Pebble (Substrate Subgroup)

Component: Substrate

Unique Identifier: 267

Substrate Origin	Geologic Substrate
Substrate Class	Unconsolidated Mineral Substrate
Substrate Subclass	Coarse Unconsolidated Substrate
Substrate Group	Gravel
Substrate Subgroup	Pebble

Description

Definition

Geologic Substrate contains > 80% Gravel, with a median Gravel size of 4 millimeters to < 64 millimeters.