Valles Caldera
I wonder that the Valles Caldera of the Jemez Mountain Range, though now classified as "resurgent," was initiated by impact.
I suspect that an impact where the Earth's magma subsurface level is "just right," effectively "fractures" the crust of the earth and in slow motion, resembles something like this:
Combine High Speed and Time Lapse, BMumford.com
Ulysses Patera on Mars, showing two impact craters of later dates than the resurgent structure.The smaller impacts did not cause "fractures." While the larger, older impact did, causing a large outward plume, some of which then collapsed back upon the hole, the heat and heat of vibration smoothing the matter --- whereas in the case of the Valles Caldera, the resulting splash is Redondo:
It's just a theory.
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Then, in the above article:
Silverpit's main crater is 1.5 miles (2.4 kilometers) wide with a central peak that probably formed when the Earth rebounded from the impact of the incoming cosmic projectile, scientists said.
I suspect that an impact where the Earth's magma subsurface level is "just right," effectively "fractures" the crust of the earth ... (Ulysses Patera on Mars, showing two impact craters of later dates than the resurgent structure.)Impressive.