Figure 1 shows a crosssection a vertical cut through the Ear

Figure 1 shows a cross-section (a vertical cut through the Earth) of several layers that have undergone several geological events, including, faulting, intrusion by dikes, erosion, deposition of sedimentary layers, etc. (not neccessarily in this order). Names such as Ordovician, Siliurian, Devonian, etc. refer to time periods in the Geologic Time Scale (see book). Cretaceous shale & sandstone Cretaceous conglomerate c. Precambrian granite Precambrian granite

Solution

Nonconformities are unconformities that separate igneous or metamorphic rocks from overlying sedimentary rocks. They usually indicate that a long period of erosion occurred prior to deposition of the sediments.

So the contact here separates the igneous rock from sedimentary rock and is a non conformity.