Substrate Origin | Geologic Substrate |
Substrate Class | Unconsolidated Mineral Substrate |
Substrate Subclass | Fine Unconsolidated Substrate |
Substrate Group | Sandy Mud |
Substrate Subgroup | Sandy Silt |
Definition | Geologic Substrate surface layer shows no trace of Gravel and contains 10% to < 50% Sand; the remaining Silt-Clay mix is 67% or more Silt. |