Ignimbrite Gallery
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Fiamme!This rock is a “welded tuff”. Volcanoes explode when gases trapped in bubbles inside of molte
adventurous-watermelon:Geologic heroin at the Pallisades of John Day Fossil Beds Nat'l Monument, Cla
EVIDENCE FOR A RAPID REVERSAL OF THE GEOMAGNETIC FIELD 41,000 YEARS AGOMagnetic studies performed on
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