Activity dating relative
the determination of the age of an object, of a natural phenomenon, or of a series of events.
There are two basic types of dating methods, relative and absolute.
Pollen analysis, or palynology, involves the microscopic examination of fossil pollen grains in stratified peat and lake deposits.
Technological changes can be used for relative dating of archaeological material.
The three-age system devised by the Danish archaeologist Christian Thomsen in the 1830s made use of technological criteria.
In climates with well-marked alternations of seasons (either cold and warm or wet and dry), the wood cells produced when water is easily available and growth is rapid..... Tree ring growth reflects the rainfall conditions that prevailed during the years of the tree's life.
Because rainfall patterns vary annually, any given set of tree ring patterns in a region will form a relatively distinct pattern, identifiable with a particular set of years.