Tree ring dating database

The center of these circles, or the absolute core of the tree, is known as the pith.

Recent research on seasonal effects on tree rings in other trees in the same genus, the plantation pine , has revealed that up to five rings per year can be produced and extra rings are often indistinguishable, even under the microscope, from annual rings.A much simplified version of the "Tick-box" sheet, showing some of the stylistic features that can be 'ticked' and their approximate date ranges, is shown below: To help you understand the terms used in the "Tick-box" sheet, you can download an illustrated glossary of building features.To ensure common nomenclature, the Council for British Archaeology's (CBA) illustrated glossary of timber-framing terms has generally been used, and this book provides a useful and extensive guide to features in timber-framed buildings.From the beginning of history, we have relied on trees of various types to meet our needs.Much can be learned about a species of tree and its environment by discovering its age, and researchers employ several methods to date trees.