1. Monger, J. W. H., and Ross, C. A., Canad. J. Earth Sci., 8, 259 (1971).
2. Irving, E., Paleomagnetism and its Application to Geological and Geophysical Problems, 130 (Wiley, New York, 1964).
3. Atwater, T., Geol. Soc. Amer. Bull., 81, 3513 (1970).
4. Grow, J. A., and Atwater, T., Geol. Soc. Amer, Bull., 81, 3715 (1970).
5. Yeats, R. S., and Engels, J. C., Geol. Soc. Amer. Abstracts with Programs, 2, 730 (1970).