Absolute dating techniques
Many geologists claim that radiometric “clocks” show rocks to be millions of years old.
To get to that point, there is also a historical discussion and description of non-radiometric dating methods.
The example used here contrasts sharply with the way conventional scientific dating methods are characterized by some critics (for example, refer to discussion in "Common Creationist Criticisms of Mainstream Dating Methods" in the Age of the Earth FAQ and Isochron Dating FAQ).
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In no way are they meant to imply there are no exceptions.