B4.18

B4.23

B7

B10

B12

Mz (φ)

2.61

1.36

4.31

0.67

3.99

Character of grain-size distribution

Bimodal

Bimodal

Unimodal

Bimodal

Bimodal

Mode (interval) (φ)

0.5 - 1

1 - 1.5

4.5 - 5

0 - 0.5

4.5 - 5

2^nd mode (interval) (φ)

5.5 - 6

6 - 6.5

3.5 - 4

1.5 - 2

% Sand

72.27

86.81

45.04

91.53

48.38

% Silt

23.35

10.93

48.77

7.44

46.34

% Clay

4.38

2.26

6.19

1.02

5.28

% Fines (silt + clay)

27.73

13.19

54.96

8.46

51.62

% Sand by size:

Coarse sand

30.44

35.46

1.35

68.75

6.98

Medium sand

28.46

44.18

9.5

18.31

13.17

Fine sand

5.43

4.97

14.35

1.57

11.85

Very fine sand

4.51

1.33

19.83

2.9

16.38

% Silt by size:

Coarse silt

5.89

2.81

21.03

2.55

18.87

Fine silt

17.46

8.12

27.74

4.89

27.47