The conventional uniformitarian age for these samples is well beyond 100,000 years (in most cases it is tens to hundreds of millions of years).
The samples include coal, anthracite, and natural gas, as well as wood, shells, foraminifera, and other fossils.  Even some Precambrian graphite samples have carbon 14 ages of about 60,000 years!
Some of the researchers tried to explain this carbon 14 as contamination, but none of their attempts to clean it were successful.
Here we have additional evidence that samples alleged to be hundreds of millions of years old are in fact 60,000 years or less old.
If decay was accelerated the true age would be even less than 60,000 years.