Which statements describe geologic gaps? Check all that apply.
A. Geologic gaps happen when volcanoes erupt.
B. When no sediment is deposited for a long time, angularities can result.
C. An unconformity happens when rocks do not follow normal geologic rules.
D. A geologic gap happens when rock is eroded before sediment is deposited.
E. An unconformity occurs when a rock layer’s relative age can be determined.
