Table 2.

Depths, ages and error ranges of all stratigraphically useful microfossil bioevents from Hole 647A

Fossil datum numberTop sampleBottom sampleAge referencesFossil groupDatum typeTaxonDatum depth Top (mbsf)Datum depth Base (mbsf)Datum depth Mean (mbsf)Depth error (±) (m)Minimum age (Ma)Maximum age (Ma)Mean age (Ma)Age error (±) (Myr)
6317R-1, 107–11217R-1, 116–1181CNLOSphenolithus ciperoensis155.87155.96155.920.0527.128.727.90.8
6220R-3, 52–5420R-5, 50–521DLOSynedra jouseana187.02190.00188.511.4930.633.632.11.5
6121R-1, 92–9421R-3, 77–792PFHOTurborotalia ampliapertura194.02196.87195.451.4330.430.430.40.0
6022R-1, 11–1323R1–118–1201CNHOIsthmolithus recurvus202.81213.48208.155.3332.833.933.40.5
5923R-4, 91–9323R-5, 94–961CNHOReticulofenestra umbilicus (>14 µm)213.48214.90214.190.7131.133.032.01.0
5823R-5, 102–10423R-CC1DHOSceptroneis pupa219.32221.82220.571.2531.133.332.21.1
5724R-2, 83–8524R-3, 86–881DLOSceptroneis pupa224.23225.76225.000.7731.133.332.21.1
5621R-1, 92–9421R-3, 77–793PFHOChiloguembelina ototara227.07241.40234.247.1729.629.629.60.0
5525R-3, 112–11425R-3, 112–1144DCHOSpiniferites manumii235.62235.62235.620.0031.132.231.60.6
5425R-5, 61–6327R-1, 51–531CNHOEricsonia formosa238.11250.91244.516.4032.933.133.00.1
5325R-5, 61–6327R-1, 51–531CNLOSphenolithus distentus238.11250.91244.516.4033.533.533.50.0
5226R-1, 30–3227R-1, 47–492PFHOPseudohastigerina naguewichiensis241.40250.87246.144.7432.232.232.20.0
5126R-CC27R-CC1DLORhizosolenia gravida/oligocaenica242.33259.62250.988.6533.834.033.90.1
5028R-CC29R-1, 9–112PFHOPseudohastigerina micra269.70269.79269.750.0533.933.933.90.0
4930R-2, 62–6530R-3, 100–1044DCLOChiropteridium galea281.52283.40282.460.9433.433.833.60.2
4830R-6, 30–3330R-7, 30–324DCLOSpiniferites manumii287.20288.70287.950.7533.433.833.60.2
4731R-1, 4–631R-2, 4–61CNHODiscoaster saipanensis289.04290.54289.790.7534.134.434.30.1
4631R-1, 56–5831R-CC2PFHOTurborotalia cerroazulensis289.56298.60294.084.5234.034.034.00.0
4532R-2, 19–2133R-1, 10–124DCHOAreosphaeridium diktyoplokum300.29308.40304.354.0533.233.633.40.2
4432R-2, 11–1333R-1, 138–1401CNHOReticulofenestra reticulata300.21309.68304.954.7435.036.135.50.5
4333R-1, 10–1233R-1, 91–944DCHOAreosphaeridium michoudii308.40309.21308.810.4135.435.535.40.0
4233R-1, 10–1233R-1, 91–944DCHOHeteraulacacysta porosa308.40309.21308.810.4136.236.336.20.1
4133R-1, 138–14035R-1, 36–381CNHODiscoaster barbadiensis309.68327.96318.829.1434.434.634.50.1
4035R-2, 39.5–41.035R-2, 74.5–76.02PFHOGlobigerinatheka index328.57329.85329.210.6434.534.534.50.0
3936R-1, 10–1337R-2, 88–904DCHOCribroperidinium sp. 2 (Damassa et al. 1990)337.20349.08343.145.9435.535.935.70.2
3839R-2, 77–8039R-3, 108–1124DCHOPhthanoperidinium distinctum368.37370.20369.290.9137.339.238.30.9
3743R-2, 120–12444R-4, 95–974DCHODiphyes colligerum407.50419.95413.736.2239.140.639.80.7
3647R-6, 42–4447R-7, 23–281CNLOReticulofenestra bisecta (>10 µm)451.42452.73452.080.6639.440.439.90.5
3547R-5, 49–5148R-3, 60–622PFLOGlobigerinatheka index449.99456.80453.403.4141.941.941.90.0
3447R-7, 23–2848R-1, 91–931CNHOChiasmolithus solitus452.73454.11453.420.6938.039.738.80.9
3349R-1, 55–5749R-6, 40–422PFHOAcarinina mcgowrani463.35470.70467.033.6737.737.737.70.0
3249R-1, 55–5749R-6, 40–422PFHOAcarinina bullbrooki463.35470.70467.033.6739.839.839.80.0
