Fission Track Age of Volcanoes in the Kuju Volcanic Region in Relation to Geothermal Activity

Koichiro Watanabe, Masao Hayashi, Toshio Fujino

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

In order to clarify the relation between volcanic and geothermal activities in the Hohi geothermal area, fission track ages of the Kuju volcanic rocks, characterized by hornblende andesite, have been measured. The results show that the Kuju volcanism began about 0.3 Ma ago and continued to several tens thousand years ago. The most active Type A geothermal fields are associated with volcanoes younger than 0.20 Ma, the active Type B fields with those from 0.15 to 0.30 Ma in most cases. The volumes of these volcanoes range from 0.3 to 3.2 km3. Larger volcanoes tend to cool down more slowly than smaller ones.

Original languageEnglish
Pages (from-to)207-217
Number of pages11
Journaljournal of the geothermal research society of japan
Volume9
Issue number3
DOIs
Publication statusPublished - Jan 1 1987

All Science Journal Classification (ASJC) codes

  • Geophysics

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