Celestial dating 17 rate date

Widmanstatten patterns have never been produced in the laboratory.This is because nickel-iron crystals can only grow this large (several centimeters) when they cool at an extremely slow rate of about 100-10,000 degrees Celsius per million years, from a starting point of about 500-700 degrees Celsius Even at its shortest (starting at 500 degrees and cooling to -73 Celsius at 10,000 degrees per million years), this process would still take 57,300 years.Thus, a tree's age can be found by counting the rings.Dendrochronology is the only method on this list that can date events precisely to a single year.Moreover, these dating methods are not mutually exclusive: where their range, accuracy, and applicability overlap, the dates they produce agree with each other.(For example, all dating methods for the age of the Earth agree on a 4.4-4.6 billion year-old world.) This is important especially because YECs regularly claim that radiometric dating is unreliable — yet radiometric dating is unnecessary to prove an old universe, because we have many methods of dating at our disposal.The thickness of tree rings varies with the local seasonal weather, so a sequence of thick ring, thin ring, thin ring, thick ring, thick ring, thick ring, thin ring, thick ring shared by two trees is strong evidence that the corresponding rings formed at the same time.

It is possible that these rates changed — but under uniformitarianism, which is necessary for science to function, we must assume that rates did not change unless there is evidence for this change.For YEC to be true, each of these fields would have to be incorrect about almost everything.Some of these reported ages have indeed been revised based on new evidence (sometimes larger, sometimes smaller), but never to the orders of magnitude required by YEC.Dendrochronology is a method of dating based on annual tree growth patterns called tree rings.Tree rings are the result of changes in the tree's growth speed over the year, because trees (in normal conditions in temperate regions) grow faster in the summer and slower in the winter.

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