Response to austin on carbon dating. Austin (soft rock geology), An essay on radiometric dating, David Plaisted has written a.
Carbon dating relies on the accumulation of radio active carbon from ingested plant material within an animal's tissue while it is alive and the subsequent decay of that carbon when the animal dies. Fission track dating relies on the natural fission of radio active materials within rocks to leave tracks within rock crystals. These tracks can be counted, thereby dating when the rock was formed or last heated above a certain temperature.
Tree ring dating uses the nature of the growth of trees to date the time that a tree stopped growing; the time that the tree was cut down. Thermoluminescent dating uses the ability of certain minerals to emit light when heated.