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Introduction to Sediments

Introduction to Sediments. Aquatic Ecology.

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Introduction to Sediments

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  1. Introduction to Sediments Aquatic Ecology

  2. Udden-Wentworth scale. Sediments can be classified by grain size according to the Udden-Wentworth scale. Larger grains tend to remain near their source, whereas smaller particles can be more easily transported over long distances, even by slow-moving currents of water or wind.

  3. Soils

  4. USDA

  5. Classification of Sediments • Porosity • Particle Size • Shape/Composition

  6. Porosity • Porosity and permeability are two of the primary factors that control the movement and storage of fluids in rocks and sediments. • Porosity is the ratio of the volume of openings (voids) to the total volume of material. • Porosity represents the storage capacity of the geologic material. • The primary porosity of a sediment or rock consists of the spaces between the grains that make up that material. • The more tightly packed the grains are, the lower the porosity.

  7. Particle Size

  8. Shape/Composition • Sedimentary

  9. Sampling • Seives • Seive Shaker/Rototap

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