The Geochemistry of Huaynaputina Volcano, Southern Peru

scarce. We detail here some data from the volcanic centre of Huayanaputina in Southern Peru. The Volcano Huaynaputina is situated at 16O35'03" S: 70°52'00"W in the province of Moquegua, Southern Peru at approximately 80 km east of the town of Arequipa. The last recorded eruption from ths volcano was in 1600 when a series of large plinean type eruptions took place lasting for approximately one month. From contemporaneous accounts, the ash and pumice fall out from this series of eruptions was extremely heavy, and resulted in a large loss of life over a fairly wide area. At the same time records also show that large pyroclastic flows descended the valley of the Rio Tambo (Figure 1 .) reaching the coast some 130 km from the source. In ths paper we detail the geochemistry of the products from this last eruwon together with rocks from earlier eruwons and attempt to show the geochemical evolution of this typical CVZ calc-alkaline volcano.