How a ring of mountains forms inside a crater

Rocks drilled from Mexico’s Chicxulub impact confirm dynamic collapse theory

Chicxulub illustration

RINGING TRUE  A ring of mountains (inner circle) inside large impact craters, such as the one left by the famous dinosaur-killer at Chicxulub (illustrated above), form when rocks from deep underground rebound upward and collapse outward following the impact, new research suggests. The outer ring is the crater edge.

Detlev van Ravenswaay/Science Source

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