Shatter cone
Geological feature in bedrock resulting from extreme mechanical shock
Shatter cone
Shatter cones are rare geological features that are only known to form in the bedrock beneath meteorite impact craters or underground nuclear explosions. They are evidence that the rock has been subjected to a shock with pressures in the range of 2–30 GPa (290,000–4,350,000 psi).
Read on Wikipedia · Image Johannes Baier, CC BY 3.0
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