1. Coastal and Marine Ecological Classification Standard
  2. CMECS
  3. Substrate
  4. Geologic Substrate
  5. Unconsolidated Mineral Substrate
  6. Coarse Unconsolidated Substrate

Gravel

Substrate Group: Geologic Substrate surface layer contains > 80% Gravel (particles 2 millimeters to < 4,096 millimeters diameter).
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