@article {,
	title = {Petrography and major element chemistry of the volcanic rocks of the Andes, southern Peru},
	journal = {Geochemical Journal},
	volume = {18},
	year = {1984},
	note = {Volcanism over the Thickest crust in the world (70km)},
	pages = {217-232},
	author = {Aramaki, Shigeo and Onuma, Naoki and Portillo, Felix}
}