Mesozoic Sedimentary Cover Sequences of the Congo Basin in the Kasai Region, Democratic Republic of Congo - Geology and Resource Potential of the Congo Basin - page 179

Fig. 9.15 Age-probability
spectrum and histogram ( above )
and U-Pb Concordia plots ( below )
for detrital zircon sample 179-
X009-3B

179-X009-3B (65 m below top of core)

14

79 Ma

12

10

113 Ma a

8

6

258 Ma

4

2

N = 58

0

0 500 1000 1500 2000 2500 3000 3500 4000

Preferred Age

data-point error ellipses are 2 σ

3000

0.6

2600

2200

0.4

1800

1400

0.2

1000

0.0

0 4 8 12 16 20

207 Pb/ 235 U

data-point error ellipses are 2

300

0.045

260

220

0.035

180

0.025

140

100

0.015

60

0.005

0.0 0.1 0.2 0.3 0.4

207 Pb/ 235 U