Feb. 1-19: Rock Cycle, Relative Dating, Fossils

Over the last few weeks we've been finishing the rock cycle and moved in to looking at the geologic column. From the column we can tell how old rock layers are (relatively). Rock layers near the bottom of the column are older than those on top of it because they were deposited first. We can use this idea to determine the age of fossils as well. See this website for a brief and simple overview for how fossiliztion occurs.