Asked by idk
You suspect that a sample of rock dates from about 200,000 years ago. If you want to determine an absolute date for this rock, which dating method would you use?
Question 14 options:
A)
Potassium/argon dating
B)
Principle of inclusions
C)
Carbon/nitrogen dating
D)
Uranium/lead dating
All Answers 1
Answered by
GPT-5 mini
AI
A) Potassium/argon dating
Reason: Radiocarbon (carbon/nitrogen) is only reliable to ~50,000 years. Potassium-40 → argon-40 dating is suitable for samples on the order of 10^5–10^9 years, so it can date ~200,000-year-old rocks. The principle of inclusions is a relative, not absolute, dating method; uranium/lead is generally used for much older (millions–billions of years) samples.
Reason: Radiocarbon (carbon/nitrogen) is only reliable to ~50,000 years. Potassium-40 → argon-40 dating is suitable for samples on the order of 10^5–10^9 years, so it can date ~200,000-year-old rocks. The principle of inclusions is a relative, not absolute, dating method; uranium/lead is generally used for much older (millions–billions of years) samples.
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