How is the currently detectable evidence of the Yarrabubba structure different from its original form?

Answer

It exists only as a subtle chemical and structural signature deep within the crust

The Yarrabubba crater is heavily eroded; it does not appear as a defined bowl or rim but rather as subtle chemical and structural evidence locked deep within the crust.

How is the currently detectable evidence of the Yarrabubba structure different from its original form?
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