Question

step 12 in figure above is the_________.
fault
fold
brown layer
nonconformity
angular unconformity
red layer
pink layer
disconformity

Explanation:

A nonconformity is a type of unconformity where sedimentary rocks lie on top of igneous or metamorphic rocks. In the given geological diagram, the contact between the overlying sedimentary layers and the underlying igneous (or metamorphic - as indicated by the different texture and structure) rock body (the greenish - patterned area) represents a nonconformity.

Answer:

Nonconformity