Volcanic front and zonation of Japan's magma series (Kuno and Sugimura)
Frente volcánico y zonación de las series magmáticas de Japón (Kuno y Sugimura)
- Date
- 1959-1960 · confidence high
- Place
- Tokyo, Japan
- Credited to
- Hisashi Kuno and Akiho Sugimura
- Field
- Cosmos & Earth
What was discovered
Kuno showed in 1959 that the magmas of the Japanese arc change from tholeiitic to calc-alkaline and alkaline with distance from the ocean, and Sugimura defined in 1960 the 'volcanic front', the ocean-side limit of the arc's volcanoes. It prepared the explanation of volcanic activity by subduction.
It was published before plate tectonics, which gave the pattern its meaning. The coordinates indicate the University of Tokyo and not a field location.
What it led to
- relation between subducted slab depth and volcanism
- the volcanic arc model in plate tectonics