What is tree ring dating
Dendrochronology is the formal term for tree-ring dating, the science that uses the growth rings of trees as a detailed record of climatic change in a region, as well as a way to approximate the date of construction for wooden objects of many types.As archaeological dating techniques go, dendrochronology is extremely precise: if the growth rings in a wooden object are preserved and can be tied into an existing chronology, researchers can determine the precise calendar year--and often season--the tree was cut down to make it.Definitions The Principle of Cognitive Classification The Principle of Crossdating The Prinicple of Trees as Dynamic Entities The Principle of Plurality and Parsimony The Principle of Aggregate Tree Growth The Principle of Limiting Factors The Principle of Replication across Spatiotemporal Scales The Principle of Site Selection (dendron = tree, chronos = time, logos = word = the science of): The science that uses tree rings dated to their exact year of formation to analyze temporal and spatial patterns of processes in the physical and cultural sciences.The science that uses tree rings to date when timber was felled, transported, processed, or used for construction or wooden artifacts.Environmental inputs into the cambium are primarily regional climatic variations, changes in temperature, aridity, and soil chemistry, which together are encoded as variations in the width of a particular ring, in the wood density or structure, and/or in the chemical composition of the cell walls.At its most basic, during dry years the cambium's cells are smaller and thus the layer is thinner than during wet years.
The science that uses tree rings to study factors that affect the earth's ecosystems.
Example: dating the tree rings of a beam from a ruin in the American Southwest to determine when it was built.
The science that uses tree rings to study present climate and reconstruct past climate.
Example: analyzing changes in tree growth patterns via tree rings to date a series of landslide events.
The science that uses tree rings to date and study past and present changes in glaciers.