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Sandy Gravel (Substrate Subgroup)

Component: Substrate

Unique Identifier: 270

Substrate Origin Geologic Substrate
Substrate Class Unconsolidated Mineral Substrate
Substrate Subclass Coarse Unconsolidated Substrate
Substrate Group Gravel Mixes
Substrate Subgroup Sandy Gravel

Definition Geologic Substrate is 30% to < 80% Gravel, with Sand composing 90% or more of the remaining Sand-Mud mix.