Table 4 Assigned permeability values and ranges for the different permeability seaward view (shallow marine sediments) classes and folk classification with an explanation.
Permeability Class | Permeability value (m²) | Log *100 Permeability | Permeability Range (m²) | Log Permeability * 100 Range | Comment |
|---|---|---|---|---|---|
Gravel (G) | 5*10−8 | −730 | 10−10 – 10−7 | −700 – (−1000) | Value: Average of range for gravel permeability73. |
muddy Gravel (mG) | 5*10−14 | −1330 | 10−16 – 10−13 | −1300 – (−1600) | Value: Average of range for muddy gravel74. |
muddy sandy Gravel (msG) | 3.9*10−11 | −1041 | 5*10−14 – 5*10−8 | −730 – (−1330) | Value: Geometric mean of G, sG, mG & gmS permeability values. Range: Range of the direct neighbor field values. |
sandy Gravel (sG) | 3.4*10−10 | −947 | 3.9*10−11 – 5 * 10−8 | −730 – (−1041) | Based on grain size analysis75 – assumed composition: d60 = Gravel (2 mm), d10 = Sand (0,63 mm) = U: 3.17. Range: Range of direct neighboring fields. |
gravelly Mud (gM) | 5*10−17 | −1630 | 10−19 – 2.7 *10−12 | −1157 – (−1900) | Value: Average of permeability range of unweathered marine clay73. Range of the direct neighbor fields. Range: Range of direct neighbor fields. |
gravelly sandy Mud (gmS) | 2.7*10−12 | −1157 | 10−17 – 1.8*10−10 | −976 – (−1630) | Grain size analysis75 – assumed composition: d60 = Sand (0.6 mm), d10 = Mud (0,06 mm) = U: 10. Range: Range of the direct neighboring fields. |
gravelly Sand (gS) | 1.8*10−10 | −976 | 2.7 * 10−12 – 3.4 * 10−10 | −947 – (−1157) | Value: Geometric mean of sG, S & gmS. Range: Range of direct neighbor fields. |
Mud (M) | 10−19 | −1900 | 10−19 – 10−16 | −1600 – (−1900) | |
Sandy Mud (sM) | 5*10−17 | −1630 | 10−19 – 10−14 | −1400 – (−1900) | Value: Average of permeability range of unweathered marine clay73. Range of the direct neighboring fields. |
muddy Sand (mS) | 1.7*10−14 | −1376 | 5.5 * 10−16 – 5.5 *10−13 | −1226 – (−1526) | Average of the range stated by74,77 value stated by76->20% Clay, Fig. 4. |
Sand (S) | 10−11 | −1100 | 10−13 – 10−9 | −900 – (−1300) | Average of range for clean sand permeability73. |
Marine seagrass sediments (MS) | 1.7*10−14 | −1376 | 5.5 * 10−16 – 10−11 | −1100 – (−1526) | Most seagrass species grow on sandy to muddy sediments78. Seagrass can’t grow if the substrate is too muddy79. MS permeability is chosen to be like Folks class muddy Sand (mS) – Range from clean sand to lower end of muddy Sand. |
Marine coral sediments (MC) | 1.2*10−10 | −992 | 2.9 * 10−11 – 4.6 * 10−10 | −933 – (−1053) | Value: Average of range for coral sand72. |
Marine muddy sediments (MM) | 5*10−17 | −1630 | 10−19 – 10−14 | −1400 – (−1900) | Value: Average of Range. Range: Range for marine clay73. |
