1. Long, L. E., and Lambert, R. St. J., in The British Caledonides (edit by Johnson, M. R. W., and Stewart, F. H.), 217–247 (Oliver and Boyd, Edinburgh, 1963).
2. Johnson, M. R. W., and Sheperd, J., Scott. J. Geol, 6, 228–229 (1970).
3. Dewey, J. F., and Pankhurst, R. J., Trans. R. Soc. Edinb., 68, 361–389 (1970).
4. Garson, M. S., and Plant, J., Nature, phys. Sci., 242, 34–47 (1973).
5. Lambert, R. St. J., Proc. geol. Soc., 1652, 243 (1969).