Why is the geolgical column not really evidence for evolution?

The geological column is not direct evidence for evolution because it primarily represents a chronological sequence of rock layers and fossils, not a documentation of evolutionary processes. Evolutionary evidence comes from the patterns of similarities and differences among living organisms, the fossil record, comparative anatomy, embryology, and molecular Biology. The geological column helps provide a context for understanding the timing of evolutionary events but does not in itself prove the theory of evolution.