ENVS 2060 Study Guide - Final Guide: Eluvium, Soil Classification, Chernozem
22 May 2016
School
Department
Course
Professor
Document Summary
Mineral content, organic matter, pores (filled w/ air or water) Undisturbed ecosystems where organic material formed from fallen leaves and other plant material/ animal remains and undergo various decompositions. Layers near surface, dominated by mineral particles but are darkened by the accumulation of organic matter. Typically underneath a horizon & has a concentration of soluble salts, clays, iron and humus. Relatively unaffected by pedological processes and is generally the parent material. Can tell us about organic matter content, gleying and elluviation. Defined by the amount of mineral particles of various sizes (order of biggest to smallest = sand, silt clay) A mixture of sand, silt and clay that exhibits the properties of those separated in equal proportions. Particles not aggregated & typical of loose sands. Aggregates separated in loosely packed arrangements (typical of horizons with high organic matter & grass land soils) Found in surface and subsurface horizons, inherited by parent material or caused by compaction (found in clay soils)
