What observable data would not help a scientist piece together the layers of rock according to the principle of lateral continuity?

Question

Quizplus · Accepted Answer

The principle of lateral continuity states that layers of sedimentary rock were originally deposited horizontally and extend laterally in all directions until they thin out or reach a barrier. An adjacent igneous mountain would not provide any information about the layers of sedimentary rock as igneous rocks are formed from magma and do not have layers like sedimentary rocks. Therefore, observing an adjacent igneous mountain would not be helpful in piecing together the layers of rock according to the principle of lateral continuity.

What Observable Data Would Not Help a Scientist Piece Together