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cryptovolcanic structure

A circular structure lacking evidence of shock metamorphism or of meteorite impact and therefore presumed to be of igneous origin, but lacking exposed igneous rocks or obvious volcanic features; a rock structure produced by concealed volcanic activity. Preferred term: cryptoexplosion structure.

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  • ed.young
  • (Milwaukee, United States)

  •  (V.I.P) 21084 poin
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