Use the finished chart and graph to reply the questions beneath. In a series of undisturbed layered rocks each successive layer above is younger than the layer below it. Therefore, the oldest rocks are at the bottom of the sequence and the youngest are on the prime. This useful resource is explicitly designed to construct in path of this disciplinary core thought.

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Suppose you discover a fossil at one place that can’t be dated using absolute methods. That fossil species could have been dated somewhere else, so you possibly can match them and say that your fossil has an identical age. Some of the most helpful fossils for courting functions are very small ones. For instance, microscopic dinoflagellates have been studied and dated in nice element around the world. Correlation with them has helped geologists, such as Professor James Crampton, date many New Zealand rocks, including these containing dinosaurs.