Keuper

词形变化

the Keuper

释义与例句

name
  1. 1.

    A lithostratigraphic unit (a sequence of rock strata) in the subsurface of large parts of west and central Europe, consisting of dolomite, shales or claystones and evaporites that were deposited during the Middle and Late Triassic epochs (about 220 million years ago).