Coastal and Marine Ecological Classification Standard
CMECS
Substrate
Geologic Substrate
Unconsolidated Mineral Substrate
Fine Unconsolidated Substrate
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Sandy Mud
Substrate Group: Geologic Substrate surface layer contains no trace of Gravel and is composed of 10% to < 50% Sand; the remainder is composed of Mud (particles less than 0.0625 millimeters in diameter).
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