Final answer:
The vast majority of rock exposed on Earth's land surface is sedimentary rock. Sedimentary rocks are formed from the accumulation and consolidation of sediments, such as sand, silt, and clay, that have been weathered and eroded from existing rocks.
Step-by-step explanation:
The vast majority of rock exposed on Earth's land surface is sedimentary rock. Sedimentary rocks are formed from the accumulation and consolidation of sediments, such as sand, silt, and clay, that have been weathered and eroded from existing rocks. Examples of sedimentary rocks include sandstone, shale, and limestone.