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English - Cornell Tree-Ring Laboratory - Cornell University 2025

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The document provides guidelines for collecting wood and charcoal samples for dendrochronological analysis at the Malcolm and Carolyn Wiener Laboratory at Cornell University. It emphasizes the importance of sample quality, specifically ring count, and outlines proper sampling techniques for both unburned and carbonized wood. The document also details packaging and shipping instructions to ensure sample integrity, while cautioning against common mistakes such as encasing samples in plaster or tinfoil. Overall, it aims to facilitate accurate dating and environmental studies through careful collection practices.

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What is the Aegean Dendrochronology project?

Our key long-range goal is to build long multi-millennial scale tree-ring chronologies in the Aegean and Near East that will extend from the present to the early Holocene to cover, broadly speaking, the last 10,000 years of human and environmental history.

What is the theory of dendrochronology?

Dendrochronology is the precise and reliable assignment of the tree rings year of formation. It is defined as the study of the chronological sequence of annual growth rings in trees (Ferguson, 1970).

What is the downside of dendrochronology?

The greatest weaknesses are that: tree-ring chronologies only capture a fraction of climate variability; their response may be limited to specific seasonal windows some do not respond directly to a single monthly or even seasonal climate variable; they may not record the climate variables of interest to

How accurate is dendrochronology?

Even given this amount of material, and a suitable local master curve, the method is not always successful, but where it is it yields a very precise date, giving not only the exact year, but even the season of growth of the outermost ring present.

Is Cornell lab associated with Cornell University?

The Cornell Lab of Ornithology is a member-supported unit of Cornell University in Ithaca, New York, which studies birds and other wildlife.

What is the purpose of dendrochronology?

Dendrochronology can show us more than just the age of trees. It can also give us a glimpse into past climatic conditions. In temperate zones, one year of growth will equal one tree ring. A wet growing season makes a wider ring, while a dry growing season makes a narrower ring.

English - Cornell Tree-Ring Laboratory - Cornell University 2025

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