The rather simple idea that, unless disturbed, younger sedimentary layers overlie older layers, is referred to as the principle of
A) original horizontality.
B) uniformitarianism.
C) faunal succession.
D) superposition.
Question 2
Relative dating tells us the
A) time gaps that occur during deposition.
B) age of rock layers.
C) sequence of rock layerswhich formed first, second, and last.
D) actual date of formation for a rock layer.
