A cemetery can be an interesting place to observe weathering. The death date on the tombstone tells how old the stone is, while the appearance of the carvings gives an impression of how much weathering has occurred. A typical cemetery will include tombstones made of several different kinds of rock, so rates of weathering can be compared.
- Wile, Dr. Jay L. Exploring Creation With General Science. Anderson: Apologia Educational Ministries, Inc. 2000