Which of the following statements is true, concerning sedimentary strata separated by a disconformity?
A)The younger strata were tilted after the older strata were.
B)All strata exhibit parallel bedding or stratification, but there is a hiatus (missing record).
C)The older strata were tilted when the younger strata were deposited.
D)All of the older strata were eroded away before the younger strata were tilted.

Question

Quizplus · Accepted Answer

A disconformity is a type of unconformity where there is a gap in the geological record between two sedimentary strata that are parallel to each other. This means that the younger strata were deposited on top of the older strata, but there is a missing section of time in between. There may not have been any deposition or there may have been erosion that removed the older strata. In the case of a disconformity, the strata exhibit parallel bedding or stratification, but there is a hiatus or missing record. The other options do not accurately describe a disconformity.

Which of the Following Statements Is True, Concerning Sedimentary Strata