Tree ring dating worksheet

Overlapping and correlating rings have been used to produce “chronologies” of past years.

Linear sequences of rings are obtained by cross-matching tree ring patterns from living trees and those from older dead wood.

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.

They investigate how a tree grows, how and when it adds a new ring, effect of nutrients, rainfall, etc., over a range of related conditions.

Hundreds of individual trees have been observed over multi-year periods.

But how valid is the assumption of one ring per year in a climate where tree-growing conditions are variable?

That very assumption is regularly put to the test by research foresters.

Thus, far from disproving biblical history, tree ring studies provide supportive and instructive information about true history.These are not mere ring-counting efforts on living and dead trees, but an observation of living trees and how they react to ambient conditions—how and when they make a ring.It has been found that all trees, even slow-growing ones, respond dynamically to tiny environmental changes, even hourly changes in growing conditions. The giant sequoia trees of California are known to live over 3,000 years, discerned through tree ring dating.Under normal circumstances, woody trees add one ring per year.

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