type

Sedimentary genetic type

Thickness

(m)

Width

(m)

Length-width ratio

Class I

Flood mudstone

1 - 4, average 2.1

300 - 800

1.8 - 3.2:1

Class II

Abandoned river course and mud between dams

0.5 - 2.1, average 1.1

<300

2.5 - 4.2:1

Class III

Muddy channel/silt layer

0.1 - 0.6, average 0.3

<100

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