Table T4. Mean preservation of Eocene-Oligocene radiolarian faunas from Southern Ocean sites.
Leg 120
Kerguelen Plateau
Leg 119
Kerguelen Plateau
Leg 71
Falkland Plateau
Leg 28
Ross Sea to Australia
Leg 183
Kerguelen Plateau
Time slice 748B* 749B* 738B 744A 511 512 274** 267** 264** 1138A
late Oligocene 2.6 2
3


2.2

early Oligocene 2.5 2 1.8 3 2.6
2.3

1.8
late Eocene 1.5 1.5 1.8 1 2.5


1.4 1
middle Eocene 1.6 1.5 1.6 1 1.0 2.9

1.4 1

Notes: Evaluations of preservation were taken from all samples of the reported data, transformed into numerical values, and averaged for the time intervals indicated. 1 = preservation poor or no radiolarians preserved, 2 = preservation moderate, 3 = preservation good. Sources: * = Takemura (1992), † = Caulet (1991), ‡ = Weaver (1983), ** = Chen (1975).