IAS (Admin.) Mains Geography Geomorphology-Factors Controlling Landform Development Study Material (Page 9 of 20)

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Weathering: Functions of Weathering, Factors Affecting Weathering

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Functions of Weathering

  • Decreases rock strength and increases permeability making it susceptible to mass wasting and erosion.
  • Strength (cohesion and friction) is reduced and permeability is increased causing decrease in resistance to fluid and gravitational stress.
  • It is precursor to erosion as erosion always follows weathering.
  • It generates minor landforms of soluble rock (mainly limestone) and micro-relief (for exa…

… (143 more words) …

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Weathering: Types of Weathering (Biological, Chemical and Physical)

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Types of Weathering

Biotic and Biochemical Weathering

It refers to decomposition and disintegration of rocks due to organic material of both flora and fauna. These are minor agent of weathering.

Examples of weathering agents

Illustration 1 for Biotic and Biochemical Weathering
  • Plants: Plants produce weathering because
    • Roots break rocks apart as fragments.
    • Lichens and mosses grow on bare rock surfaces with more humid chemical microenvironment to increase…

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