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2. Annells, R. N., 1973, Proterozoic Flood Basalts of Eastern Lake Superior: The Keweenawan Volcanic Rocks of the Mamainse Point Area, Ontario: Geological Survey of Canada, Paper 77-10, 51 p.
3. ___, 1974, Keweenawan Volcanic Rocks of Michipicoten Island, Lake Superior, An Eruptive Center of Proterozoic Age: Geological Survey of Canada, Bulletin 218, 141 p., and Map 1353A.
4. Baragar, W. R. A., 1977, Volcanism of the stable crust; pp. 377–405 in W. R. A. Baragar, L. C. Coleman, and J. M. Hall (eds.), Volcanic Regimes in Canada: Geological Association of Canada, Special Paper 16, 476 p.
5. Bishop, D. T., 1973, Petrology and geochemistry of the Purcell sills in Bondary County, Idaho; pp. 15–66 in Belt Symposium 1973, Volume 2: Idaho Bureau of Mines and Geolog and the Department of Geology, University of Idaho, Moscow, Idaho, USA, 138 p.