Dendrochronology cross dating
In 1901, he noticed ring-width variations on a cut log and reasoned that these were controlled by the tree's environment (Fritts, 1976).Douglass (1920) illustrated the relationship between climate and ring width by plotting both against time, and introduced the technique of cross dating by correlating ring-width signatures (sequences of wide and narrow rings) among trees distributed over large areas.
Carbon-14 is a naturally occurring isotope of the element carbon.
In seasonal climates, trees preserve a continuous record of annual events, in particular, climate.
Dendrochronology, the study of the annual growth in trees, is the only method of paleoenvironmental research that produces proxy data of consistently annual resolution.
Initially the cells are thin walled to conduct the abundant spring soil moisture.
It does discuss the relative time-span the proxy covers, but it doesn't discuss other pros/cons. Anth1112 (talk) , 22 February 2017 (UTC) Do you mean "annual rings"? -phma The growth ring is the annular region consisting of the earlywood and the subsequent latewood, moving away from the wood center (pith).
One question I had when I finished reading the article was, "How does this proxy compare to others? From AN INTERACTIVE IMAGE ANALYSIS SYSTEM FOR DENDROCHRONOLOGY by Giribalan Gopalan(talk) , Jclerman (talk) , 9 November 2008 (UTC)9 November 2008 (UTC) The Google polling approach is not scholar-wise.Cronin's textbook mentions that calibration is one of the most important aspects of using proxies, and it is only briefly mentioned in the article. To improve this article, I would have broadened its scope.I took a class before where we did discuss the calibration curve of dendrochronology, but the article doesn't explain how or even why this needs to be done. "Dendrochronology in Climatology - the State of the Art." Dendrochronologia 20.1-2 (2002): 95-116. I would include more details about the calibration, the science of actually "reading" the tree rings, and more data about how different trees are affected by climate changes.Citations were used correctly, and there was nothing in the article that seemed "off" or made me really question its validity. "Temperature Changes On The Tibetan Plateau During The Past 600 Years Inferred From Ice Cores And Tree Rings." Global & Planetary Change 69.1/2 (2009): 71-78. I think the important thing to bear in mind is that dendro, like many other incremental dating techniques, can often lack precision (relatively) but still yield accurate results.In some ways the precision : accuracy relationship here is opposite to that of C14 dating (i.e.In terms of discussing dendrochronology as a paleoclimate proxy, this article needs a lot of work. This article in particular is what I would have modeled the Wikipedia article after.