What conceptual error has the researcher made

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A researcher analyzes an obsidian (volcanic glass) arrowhead and finds that the ratio of 40Ar/40K is 1:1.  The researcher declares that the arrowhead is 1.3 billion years old and declares that our entire geologic timescale is invalid because there was no one around to make arrowheads 1.3 billion years ago. What conceptual error has the researcher made? Note-there was no math error AND it is not due to Argon gas escaping (vitrification).

Reference no: EM133250127

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