Sed Soil Flashcards
A mixture of minerals, organic matter, water and air.
Soil
The layer of rock fragments produced by weathering.
Regolith
The study of physical and chemical properties soils and its formation.
Pedology
Zones of soil with varying composition, texture and structure found at different depths.
Horizon
A vertical section of all the soil horizons.
Soil profile
Washing out of fine soil components.
Eluviation
Depletion of soluble materials from upper horizons.
Leaching
Constitutes the O and A horizon.
Top soil
Consists largely of organic material.
O horizon
Mineral matter mixed with some humus
A horizon
A light-colored layer, known as the Zone of eluviation and leaching, that contains little organic material.
E horizon
Zone of accumulation where much of the material
B horizon
True Soil, that constitutes the O, A, E and B Horizon.
Solum
The layer of partially altered parent material.
C horizon
The unweathered parent material.
R horizon
