True or false

nonconformities occur when sedimentary rocks are deposited on top of uplifted and eroded metamorphic or igneous rocks.

Nonconformoties are usually found in sediments, but they may also occur in stratified volcanics. They are gaps that indicate episodes of crustal deformation, erosion, and sea level variations. So, the statement that nonconformities occur when sedimentary rocks are deposited on top of uplifted and eroded metamorphic or igneous rocks is true.