TY - SER AU - Boily,M AU - Ludden,J.N AU - Brooks,C TI - Geochemical constraints on the magmatic evolution of the pre- and post-Oligocene volcanic suites of southern Peru: implicatiosn for the tectonic evolution of the Central Volcanic Zone SN - 00167606 N1 - bibliogr. p. 1578-1579 ER -