overburden

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English[edit]

Etymology[edit]

From over- +‎ burden.

Verb[edit]

overburden (third-person singular simple present overburdens, present participle overburdening, simple past and past participle overburdened)

  1. To overload or overtax

Noun[edit]

overburden (plural overburdens)

  1. (geology) The rock and subsoil that lies above a mineral deposit such as a coal seam.
    • 2004, Richard Fortey, The Earth, Folio Society 2011, p. 163:
      Such rocks have been changed by baking in a terrestrial pressure-cooker. Then they have been disinterred: kilometres of overburden must have been removed.
  2. (archaeology) A sterile stratum that lies above the stratum being investigated

References[edit]

Wikipedia