Classification, petrology and tectonic setting of boninites; boninites and high-Mg-andesites - tectonics and petrogenesis; high K2O rocks with high MgO, high S;O affinities; experimental studies on boninitic petrogenesis; experimental evidence for the origin of boninites - near liquidus phase relations to 7.5Kbar; geochemistry and petrogenesis of archaen and early proterozoic siliceous high magnesian basalts; significance and origin of boninite-like rocks associated with the Bushveld complex; petrology and geochemistry of early proterozoic high-Mg dykes from the Vestfold Hills; geological setting, petrology and chemistry of Cambrian boninites and low-Ti tholeiite lavas in West Tasmania; boninite lavas in Appalachian ophiolites - a review; petrology of boninitic lavas from the Limassol Forest complex, Cyprus; contrasting boninite-tholeiite associations from New Caledonia; boninites and tholeiites from DSDP Site 45 Mariana torearo; petrogenesis of high-Mg and associated lavas from the North Tonga trench; TH, U and PB systematics of boninitic series volcanic rocks from Chicha-Jima, Bonin Islands, Japan; magnesian-andesites from Mexico, Chile and the Aleutian Islands - implications for magmatism associated with ridge trench collision.