Dendrochronology cross dating
Thus a ring may be missing from one core sample, but present in a second core sample from the same tree at a different point on the trunk's circumference.
Second, very rarely an exceptionally slow-growing tree will not lay down a ring at all on its trunk in a poor (cold, dry) year; this can be detected by comparison with the rings of neighbouring, faster-growing trees which do show a narrow ring for the bad year in question, or by comparison with branches higher in the crown of the same tree, where the ring will be produced.
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.
- MPF , (UTC)No problem on the second; although wood is of course only produced by a tree while still alive, once dead, the old wood remains available for study until such time as it decays away.
In the case of Great Basin Bristlecone Pines studied by Ferguson, this is a very long time; he found trees that had been dead for several thousand years and was still able to study the growing conditions they had been alive in.
There are a few particularly detailed, applicable peer-reviewed articles in the "growth rings" section, especially (Walker, 2013). Ping , (UTC) Dendrochronology is one method used to calibrate C-14 dating--Vsmith , (UTC) How is the fact that one of the more probable measurements of bristlecone pine ring thickness is ZERO factored into dendochronology using such measurements?
The existence of incomplete rings was known about long before Ferguson's studies started, so he was well aware of the potential for its occurrence. auto-correlation coefficient) Dan Watts , (UTC)Whole fallen trunks with major branches still on, which comes inbetween the two I guess.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.After reading, I understand better the concept of tree rings and some of the finer details that complicate the issue (such as alternating poor/favorable conditions and "missing rings"), but I don't understand all of the applications to understanding past climates. Please feel free to edit the article to make these points clear.The sources used in the article are mostly peer-reviewed and seem relevant for the most part. Jclerman (talk) , 9 November 2008 (UTC) How does dendrochronolgy correlate with C14 dating?
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