Zircons Found in Continental Rocks Give Evidence That Continental Crust

question 44

Multiple Choice

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

• A) 1.9 billion years ago
• B) 10,000 years ago
• C) 564 million years ago
• D) 70 million years ago
• E) 4.4 billion years ago

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