Introduction to sediments
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Introduction to Sediments. Aquatic Ecology.

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Introduction to sediments

Introduction to Sediments

Aquatic Ecology


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.




Classification of sediments
Classification of Sediments

  • Porosity

  • Particle Size

  • Shape/Composition


Porosity
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.



Shape composition
Shape/Composition

  • Sedimentary


Sampling
Sampling

  • Seives

  • Seive Shaker/Rototap


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