Dendrochronology is the scientific method of tree-ring dating. Americans first developed it in the early 20th century and now "dendro" is a. discovery of archaeological tree-ring dating by A E. Douglass and others has been and archaeological definition of Pueblo n, and then Pueblo I, sites in the.
Luckman,; Luckman and Colenutt, The general absence of trees has obviously discouraged the pursuit of dendrochronology in the define tree ring dating Interior Plains. Although a belt of aspen parkland extends across the prairie provinces, much of the original aspen polar was removed for crop production and this tree species is much inferior to coniferous trees for tree ring research Fritts, Methods The cores and disks are processed using standard laboratory techniques Stokes and Smiley, Cores are glued to a grooved pieces of wood such that the tracheids were approximately 30o from their original vertical orientation, ensuring maximum visibility of the latewood to earlywood transition between successive years.
The wood is sanded with progressive finer paper to expose the growth rings for counting and measurement of ring width. The fundamental technique in dendrochronology is cross-dating, whereby distinctive series of narrow and wider tree rings are identified and matched among trees of different ages. Calendar years can then be assigned to rings from dead wood.
This extends tree-ring chronologies beyond the life spans of living trees, and enables dating of pre-historic events e. Cross dating among tree ring series of about the same length and age enables the detection of missing and false rings. Annual growth rings can be missing in unusually cold or dry growing seasons.
In the next instalment of the Archaeology set of videos, I get to show you my wood!! Yep, we're talking about tree ring dating, Dendrochronology.