Kharchinskii and Zarechnyi volcanoes, unique centers of Late Pleistocene magnesian basalts in Kamchatka: Composition of erupted rocks

• Main Authors: Volynets O.N., Melekestsev I.V., Ponomareva V.V., Yogodzinski J.M.
• Format: Text
• Language: English
• Published: 1999
• Subjects: 38.37.25 Вулканология; Харчинский; Заречный; Tolbachik; Kamchatka
• Online Access: http://repo.kscnet.ru/1137/

Most of the Kharchinskii and Zarechnyi products, as well as those of the Kharchinskii cinder cones, are magnesian rocks. Mineralogical data suggest that both the basaltic and the andesitic magma were rich in water (≥3-4 and >6-7 wt., respectively) and crystallized at high oxygen fugacity (2.0-2.5...