Geologic time scale relative dating james arthur dating rita ora
The study of strata is called stratigraphy, and using a few basic principles, it is possible to work out the relative ages of rocks.
Relative dating puts geologic events in chronological order without requiring that a specific numerical age be assigned to each event.
The age of the fossil must be determined so it can be compared to other fossil species from the same time period.
Understanding the ages of related fossil species helps scientists piece together the evolutionary history of a group of organisms.
The secondary rocks were thought to include interlayered basalts, which Werner thought formed by combustion of buried coal layers.
The Scottish geologist James Hutton (1726-1797) argued that granite and basalt by solidification within the earth (as opposed to precipitating in from oceanwater).