Petrological and chronological study of primitive high-Mg andesite from monogenetic volcanoes in the fore-arc region of northern Kamchatka Peninsula

• Main Authors: Nishizawa Tatsuji, Nakamura Hitomi, Churikova Tatiana, Gordeychik Boris, Ishizuka Osamu, Iwamori Hikaru
• Format: Text
• Language: English
• Published: Hokkaido University 2014
• Subjects: 38.33.17 Геохимия природных процессов; Kamchatka Peninsula; Kamchatka
• Online Access: http://repo.kscnet.ru/3043/; http://repo.kscnet.ru/3043/1/Nishizawa_2014%20JKASP.pdf; http://hkdrcep.sci.hokudai.ac.jp/map/jkasp2014/pdf/J32.pdf

Primitive high-Mg andesites (HMA) exhibit low FeO*/MgO (FeO*, total iron) and high Mg# (=100×Mg/(Mg+Fe)), and are thought to be generated by hydrous mantle melting (Kushiro, 1969). HMA, including sanukitoids of the Setouchi volcanic belt, have been recognized in many orogenic belts of various ages,...