Entisol - Causes of Delayed or Absent Development

Causes of Delayed or Absent Development

  • Unweatherable parent materials - sand, iron oxide, aluminium oxide, kaolinite clay.
  • Erosion - common on shoulder slopes; other kinds also important.
  • Deposition - continuous, repeated deposition of new parent materials by water, wind, colluvium, mudflows, other means.
  • Flooding or saturation.
  • Cold climate - must not be sufficiently cold in winter for permafrost.
  • Dry climate.
  • Shallow to bedrock - may be rock resistant to weathering, such as quartzite or ironstone.
  • Toxic parent materials - serpentine soil, mine spoils, sulfidic clays.

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