Oxic horizon

{
  "id": "MLC-T-ENV-020030",
  "term": "Oxic horizon",
  "field": "Environment",
  "term_source": "Oxic Horizon",
  "definition": "The oxic horizon is a mineral subsurface horizon of sandy loam or a finer texture with a low cation-exchange capacity and a low content of weatherable minerals. It is at least 30 cm (12 in) thick. The clay-sized fraction generally is dominated by kaolinite with or without iron and aluminum oxyhydrates and with few or no other lattice silicate minerals, except for hydroxy interlayered vermiculites.",
  "subject": "Natural environments",
  "references": [
    "USDA Natural Resources Conservation Service Soil Taxonomy: A Basic System of Soil Classification for Making and Interpreting Soil Surveys (1999)"
  ],
  "url": "https://mlchart.com/terminology/environment/oxic-horizon/"
}