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Suddenly the discussion in another thread about Rohl's revised chronology becomes highly relevant, because if carbon dating has been calibrated against incorrect recent historical dates, the extent of the carbon effect could be exponentially overemphasized for the earlier dates.
That's really desperate clutching at straws there. What makes you think that Rohl's ideas are even relevant ?
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As for other dating methods, its possible they were cherry picked for their apparent agreement.
Is it ? Are you REALLY going to stoop to conspiracy theories ?
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I have yet to see a convincing argument for either varves or dendrochronology being convincing arguments to strengthen current dating assumptions.
Probably because you dismiss them out of hand at the slightest excuse.
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Varves are often mistaken as annual, when there is a possible tidal development. Lake Suigetsu is one example where on closer analysis the varves are more obviously tidal in nature. They were formed mainly by diatom blooms, some diatoms are freshwater diatoms, sensitive to salinity. Until a few hundred years ago, these lakes were mainly freshwater, but being so close to the ocean would have been affected by rising salinity every spring tide. The ~50 000 years of varves should quite simply be divided by 12.2 to reflect the 12 spring tides a year.
Perhaps you would like to provide some evidence for that. And explain how it's even possible given the results of the study (is it really plausible that ALL carbon dates are wrong by a factor of 12.2 ?). Don't forget to deal with the other data used as cross-checks. I don't think that Lake Soppensee is likely to be tidal !
Obviously you haven't thought about it, you're just thoughtlessly throwing out an excuse without even considering whether it could reasonably be true.
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As for dendrochronolgy, the concept is often cited, but no convincing argument has been put forward for those periods when an overlap of ring sequences is not easily matched between trees. ie easy to make mistakes. Hoping someone can post a convincing set of data to show the reliability of dendrochronology. Also taking into account some trees show two rings per year if there are two rainfall seasons.
And more clutching at straws. Even under your assumptions C14 dating should work as a RELATIVE dating system, so we can be reasonably sure of any sequences used in C14 calibration. Any major errors should be obvious.
Occasionally producing 2 rings a year is hardly a big enough problem if you are trying to argue that the dates are wrong by a factor of 12! That should be obvious.
This brings me to the difference between scientists and cranks. Cranks assume that they are unquestionably right and look for excuses to declare that they are right (and even there they are careless). Scientists try to see the whole picture and understand what is going on. This is why science is so often right and cranks are so often wrong.