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SEDIMENTATION

SEDIMENTATION. Objective: To become familiar with the different types of marine sediments, the processes that make them, and understand how turbidity currents are created. Biogenous Sediments – Exercise 1. Flocculation. How does sediment behave differently in SW vs. FW? Demonstration.

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SEDIMENTATION

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  1. SEDIMENTATION Objective: To become familiar with the different types of marine sediments, the processes that make them, and understand how turbidity currents are created

  2. Biogenous Sediments – Exercise 1

  3. Flocculation How does sediment behave differently in SW vs. FW? Demonstration

  4. Exercise 2 – Turbidity Currents (~55mph)

  5. Exercise 2 – Turbidity tubes • Set up tube – • Set angle • Fill with water • Assign tasks (one timer, one recorder, one pourer, one ruler) • LEAVE BLACK CLAMP ON TUBE!!!

  6. Exercise 2 – Turbidity tubes • Run 6 trials • 2 at 40ppt Green (different angles) • 2 at 80ppt Red (different angles) • 2 Silica (Yellow is High density and Orange is Low density plus one small scoop of silica)

  7. Measured vs. Theoretical • U = 0.7 [(d1 - d2)(gh)/d2] -2 Densitiesd2 – Water =1 g/ml d1 – 40ppt = 1.026 g/ml - 80ppt =1.055 g/ml - High Silica = 1.19 g/ml - Low Silica = 1.095g/ml

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