@article {6122,
	title = {An Early Ordovician Sinkhole Deposit of Volcanic Ash and Fossiliferous Sediments in East Tennessee},
	journal = {The Journal of Geology},
	volume = {52},
	year = {1944},
	month = {July},
	pages = {235-249},
	keywords = {Geological formations, Geology, Sedimentary rocks},
	author = {Laurence, Robert A}
}
