R-CC CN HCO Cyclicargolithus floridanus 13.33 (± 0.05) 1496.50 1515.94 1506.22 9.72 102R-CC 103R-CC PF LCO Paragloborotalia mayeri s.l. 13.33 (± 0.3) 1496.50 1515.94 1506.22 9.72 102R-CC 103R-CC PF HO Globoconella miozea 13.33–15.1 1496.50 1515.94 1506.22 9.72 HO in Lillburnian, poorly dated 104R-CC 105R-CC BF ?LO Hopkinsina mioindex <15.10 (± 0.5) 1525.67 1534.20 1529.94 4.27 HO controlled by bathymetry? 114R-CC 115R-CC CN HO Sphenolithus heteromorphus 13.53 (± 0.1) 1622.61 1632.61 1627.61 5.00 Could be HO or increase 119R-CC 120R-CC CN ?HCO Discoaster deflandrei 15.80 (± 0.1) 1670.41 1669.36 1669.89 -0.53 Caved?; event below Core 120R in 121R? 123R-CC 124R-CC PF ?HO Globoconella praescitula 16.70 (± 0.3) 1697.39 1707.63 1702.51 5.12 125R-CC 126R-CC PF HO Globoconella zealandica 16.70 (± 0.3) 1714.42 1725.45 1719.94 5.52 129R-CC 130R-CC CN LCO Sphenolithus heteromorphus 17.71 (± 0.1) 1749.66 1760.69 1755.18 5.51 131R-CC 132R-CC PF HO Globoconella incognita 18.3 (± 0.3) 1769.18 1777.59 1773.39 4.20 132R-CC 133R-CC CN ?HCO Sphenolithus belemnos 17.95 (± 0.05) 1777.59 1789.60 1783.60 6.01 Possibly HO, not HCO 132R-CC 133R-CC PF HO Catapsydrax dissimilis 18.7 (± 0.3) 1777.59 1789.60 1783.60 6.01 Younger at ODP Site 1171 134R-CC 135R-CC CN HCO Sphenolithus belemnos 17.95 (± 0.05) 1797.90 1810.40 1804.15 6.25 135R-CC 136R-CC PF ?HO Zeaglobigerina connecta 18.5 (± 0.3) 1810.40 1819.56 1814.98 4.58 137R-CC 138R-CC CN ?LO Sphenolithus belemnos 19.03 (± 0.1) 1829.75 1841.54 1835.65 5.89 139R-CC 140R-CC Oligocene/Miocene boundary; Marshall Paraconformity; cut to 30–32 Ma; ~12 m.y. missing 1848.49 1852.71 1850.60 2.11 140R-CC 140R-CC CN Chiasmolithus altus, Dictyococcites scrippsae; no Reticulofenestra umbilicus 27.5–32.0 (± 0.01) 1852.71 1852.71 1852.71 140R-CC 140R-CC PF Zeaglobigerina euapertura 23.0–34.4 (± 0.3) 1852.71 1852.71 1852.71 140R-CC 141R-CC PF ?HO Subbotina angiporoides 30.1 (±) 1852.71 1862.57 1857.64 4.93 143R-CC 144R-CC CN HO Reticulofenestra umbilicus 32.00 (± 0.05) 1878.85 1885.85 1882.35 3.50 145R-CC 146R-CC CN HO Isthmolithus recurvus 32.50 (± 0.05) 1893.50 1903.29 1898.40 4.89 146R-CC 147R-CC Eocene/Oligocene boundary; unconformity >2.3 m.y. missing 33.9 1903.29 1916.63 1909.96 6.67 147R-CC PF HO Globigerinapsis index 34.4–36.0 (± 0.3) 1916.63 1916.63 1916.63 147R-CC 147R-CC CN Cribrocentrum reticulatum, Chiasmolithus oamaruensis 35.2–37.0 (± 0.01) 1916.63 1916.63 1916.63 148R-CC PF Globigerinapsis index 34.4–36.0 (± 0.3) 1924.26 1924.26 1924.26 Bottom-hole sample 148R-CC CN Cribrocentrum reticulatum, Chiasmolithus oamaruensis 35.2–37.0 (± 0.01) 1924.26 1924.26 1924.26 Bottom-hole sample 317-U1352D- 317-U1352D- 1H-CC 14H-CC CN Emiliania huxleyi Zone (NN21a) <0.29 (± 0.01) 3.55 127.61 65.58 62.03 12H-CC 12H-CC DT HO Hemidiscus karstenii 0.30 (± 0.03) 108.06 108.06 108.06