The classification of sediment gravity flows (Middleton and Hampton) associates each flow type with its primary grain-support mechanism: turbidity currents are supported by fluid turbulence, debris flows by matrix strength (cohesion), liquefied flows by escaping pore fluid, and grain flows by grain-to-grain dispersive pressure.
The correct pairing is: turbidity current - fluid turbulence (a-q); debris flow - matrix strength (b-p); liquefied flow - escaping pore fluid (c-s); grain flow...
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