Volcanic glass

Volcanic glass
Results: 21

#	Item
21	FULGURITES FROM MOUNT THIELSEN, OREGON Add to Reading List Source URL: www.usfcam.usf.edu Language: English - Date: 2006-01-18 10:03:49 Cascade Range Lightning Cascade Volcanoes Umpqua National Forest Volcanic rocks Mount Thielsen Fulgurite Glass Lightning strike Geology Petrology Volcanism

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