Ignimbrite
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Fiamme!This rock is a “welded tuff”. Volcanoes explode when gases trapped in bubbles inside of molte
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
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
EVIDENCE FOR A RAPID REVERSAL OF THE GEOMAGNETIC FIELD 41,000 YEARS AGOMagnetic studies performed on
Stripy opal from Ethiopia Layers of precious opal are interleaved with the altered ignimbrite (volca
Stripy opal from Ethiopia Layers of precious opal are interleaved with the altered ignimbrite (volca
Opaline seascapeA lush specimen from the rhyolite and ignimbrite cliff face at Wello in Ethiopia res
Opaline seascapeA lush specimen from the rhyolite and ignimbrite cliff face at Wello in Ethiopia res
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