1. Abbott, M. J.: Petrology of the Nandawar volcano, N.S.W. Australia. Contr. Mineral. and Petrol. 20, 115?134 (1969).
2. Abdel-Monem, A., Watkins, N. D., Gast, P. W.: Volcanic stratigraphy and magnetic polarity history of the Canary Islands. (Abstract.) Int. Ass. Volc. Tenerife (1968).
3. Aoki, K. I.: Clinopyroxenes from alkaline rooks of Japan. Am. Mineralogist 19, 1199?1223 (1964).
4. Bailey, D. K., Schairer, J. F.: Feldspar-liquid equilibria in peralkaline liquids-the Orthoclase Effect. Am. Sci. 262, 1198?1206 (1964).
5. Baker, I.: Petrology of the volcanic rocks of St. Helena Island, South Atlantic. Bull. Geol. Soc. Am. 80, 1283?1310 (1969).