Zircons Found in Continental Rocks Give Evidence That Continental Crust

question 119

Multiple Choice

Zircons found in continental rocks give evidence that continental crust was forming as long ago as ________.

• A)4)4 billion years ago
• B)1)9 billion years ago
• C)564 million years ago
• D)70 million years ago
• E)10,000 years ago

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