Table 2 La/Ba and Ce/Ba ranges for various geologic and hydrologic materials

Upper Continental Crust

0.056

0.12

[47]

Lower Continental Crust

0.071

0.15

[47]

Ocean Ridge Basalts

0.3–53

0.045–10

[48]

Peridotite

0.019–0.48

0.0033–2.0

[49]

Shale

0.023–0.071

0.11–0.15

[47, 50]

Marine carbonate

0.00037–0.077

0.00029–0.20

[51, 52]

Barite

0.000012–0.00055

0.000006–0.00053

[53]

Seawater (average)

0.00037

0.000046

[54]

River water (global average)

0.0052

0.011

[55]