Table T1. Biostratigraphic datums used in age-depth plot for Site 1276 (see Fig. F7).
Age-depth
datum
Age
(Ma)
Occurrence
Nonoccurrence
Median
depth
Depth
(mbsf)
Core, section,
interval (cm)
Depth
(mbsf)
Core, section,
interval (cm)



210-1276A-
210-1276A-
Cenozoic nannofossil
FO Chiasmolithus altus 32.8 759.19 1W-CC 801.44 2R-1, 144-145 780.32
LO Markalius inversus/FO C. subdistictus 34.2 803.51 2R-CC 803.36 2R-3, 36-37 803.44
LO Chiasmolithus solitus 40.4 848.43 7R-1, 43–44 848.26 7R-1, 26–27 848.35
FO Reticulofenestra umbilica 43.7 863.80 8R-5, 20–21 863.84 8R-5, 24–25 863.82
LO C. gigas 44.5 864.91 8R-5, 131–132 864.86 8R-5, 126–127 864.89
FO C. gigas 46.1 864.91 8R-5, 131–132 864.96 8R-5, 136–137 864.94
LO Rhabdosphaera inflata 47.3 865.11 8R-6, 1–2 865.06 8R-5, 146–147 865.09
FO Rhabdosphaera inflata 48.5 866.13 8R-CC 867.49 9R-1, 29–31 866.81
FO Discoaster sublodoensis 49.7 873.72 9R-5, 52–53 874.48 9R-5, 128–129 874.10
FO Tribrachiatus orthostylus 53.6 906.05 13R-1, 35–36 906.21 13R-1, 51–52 906.13
FO Tribrachiatus contortus 54.7 906.66 13R-1, 109–110 906.79 13R-1, 109–110 906.73
FO Discoaster diastypus 55.0 918.87 14R-3, 57–58 919.08 14R-3, 78–79 918.98
LO Fasciculithus tympaniformis 55.3 928.77 14R-1, 104–105 915.94 14R-1, 64–65 922.36
FO Discoaster multiradiatus 56.2 928.77 15R-3, 77–78 929.76 15R-4, 26–27 929.27
FO Fasciculithus ulii 59.9 938.22 16R-3, 72–73 939.61 16R-4, 65–66 938.92
FO Cruciplacolithus primus 64.8 986.59 21R-3, 113–114 986.79 21R-3, 133–134 986.69
Mesozoic nannofossil
FO Micula prinsii 65.4 988.32 21R-CC 992.42 22R-1, 2–3 990.37
FO Nephrolithus frequens 65.8 992.48 22R-1, 8 994.39 22R-2, 50–51 993.44
FO Lithraphidites quadratus 67.5 992.48 22R-1, 8 994.39 22R-2, 50–51 993.44
FO Uniplanarius trifidus 76.0 1023.79 25R-2, 109–110 1024.40 25R-3, 20–21 1024.10
FO Ceratolithoides aculeus 78.5 1027.68 25R-5, 48–49 1031.21 26R-1, 41–42 1029.45
FO Lithastrinus septenarius 89.3 1061.36 29R-2, 22–23 1065.74 29R-5, 21–22 1063.55
FO Marthasterites furcatus 89.3 1061.36 29R-2, 22–23 1065.74 29R-5, 21–22 1063.55
FO Quadrum gartneri 93.2 1072.71 30R-3, 58–59 1075.31 30R-5, 18–19 1074.01
FO Lithraphdites acutus 96.8 1141.83 37R-5, 18–19 1143.38 37R-6, 32–33 1142.61
FO Corollithion kennedyi 97.6 1141.83 37R-5, 18–19 1143.38 37R-6, 32–33 1142.61
FO Eiffellithus turriseiffellii 101.7 1220.06 45R-3, 130–131 1217.52 45R-4, 13–14 1218.79
FO Eiffellithus monechiae 105.0 1300.47 53R-6, 46–47 1301.02 54R-1, 142–143 1300.75
FO Axopodorhabdus albianus 106.1 1442.48 69R-2, 118–119 1443.60 69R-3, 80–81 1443.04
FO Tranolithus orionatus 107.3 1521.65 77R-3, 51–52 1522.51 77R-4, 111–112 1522.08
FO Hayesites albiensis 112.5 1678.94 94R-5, 136–137 1679.82 94R-6, 73–74 1646.10
Cenozoic dinoflagellate cyst
LO Lentinia serrata 33.5 803.51 2R-CC 759.19 1R-CC 781.35
FO Areoligera semicirculata 33.7 759.19 1W-CC 803.51 2R-CC 781.35
LO Hemiplacophora semilunifera 33.6 819.26 3R-CC 803.51 2R-CC 811.39
FO Hemiplacophora semilunifera 36.4 819.26 3R-CC 825.90 4R-CC 822.58
FO Enneadocysta pectiniformis 36.5 825.90 4R-CC 838.15 5R-CC 832.03
LO Cerebrocysta bartonensis 38.0 838.15 5R-CC 825.90 4R-CC 832.03
FO Lentinia serrata 40.0 847.40 6R-CC 857.68 7R-CC 852.54
FO Rhombodinium draco 40.0 847.40 6R-CC 857.68 7R-CC 852.54
FO Cordosphaeridium cantharellum 40.8 847.40 6R-CC 857.68 7R-CC 852.54
FO Cerebrocysta bartonensis 41.0 857.68 7R-CC 942.23 16R-CC 899.96
FO Alisocysta margarita 61.7 953.66 17R-CC 963.40 18R-CC 958.53
LO Oligosphaeridium pulcherrimum 63.0 963.40 18R-CC 953.66 17R-CC 958.53
LO Spongodinium delitiense 63.7 982.82 20R-CC 963.40 18R-CC 973.11
FO Damassadinium californicum 64.8 982.82 20R-CC 1067.61 29R-CC 1025.22
Mesozoic dinoflagellate cyst
LO Litosphaeridium siphoniphorum 92.4 1076.64 30R-CC 1067.61 29R-CC 1072.13
FO Senoniasphaera rotundata alveolata 92.5 1067.61 29R-CC 1076.64 30R-CC 1072.13
FO Chatangiella verrucosa 93.5 1076.64 30R-CC 1086.88 31R-CC 1081.76
LO Ovoidinium verrucosum 95.8 1107.76 33R-CC 1098.33 32R-CC 1103.05
FO Xiphophoridium alatum 98.9 1164.03 39R-CC 1107.76 33R-CC 1135.90
FO Palaeohystrochophora infusorioides 99.9 1221.50 45R-CC 1324.66 56R-CC 1273.08

Note: FO = first occurrence, LO = last occurrence.