| 1-2-1 Fine to medium grained smooth sediment |
| 1-2-2 Mixed smooth sediment and rock |
| 1-2-3 Rock and boulders, rugose |
| 1-2-4 Medium to coarse grained, rippled |
| 1-3-1 Fine to medium grained smooth sediment |
| 1-3-2 Mixed smooth sediment and rock |
| 1-3-3 Rock and boulders, rugose |
| 1-3-4 Medium to coarse grained, rippled |
| 2-2-1 Fine to medium grained smooth sediment |
| 2-2-2 Mixed smooth sediment and rock |
| 2-2-3 Rock and boulders, rugose |
| 2-3-1 Fine to medium grained smooth sediment |
| 2-3-2 Mixed smooth sediment and rock |
| 2-3-3 Rock and boulders, rugose |