Sentence Examples with the word geological horizon

It is noteworthy that a similar bone bed has been traced on the same geological horizon in Brunswick, Hanover and Franconia.

The name of Archaeopteryx litho graphica was based by Hermann von Meyer upon a feather (Gr.irrEpv, wing) found in 1861 in the lithographic slate quarries of Solenhofen in Bavaria, the geological horizon being that of the Kimmeridge clay of the Upper Oolite or Jurassic system.