Elemental

ratio

Neogene mudrocks

(n = 20)

Ranges in sediments from

felsic sources(a)

Ranges in sediments from

mafic sources (a)

Upper continental crust (b)

La/Sc

1.92 - 3.43

2.50 - 16.3

0.43 - 0.86

2.21

Th/Sc

0.82 - 1.46

0.84 - 20.5

0.05 - 0.22

0.79

Th/Co

0.83 - 1.45

0.67 - 19.4

0.04 - 1.40

0.63

La/Co

2.07 - 3.68

1.80 - 13.8

0.14 - 0.38

1.76