Law Of Superposition Relative Dating. Sediments are deposited in horizontal layers. The most accurate way to date rock is using the law of superposition.
The law of superposition, which states that older layers will be deeper in a site than more recent layers, was the summary outcome of 'relative dating' as observed in geology from the 17th century to the early 20th century. Sometimes, erosion means that so much of the sedimentary rocks have been worn away, that it is no longer clear which edge of each layer is the original top or bottom. The law of superposition, which states that in an undisturbed horizontal sequence of rocks, the oldest rock layers will be on the bottom, with successively younger rocks on top of these, helps geologists correlate rock layers around the world.
However, cross cutting relationships to order, law of a fantastic.
The law of the oldest law of intrusive relationships: How do scientists know how old these index fossils are? This also means that fossils found in the lowest levels in a sequence. The law of superposition states that each rock layer is older than the one above it.