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Table T4. Radiolarian datums, Site U1336. (See table notes.)

Geologic
age 		Zone Marker species Age
(Ma)		 Core, section, interval (cm) Depth CSF (m)
Top Bottom Top Bottom Midpoint ±
middle
Miocene 		RN6     320-U1336A- 320-U1336A-
  B D. petterssoni 12.11 1H-4, 104–106 1H-CC 5.54 8.19 6.87 1.33
RN5 B C. japonica 12.41 1H-4, 104–106 1H-CC 5.54 8.19 6.87 1.33
B L. neotera 12.95 1H-CC 2H-2, 105–107 8.19 10.55 9.37 1.18
T C. robusta 13.348 2H-CC 3H-2, 105–107 17.68 20.05 18.87 1.19
T S. armata 13.5 2H-CC 3H-2, 105–107 17.68 20.05 18.87 1.19
T A. octopylus 13.88 3H-2, 105–107 3H-4, 105–107 20.05 23.05 21.55 1.50
T C. costata 14.229 3H-4, 105–107 3H-CC 23.05 27.47 25.26 2.21
T D. dentata 14.666 4H-2, 105–107 4H-4, 105–107 27.47 32.55 30.01 2.54
T L. stauropora 14.826 4H-2, 105–107 4H-4, 105–107 27.47 32.55 30.01 2.54
  D. dentata > D. alata 14.78 4H-2, 105–107 4H-4, 105–107 27.47 32.55 30.01 2.54
RN4 B D. alata 15.08 4H-CC 5H-2, 105–107 36.20 39.05 37.63 1.43
B L. parkerae 15.03 4H-CC 5H-2, 105–107 36.20 39.05 37.63 1.43
T C. cingulata 15.13 5H-4, 105–107 5H-CC 42.05 46.41 44.23 2.18
T L. elongata 15.15 6H-2, 105–107 6H-4, 105–107 48.55 48.57 48.56 0.01
B L. renzae 16.77 6H-2, 105–107 6H-4, 105–107 48.55 48.57 48.56 0.01
early
Miocene 		  B C. costata 17.49 6H-4, 105–107 6H-CC 48.57 55.14 51.86 3.29
RN3 B D. dentata 17.72 6H-CC 7H-2, 104–106 55.14 58.04 56.59 1.45
B L. stauropora 17.72 6H-CC 7H-2, 104–106 55.14 58.04 56.59 1.45
T D. scambos 18.53 7H-4, 104–106 7H-CC 61.05 65.60 63.33 2.28
  B S. wolffii 18.57 8H-2, 105–107 8H-4, 105–107 67.55 70.55 69.05 1.50
RN2 B D. forcipata 18.61 8H-2, 105–107 8H-4, 105–107 67.55 70.55 69.05 1.50
T D. simplex 18.69 8H-CC 9H-2, 105–107 74.38 77.05 75.72 1.34
T D. praeforcipata 19.77 9CC 10H-2, 105–107 84.60 86.56 85.58 0.98
B D. simplex 20.34 10H-4, 105–107 10H-CC 89.55 93.78 91.67 2.12
B S. delmontensis 20.68 11H-2, 105–107 11H-4, 105–107 96.05 99.05 97.55 1.50
T L. pegetrum 20.89 11H-4, 105–107 11H-CC 99.05 103.48 101.27 2.22
  T T. annosa 21.38 12H-2, 105–107 12H-4, 105–107 105.55 108.55 107.05 1.50
RN1 B C. virginis 21.39 11H-CC 12H-2, 105–107 103.48 105.55 104.52 1.04
T E. mitodes 21.95 13H-4, 104–106 13H-CC 118.04 122.58 120.31 2.27
B C. serrata 22.04 15H-2, 105–104 15H-4, 105–107 126.05 129.05 127.55 1.50
B C. cornuta 22.26 15H-4, 105–107 15H-CC 129.05 133.38 131.22 2.16
  B C. tetrapera 22.35 15H-4, 105–107 15H-CC 129.05 133.38 131.22 2.16
RP22 T A. gracilis 22.62 16H-2, 105–107 16H-4, 105–107 133.55 138.55 136.05 2.50
B E. diaphanes 22.95 16H-CC 17H-2, 105–107 141.99 144.55 143.27 1.28
T D. cyclacantha 22.98 16H-CC 17H-2, 105–107 141.99 144.55 143.27 1.28
late
Oligocene 		B D. cyclacantha 23.29 17H-2, 105–107 17H-4, 105–107 144.55 147.55 146.05 1.50
T D. papilio 23.31 17H-4, 105–107 17H-CC 147.55 151.84 149.70 2.15
T L. longicornuta 24.12 18H-2, 105–107 18H-4, 105–107 154.04 157.05 155.55 1.51
T L. apodora 24.50 — —     0.00 0.00
  B L. elongata 25.05 — —     0.00 0.00

Notes: B = bottom, T = top. — = not encountered.

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