According to Steno’s principle of superposition, where can the older layers of rocks be found at the bottom.
At initially, Steno hypothesized that if a rock had marine animal fossils, it had been produced by sediments deposited on the seafloor. Mountains were then formed by lifting these rocks. Rocks made of sediment are deposited on top of one another.
According to the law of superposition, the oldest rock is always at the bottom and the youngest rock is always on top. The depth of the rocks allowed for the arrangement of the respective ages. The supposed ages of the fossil records in the sedimentary layers, however, are more frequently used to determine the relative ages of rocks.
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The closest source of marble for Rome was in the Apuan Alps 350 km north of Rome. In fact it was the Romans who started exploiting marble there.
A theory predicts events in general terms, while a hypothesis makes a specific prediction about a specified set of circumstances.
