@article {9499,
	title = {Balsam Lake Chert from the Upper Member of the Middle Ordovician Bobcaygeon Formation of Southern Ontario},
	journal = {Canadian Journal of Archaeology/Journal canadien d{\textquoteright}arch{\'e}ologie},
	volume = {8},
	year = {1984},
	pages = {135-148},
	abstract = {<p>Balsam Lake chert, a diagnostic lithic material characterized by its dark bluish-gray colour and peloidal texture, is of interest because of its use by native peoples of southern Ontario for the manufacture of tools and weapons. Archaeologists have found this material at various sites but its geological source has until now remained unknown. We have located two in situ sources of the chert in the upper member of the Bobcaygeon Formation on Balsam Lake. This chert is apparently, discontinuously bedded and restricted to one horizon, an important factor in tracing it elsewhere in the area and in locating Indian quarry and workshop sites.</p>},
	author = {Peter H. von Bitter and Betty Eley}
}
