@article {,
	title = {Structure and emplacement of a rhyolitic obsidian flow; Little Glass Mountain, Medicine Lake Highland, northern California},
	journal = {Geological Society of America Bulletin},
	volume = {94},
	year = {1983},
	note = {Cited by Francis and Oppenheimer 2004: 163 for obsidian },
	pages = {362-380},
	author = {Fink, Jonathan H.}
}