Question: When did absolute dating techniques become available?

Dating techniques are procedures used by scientists to determine the age of a specimen. Relative dating methods tell only if one sample is older or younger than another; absolute dating methods provide a date in years. The latter have generally been available only since 1947.

How long has absolute dating been around?

Radiometric datingDating methodMaterial datedAge range datedLuminescenceTephra, loess, lake sedimentsUp to 100,000 years agoFission trackTephra10,000 to 400 million years agoPotassium-40 to argon-40Volcanic rocks20,000 to 4.5 billion years agoUranium-238 to lead-206Volcanic rocks1 million to 4.5 billion years ago1 more row•20 May 2011

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