Definition of chronometric dating
Though using similar methods, these two techniques differ in certain ways that will be discussed in this article.
This means that the oldest are the strata that are lying at the bottom.That may mean that another reversal is coming, but not for a few thousand years.The earth's magnetic field helps block out dangerous ionizing radiation from our sun.Subsequently, a diminishing field is likely to result in a significant rise in the frequency of radiation induced cancers in the future.
Despite this limitation, paleoanthropologists have found dating by association with polar reversals to be a helpful additional method of tracking the evolution of our fossil ancestors in regions such as East Africa where there has been frequent volcanic activity leaving clear thermoremnant magnetic evidence.
Absolute dating, on the other hand is capable of telling the exact age of an item using carbon dating and many other techniques that were not there in earlier times.