Question

1. which radiometric dating method is used to date the oldest rocks? titanium-neon uranium-lead carbon-14 aluminum-chromium

Explanation:

• Titanium - Neon: There is no such standard radiometric dating method.
• Uranium - Lead: Uranium - lead dating has a long half - life (e.g., for \(^{238}U\) with a half - life of about \(4.5\times10^{9}\) years), which makes it suitable for dating very old rocks (even up to the age of the Earth).
• Carbon - 14: Has a relatively short half - life (\(t_{1/2}=5730\) years), so it is mainly used for dating materials up to about 50,000 - 60,000 years old.
• Aluminum - Chromium: Not a common radiometric dating method for rocks.

Answer:

Uranium - Lead