Grain size parameter/Age

Md(µm)

M_z

σ_I

Sk_I

Lower Cretaceous

120 - 350

1.4

0.3 - 0.9

−0.02 to +0.6

Umm Sahm F.

180 - 470

1.3

0.2 - 0.8

−0.6 to +0.4

Disi F.

260 - 630

1.6

0.2 - 0.6

−0.6 to +0.8

Umm Ishrin F.

260 - 550

1.7

0.2 - 1.1

−0.4 to +0.8

Abu Khusheiba F.

135 - 215

2.2

0.2 - 1.2

−0.6 to +0.8

Salib F.

High var.

1.0

0.3 - 1.8

−0.2 to +0.1