Unit 3 - Soil Horizon Formation

Chapter 1 Soil Structure and Color

Chapter 2 Soil Horizon Nomenclature

Chapter 3 Lithologic Discontinuities and Other Stuff

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General Objective: Understand how soil characteristics of color and structure are used to identify soil horizons and how horizon nomenclature is used to name horizons.


The soil undergoes various changes over time. The soil undergoes pedogenesis and develops horizons. The intensity of the process varies with location because of the Five Soil Forming Factors. This unit will look at how the soil develops different horizons during formation and how the horizons are named.

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