Table 2

87Sr/86Sr ratios, 87Rb/86Sr ratios, K, Rb, Sr concentrations (in 10-6 moles/l)
of suspended solids for samples from the Oubangui river.

Sample

W m3/s

S. M mg/l

87Sr/86Sr

2 S

Sr ppm

Rb ppm

87Rb/86Sr

10/88

10000

33.5

0.738393

8E-05

42

66

4.436

11/88

6550

33.7

0.733930

7E-05

51

58

3.210

12/88

3700

23.7

0.741235

0.0003

37

63

4.806

01/89

2000

13.0

0.731945

4E-05

66

63

2.694

02/89

850

3.4

0.728920

0.003

44

54

3.464

03/89

500

2.4

0.723033

6E-05

45

56

3.513

06/89

1520

22.0

0.737880

0.0004

104

500

3.570

07/89

2020

36.0

0.740090

7E-05

150

255

4.798

08/89

3470

45.0

0.739096

4E-05

167

225

3.803

09/89

4000

50.0

0.743300

8E-05

110

184

4.721