hardpan

Definitions

General Science

  • noun a hard soil surface, usually formed of dried clay

Agriculture

  • noun a hard cement-like layer in the soil or subsoil, which can be very harmful as it prevents good drainage and stops root development

Construction

  • Highly compacted soil, boulder clay, or other usually glacially deposited mixture, sometimes including sand, gravel, or boulders. The extreme density of hardpan makes its excavation difficult.
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