Paleomagnetic dating method
Fortunately, there are other methods available to researchers.
Because all dating techniques may be subject to considerable error, reliability should be assessed by stratigraphic consistency between results of different dating methods or of the same method.
These techniques can be grouped as numerical, relative dating, and correlation.
Numerical techniques are best, but datable materials are often lacking, and in these cases age estimation must be made using relative-dating or correlation techniques.
(2000) Paleomagnetic Dating, in Quaternary Geochronology: Methods and Applications (eds J.
Lettis), American Geophysical Union, Washington, D.
Search for paleomagnetic dating method:
Since weather patterns tend to run in cycles of a number of years, the sequence of tree-rings in a region will also reflect the same cycling, as illustrated by the graph below.