Mr. Putter and his cat Tabby are excited to participate in a library read-aloud program, but they are nervous when Mrs. Teaberry and her unpredictable dog Zeke want to join. Despite Zekeâs antics, their fears are unfounded when they discover that the event is a success for all involved.
Correlating Rock Layers correlation is the matching of rock layers from one area to another. For example, a geologist might wish to know if a layer of limestone in NY is the same layer of limestone found in MI. Correlation can be useful because valuable minerals can be found in specific layers of rock, and if we can identify the same layer far away we might be able to exploit the resource over a large area.
Rather than roughly correlating terrestrial layers based on their associations with oceanic rock layers, we can now compare dates of terrestrial layers directly. As more and more rock layers are tagged with absolute dates, the geologic time scale is getting finer and finer resolution. As a result, we have a much better understanding the timing of events in Earthâs history and in Lifeâs history.