The contact at the base of unit F in both columns:
A)is a disconformity
B)represents erosion or no deposition
C)represents some missing time
D)all of these

Question

The contact at the base of unit F in both columns: 
A)is a disconformity 
B)represents erosion or no deposition 
C)represents some missing time 
D)all of these

Quizplus · Accepted Answer

The contact at the base of unit F in both columns represents a change in lithology and is therefore a disconformity. Additionally, there is evidence of erosion or non-deposition indicated by the contact, and the fact that there is a change in lithology suggests some missing time. Therefore, all of the choices are correct.

The Contact at the Base of Unit F in Both