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Again, this doesn't tell them exactly how old the layers are, but it does give them an idea of the ordered sequence of events that occurred over the history of that geologic formation.Sort of an offshoot of stratigraphic succession is fossil succession, or a method in which scientists compare fossils in different rock strata to determine the relative ages of each.In 1905, Ernest Rutherford figured out that we could use radiation to establish the ages of rocks.By studying how the mass of uranium changed with radioactive decay, Rutherford was able to determine the age of a rock containing a uranium mineral. It meant that scientists could suddenly establish the actual ages of all their rocks and fossils!In 1896, a French physicist named Henri Becquerel discovered radioactivity in an element called uranium.
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So, what if Paul found that superus awesomus dinosaur fossil in this middle layer?Scientists piece together a story of how one event came before or after another.
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