Transcription: The principle of superposition can be used to determine the relative age of certain artifacts. Consider for example the bones, wood and tools in this picture. Of these artifacts, which are the oldest? Well, the principle of superposition assumes that the rock layers form sequentially as a result of the slow accumulation of sediment. If this is the case, then the bones that you see in this layer of rock must have existed before any of the other artifacts because they are found in one oflowest layers of rock. As the sediments continue to accumulate, more rock layers will form and some of those r ...
(.mp4)