This might include overwhelming links to a particular group of instruments, often related by their nationality.
In some cases, when one or more "same tree matches" are identified, these can strengthen an existing attribution, although tests have revealed that different workshops have been known to use wood that originated within a single tree.
You should collect the cores as close to the ground as possible, to get the maximum number of rings.
Since growth of the tree begins at the root system, a core taken above the base may have a much younger estimated age than one taken directly at ground level.
The main purpose of a dendrochronological test, is to determine when the tree used to make the soundboard of an instrument was growing.
A process known as cross-dating, identifies the similarities between the pattern formed by the tree-rings of a sample, and those of thousands of dated references.
The lab has developed a system for extracting miniature cores, opening up a whole new field of dating thin panels and art-historical objects such as doors and chests. The borer consists of three parts: the handle, the borer and the spoon. Stick the borer into the square hole in the handle and click the snap shut. When the borer is assembled, simply screw it into the tree.The Stokes and Smiley (1968) and Fritts (1976) books provide information about core collection.This has been successfully employed in dating the medieval chests at Magdalen College, Oxford, and doors from the Tower of London, Salisbury Cathedral, and the north door St. The Laboratory follows a rigorous publication policy, and have published all buildings dated each year, first through the Ancient Monuments Laboratory, and later independently.Other areas of research currently underway includes the analysis of cedar, aspen, and junipers from the Sierra-Nevada mountains of California, USA and which has culminated in the production of a 3500-year replicated chronology for Western Juniper. Ayotte On this page is some basic information about collecting tree cores. Areas where annual rings may be distorted, such as near branches on uphill or downhill sides of the trunk, should be avoided.Here you can also find a number of useful tips and solutions to problems: list of supplies you should have is found at: The Laboratory of Tree-Ring Research is a great place to start learning about the field of dendrochronology: Site selection depends on the question you are investigating. Once you have collected your cores, remove the taped ends to allow the cores to dry overnight or until needed.Rocky Mountain Tree-Ring Research is a nonprofit research organization founded in 1997 by Peter M. We provide expertise in tree-ring collection, dating, and analysis to answer a variety of basic and applied questions in fire and forest history, climatology, and ecosystem ecology, restoration, and management.The basics page contains some practical information on sampling, sample preparation, and how to keep your increment borers clean and sharp.These are generally organised by one person or group and have the advantage of producing a number of dated chronologies for a small region, thus allowing better results to be obtained through the multiplicity of local chronologies thus produced.Other work is for private house holders and English Heritage, as well as for Oxford Archaeology.