DID YOU KNOW....?

that as a general rule, only volcanic and igneous rocks (those rocks 
which were once in a molten or liquid form) can be dated by 
radiometric dating schemes? Several methods have been devised which 
can, in principle, date, such rocks, but in each case several 
assumptions must be made which may, or may not be accurate.

The scientific literature is full of cases where the method provides 
dates which cannot possibly be true. For instance, historic lava flows 
are frequently dated as millions of years old. A most interesting 
example is in the Grand Canyon, site of ongoing ICR research. The 
lavas at the top of the Grand Canyon are dated by some methods as over 
a billion years older than those in the bottom of the canyon!!

Given the questionable assumptions involved, it is no wonder that so 
many results are thrown out. The true wonder is that some of the rest 
come to be accepted.

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