Tree ring dating method

Rated 4.44/5 based on 892 customer reviews

But for the specimen to be useful in extending the tree-ring chronology, the absolute calendar age of its rings must be determined.

Under normal circumstances, woody trees add one ring per year.Insect infestation clearly manifests itself, as does disease or fire damage. Day length, amount of sunshine, water potential, nutrients, age of tree, temperature, rainfall, height above ground, and proximity to a branch all impact tree growth and tree ring production.By assuming the outer ring records the most recent year and that each ring signals one year, a researcher can determine the “date” of a particular ring simply by counting rings.By matching ring-width patterns in a specimen of known age (starting with living specimens) to ring-width patterns in an older specimen, the proper placement of the older specimen is determined.Tree-ring chronologies have been extended to 10,000 years before present in this way.

Leave a Reply