The Lunar Mare Are Radioactively Dated At

question 106

Multiple Choice

The lunar mare are radioactively dated at:

• A)4.6 billion years old, forming first among the lunar features.
• B)4.2-3.9 billion years old, comparable to the adjacent highlands.
• C)3.9-3.2 billion years old, forming after most of the bombardment was over.
• D)3.5-2.5 billion years old, similar to the formation of our own oceans.
• E)less than a billion years old, the most recent additions to the Moon.

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