Why did the geological signatures of the Yarrabubba impact survive billions of years of erosion?

Answer

The site sits within the stable Yilgarn Craton.

The location within the Yilgarn Craton, the oldest and most stable section of continental crust, meant that the deep rock layers containing the impact evidence remained relatively intact.

Why did the geological signatures of the Yarrabubba impact survive billions of years of erosion?
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