Science Quiz / Dunham Classification

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Can you name the Dunham Classification?

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Mud supported, less than 10% grains
Grain supported, contains mud
Grain supported, large grains
Mud supported, large grains
eg formed by stromatolites
Mud supported, more than 10% grains
Formed by encrusting organisms
Depositional texture not recognizable
Usually bound together by micro-organisms eg calcareous algae
Grain supported
Organisms have hindered deposition, reducing local depositional energy. Orgaisms usually found in life position eg corals

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