Pages authored by N. Gary Lane:
Bedrock Geology /
The Rock Cycle
Rocks at the surface of the earth are of many different ages. They range from over three billion years old to less than one million years old. We know that one of the laws of physics is that under ordinary circumstances matter can neither be created or destroyed. We can then ask the question, from what matter are new, younger rocks formed?
In geology there are two main uses to which fossils are put. These are biostratigraphic correlation and environmental interpretation. Before discussing these two points, I should say that these two utilities of fossils are not necessarily those that are most interesting to a paleontologist who studies fossils.