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Table T21. Constrained tie points for depth-age relationship, Site U1430.

Selected ties for
depth-age lines
Event
type

Bioevents and epoch boundaries
Depth
CCSF-A (m)
Depth range
(±)
Age
(Ma)
Age range
(±)
Sedimentation
rate (m/m.y.)
Top               0.00   0.000    
R LO Lychnocanoma sakaii 1.98 1.77 0.050 0.000 44.4
CN FO Emiliania huxleyi 8.69 4.95 0.290 0.000  
R LO Amphimelissa setosa 8.69 4.95 0.080 0.000  
R LO Spongodiscus sp. 18.76 5.13 0.290 0.000  
D LO Proboscia curvirostris 20.78 3.11 0.300 0.000  
PF LO Neogloboquadrina kagaensis group 31.34 6.53 0.700 0.000  
Paleomag   PM Bottom of C1n (Brunhes/Matuyama) 34.71 3.06 0.781 0.000  
PF Neogloboquadrina pachyderma (coiling change, D to S) 42.91 4.99 1.190 0.050 11.4
Unit IA/IB           46.77   1.839    
R LO Axoprunum acquilonium 48.87 4.87 1.450 0.250 11.4
D LO Neodenticula koizumii 54.38 0.64 2.000 0.000  
R FO Cycladophora davisiana 58.83 5.09 2.700 0.000  
R LO Hexacontium parviakitaensis 58.83 5.09 2.700 0.000  
Unit IB/IIA       60.02   3.003    
D LO Neodenticula kamtschatica 63.00 0.93 2.650 0.050 11.4
D FO Neodenticula koizumii 67.04 0.75 3.665 0.265  
Unit IIA/IIB       76.54   4.453    
R FO Hexacontium parviakitaensis 78.64 4.81 4.100 0.200 11.4
R LO Lipmanella redondoensis 78.64 4.81 5.060 0.000  
Biostrat       83.45   5.060    
R FO Axoprunum acquilonium 78.64 4.81 7.100 0.000 0.0
R LO Cycladophora nakasekoi 78.64 4.81 7.400 0.000  
Biostrat         83.45   7.400    
R FO Larcopyle pylomaticus 88.68 5.23 5.300 0.000 0.0
D FO Thalassiosira oestrupii 88.68 5.23 5.560 0.000  
D LCO Thalassionema schraderi 98.91 5.00 7.670 0.000  
Unit IIB/IIIA                   103.17   7.891    
D FCO Thalassionema schraderi 129.42 4.95 8.500 0.000 40.2
D LO Denticulopsis katayamae 139.32 4.95 8.700 0.000  
R LCO Lychnocanoma magnacornuta 149.44 5.17 9.100 0.000  
R FO Cycladophora nakasekoi 190.18 4.58 10.100 0.000  
R LO Cyrtocapsella japonica 190.18 4.58 10.100 0.000  
D LO Denticulopsis hustedtii 190.18 4.58 10.200 0.000  
R LO Dendrospyris uruyaensis 210.14 5.27 10.100 0.000  
R FO Lychnocanoma magnacornuta 247.30 2.94 11.800 0.000  
Unit IIIA/IIIB         256.79   11.714    
R FO Dendrospyris uruyaensis 257.21 3.04 11.800 0.000 40.2
R LO Eucyrtidium inflatum 257.21 3.04 11.800 0.000  
R LO Lithopera renzae 257.62 2.63 11.800 0.000  
Biostrat       260.25   11.800    
D FCO Denticulopsis simonsenii 257.62 2.63 13.100 0.000 3.3
R RD Cyrtocapsella tetrapera 262.45 2.36 12.600 0.000  
Unit IIIB/IV       264.63   13.121    
R LO Dendrospyris sakaii 267.50 2.69 14.800 0.000 3.3
R LO Pentactinosphaera hokurikuensis 270.04 2.59 15.000 0.000  
Biostrat 270.20   14.800    

R = radiolarian, D = diatom, PF = planktonic foraminifer, CN = calcareous nannofossil, PM = paleomagnetism. LO = last occurrence, LCO = last common occurrence, FO = first occurrence, FCO = first common occurrence, RD = rapid decrease. D to S = dextral to sinistral coiling change.

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