Question

After examining a sequence of horizontal sedimentary rocks, a geologist determines that there is a considerable span of time for which no sedimentary rock layers exist at this location. The geologist discovered _____.

a. a sequence of correlated strata
b. a disconformity
c. a nonconformity
d. an angular unconformity

Answer 1

I'm not 100 percent sure but I think the correct answer is B. Disconformity.

Answer 2

The geologist discovered is likely a disconformity. The correct letter of the answer is letter B. It is because as the geologist found that there are no sedimentary rock layers exist, it means that he discovers disconformity, where it means that the sedimentary sequence has brought to break.