basement complex


noun Geology.

the undifferentiated assemblage of rock (basement rock) underlying the oldest stratified rocks in any region: usually crystalline, metamorphosed, and mostly, but not necessarily, Precambrian in age.

Nearby words

  1. baseless,
  2. baseline,
  3. baseliner,
  4. baseman,
  5. basement,
  6. basement membrane,
  7. baseness,
  8. basenji,
  9. baseplate,
  10. bases

Origin of basement complex

First recorded in 1895–1900

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019