Sitting on a tree dating
These can be tens of metres thick and stretch for many hundreds of square kilometres.This laboratory uses the more sensitive accelerator mass spectrometry (AMS) technique for radiocarbon analysis, now recognized as producing the most reliable results, even on minute quantities of carbon in samples. There was detectable radiocarbon in the coalified bark, yielding a supposed C ‘age’ of the bark places an ‘age’ limit on the immediately underlying silicified wood.Of course, if the wood really were 250 million years old as is supposed, one should not be able to obtain a finite age from radiocarbon—all detectable The most obvious objection that might be raised against these radiocarbon results by sceptics uncomfortable with the implications is that the minute quantity of radiocarbon detected in this fossilised tree stump is due to contamination. As qualified routine practitioners, they understand the problem with contamination, and how to avoid it in sample preparation.C) analyses to Geochron Laboratories in Cambridge, Boston (USA), a reputable, internationally-recognized commercial laboratory.
The laboratory staff were not told exactly where the samples came from, or their supposed evolutionary age, to ensure that there would be no resultant bias.
However, sometimes components can be identified—for example, fossilised tree stumps sitting on top of coal beds.
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