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Table 2 Stratum division sheet

From: Forward modelling and identification of shallow gas in the Bohai Bay seabed

Strata

Representative stratum

Depth of bottom layer /m

Formation thickness/m

Acoustic wave velocity m/s

Density g/cm3

Layer-1

Soft clay

14.5

14.5

1573

1.81

Layer-2

Silty fine sand

25.7

11.2

1655

1.99

Layer-3

Hard clay

34.8

9.1

1603

1.87

Layer-4

Silt

49.8

15.0

1658

2.01

Layer-5

Dense silt

58.8

9.0

1616

1.91

Layer-6

Hard silty clay

120

61.2

1661

2.01