Final answer:
An eroded granite overlain by sedimentary rocks represents a nonconformity, indicating a period of erosion between the formation of the igneous rock and the sedimentary layers.
Step-by-step explanation:
An eroded granite covered by flat-lying sedimentary rocks is an example of a nonconformity. This type of unconformity forms when igneous or metamorphic bedrock is eroded, and then horizontal layers of sedimentary rock are deposited directly on top of it. The unconformity is where the bedrock meets the sedimentary rocks. When granite, which is an igneous rock, has been eroded and is subsequently covered by sedimentary rocks, it represents a contact between two types of rocks that are significantly different not only in composition but also in their formational history. This contact is considered a nonconformity because it indicates that there was a significant period during which deposition ceased, and erosion took place before sedimentary layers were again deposited.