Subsurface horizon (USDA)

{
  "id": "MLC-T-ENV-027180",
  "term": "Subsurface horizon (USDA)",
  "field": "Environment",
  "term_source": "Subsurface Horizon (USDA)",
  "definition": "The horizons described in this section form below the surface of the soil, although in some areas they form directly below a layer of leaf litter. They may be exposed at the surface by truncation of the soil. Some of these horizons are generally regarded as B horizons, some are considered B horizons by many but not all pedologists, and others are generally regarded as parts of the A horizon.",
  "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/subsurface-horizon-usda/"
}