Soil profile

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1. A vertical section of the soil through all its layers and extending into its growing medium; term is also used to refer to the corresponding layer of a baseball field skinned area.

profile.jpg

The four distinct layers of a soil's profile.
Source: http://soils.usda.gov/education/resources/k_12/lessons/profile/

soil_profile.gif

The horizons of a soil profile.
Source: http://www.uwsp.edu/geo/faculty/lemke/geomorphology/lecture_outlines/14_soil_properties_&_classification.html