Coarse Unconsolidated Substrate (Substrate Subclass)

Component: Substrate

Unique Identifier: 263

Substrate Origin	Geologic Substrate
Substrate Class	Unconsolidated Mineral Substrate
Substrate Subclass	Coarse Unconsolidated Substrate
Substrate Group	Gravel Gravel Mixes Gravelly

Description

Definition

Geologic Substrate surface layer contains > 5% Gravel (particles 2 millimeters to < 4,096 millimeters). These sediments are classified using the upper three rows of the Folk (1954) Gravel-Sand-Mud diagram.