3150R-2, 76–7850R-6, 59–615PFHOAcarinina collactea474.76480.59477.682.9137.437.437.40.0
3050R-2, 76–7850R-6, 59–612PFHOTurborotalia frontosa474.76480.59477.682.9138.838.838.80.0
2951R-1, 87–8951R-5, 71–734DCLOSvalbardella cooksoniae482.97488.81485.892.9240.641.340.90.4
2851R-1, 87–8951R-5, 71–734DCHOWetzeliella ovalis482.97488.81485.892.9239.342.941.11.8
2751R-1, 87–8951R-5, 71–734DCLOCribroperidinium sp. 2 (Damassa et al. 1990)482.97488.81485.892.9241.442.341.90.4
2652R-4, 25–2853R-4, 121–1254DCLORhombodinium rhomboideum496.55507.11501.835.2839.339.439.40.1
2552R-4, 25–2853R-4, 121–1254DCLOWetzeliella ovalis496.55507.11501.835.2840.546.143.32.8
2454R-6, 15–1756R-1, 11–161CNLOReticulofenestra reticulata518.75530.41524.585.8338.041.139.61.5
2356R-1, 11–1657R-CC, 0–21CNHONannotetrina spp. (cristata)530.41549.50539.969.5540.940.940.90.0
2259R-1, 35–3761R-1, 29–332PFLOTurborotalia pomeroli559.75579.09569.429.6741.541.541.50.0
2160R-4, 70–7761R-1, 12–144DCLOPhthanoperidinium distinctum574.30578.92576.612.3140.543.241.81.4
2061R-1, 12–1462R-1, 0–24DCLOPhthanoperidinium comatum578.92598.10588.519.5941.441.441.40.0
1962R-1, 0–262R-2, 92–944DCLOEnneadocysta arcuata598.10600.52599.311.2140.642.441.50.9
1862R-2, 92–9462R-5, 88–914DCHODiphyes ficusoides600.52604.98602.752.2344.546.245.30.9
1762R-5, 87–8963R-1, 36–381CNOCC/HO (>)Chiasmolithus gigas604.97608.16606.571.5941.541.541.50.0
1663R-1, 44–4663R-1, 105–1084DCLOHeteraulacacysta porosa608.24608.85608.550.3140.444.342.42.0
1563R-1, 44–4663R-1, 105–1084DCHOCerebrocysta magna608.24608.85608.550.3144.646.245.40.8
1463R-1, 139–14263R-2, 36–381CNLOReticulofenestra umbilicus (>14 µm)609.20609.66609.430.2341.142.942.00.9
1363R-1, 36–3863R-2, 36–381CNOCC/LO (<)Chiasmolithus gigas608.16609.66608.910.7544.044.044.00.0
1264R-1, 30–3264R-2, 78–804DCHOEatonicysta ursulae617.80619.78618.790.9948.048.648.30.3
1164R-2, 78–8064R-3, 28–304DCHODracodinium pachydermum619.78620.78620.280.5046.046.546.30.3
1064R-3, 88–9165R-1, 27–294DCHOCharlesdowniea columna621.38627.47624.433.0548.348.848.60.2
965R-1, 117–12166R-1, 15–184DCLOCerebrocysta magna628.37636.95632.664.2948.048.648.30.3
865R-1, 117–12166R-1, 15–184DCLODiphyes ficusoides628.37636.95632.664.2949.250.049.60.4
765R-1, 117–12166R-1, 15–184DCLODracodinium pachydermum628.37636.95632.664.2949.249.449.30.1
665R-3, 133–13866R-1, 52–541CNHODiscoaster lodoensis631.53637.32634.432.9048.048.048.00.0
567R-3, 50–5268R-1, 47–491CNHOTribrachiatus orthostylus650.00656.67653.343.3351.051.051.00.0
468R-4, 110–11268R-4, 110–1126PFLOAcarinina primitiva661.80661.80661.800.0051.651.651.60.0
368R-4, 110–11268R-4, 110–1126PFLOAcarinina collactea661.80661.80661.800.0048.948.948.90.0
269R-CC, 14–1670R-1, 47–491CNLODiscoaster lodoensis666.24685.67675.969.7152.353.552.90.6
171R-2, 41–4171R-2, 41–411CNLO (<)Tribrachiatus orthostylus (base of sediment)696.71696.71696.710.0053.954.254.00.2
  • Fossil group: CN, Calcareous nannofossil; D, Diatom; DC, Dinoflagellate cyst; PF, Planktonic foraminifer.

  • Datum type: HO, highest occurrence; LO, lowest occurrence; OCC, Occurrence; >, minimum depth; <, maximum depth.

  • Top and bottom sample IDs: Core/type-section, interval (cm).

  • Age references: 1, Firth, this paper; 2, Wade et al. (2011); 3, Cooper (2004); 4, Eldrett et al. (2004); 5, Roberts et al. (2003); 6, Huber & Quillévéré (2005).