1. Pitman, W. C. III, and Talwani, Manik, Bull. Geol. Soc. Amer. (in the press).
2. Morgan, W. J., EOS, 51, 822 (1970).
3. Morgan, W. J., Nature, 230, 42 (1971).
4. Morgan, W. J., Geol. Soc. Amer. Mem. (in the press).
5. Eardley, A. J., Structural Geology of North America, second ed., 295 (Harper and Row, 1962).