Use the completed chart and graph to reply the questions below. In a sequence of undisturbed layered rocks each successive layer above is youthful than the layer below it. Therefore, the oldest rocks are on the backside of the sequence and the youngest are on the prime. This useful resource is explicitly designed to construct in the direction of this disciplinary core thought.
Suppose you discover a fossil at one place that can’t be dated using absolute methods. That fossil species may have been dated some place else, so you’ll have the ability to match them and say that your fossil has an analogous age. Some of probably the most useful fossils for relationship purposes are very small ones. 
For example, microscopic dinoflagellates have been studied and dated in nice element around the globe. Correlation with them has helped geologists, such as Professor James Crampton, date many New Zealand rocks, together with these containing dinosaurs.