Righter, Kevin Alkaline Lavas in the Volcanic Front of the Western Mexican Volcanic Belt: Geology and Petrology of the Ayutla and Tapalpa Volcanic Fields - Oxford Oxford University Press December 2001 - pp. 2333-2361 ilus., tbls. ISSN: 0022-3530 Subjects--Topical Terms: BASALTO ALCALINOLAVASMETASOMATISMOPETROLOGÍASUBDUCCIONVOLCANOLOGIA Subjects--Geographic Terms: MEXICO