Which is a true statement?
A) A disconformity in the Grand Canyon can be observed when igneous or metamorphic rocks exist below the unconformity and younger, flat, sedimentary rocks exist above the unconformable contact
B) An angular unconformity in the Grand Canyon can be observed when igneous or metamorphic rocks exist below the unconformity and younger, flat, sedimentary rocks exist above the unconformable contact
C) A nonconformity in the Grand Canyon can be observed when igneous or metamorphic rocks exist below the unconformity and younger, flat, sedimentary rocks exist above the unconformable contact
D) A geo-conformity in the Grand Canyon can be observed when igneous or metamorphic rocks exist below the unconformity and younger, flat, sedimentary rocks exist above the unconformable contact

Question

Quizplus · Accepted Answer

A nonconformity in the Grand Canyon can be observed when igneous or metamorphic rocks exist below the unconformity and younger, flat, sedimentary rocks exist above the unconformable contact. This is because a nonconformity is an unconformity where older igneous or metamorphic rocks are in contact with younger sedimentary rocks.

Which Is a True Statement