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Turbidity currents and turbidite rocks (sand to mud grains) Turbidity currents are a type of DENSITY current, meaning… ? Graded Beds … formed by traction on bed as density/turbidity current flows over seafloor, and then by settling of finest grains after current has passed. Which way is original “tops” of beds? Waits River Formation - Turbidites Waits River Turbidites … GRADED BEDS Rt. 64 - GRADED BEDS - “TOPS” TO THE EAST • GRAY = SAND • DARK GRAY = SILT • BROWN = CALCAREOUS CLAY “CROSS SECTION” BASED ON CONSTANT THICKNESS M16 M17 M18 M19 M20 M21 M22 M23 M24 M25 M26 M27