Outline of geology of Kita-Iwo-To Volcano in Volcano Islands, Japan

DOI Web Site 2 Citations 4 References
  • Nakano Shun
    AIST, Geological Survey of Japan, Institute of Geology and Geoinformation
  • Furukawa Ryuta
    AIST, Geological Survey of Japan, Institute of Geology and Geoinformation

Bibliographic Information

Other Title
  • 火山列島，北硫黄島火山の地質概要
  • カザン レットウ キタイオウトウ カザン ノ チシツ ガイヨウ
  • Outline of geology of Kita-Iwo-To volcano in volcano islands

Search this article

Abstract

    Kita-Iwo-To Volcano is a dissected Quaternary stratovolcano with no fumarolic activities, belonging to the Izu-Bonin Arc. It is stratigraphically divided into older and younger volcanoes. The volcano consists wholly of subaerial lava flows, pyroclastics and volcaniclastics. Numerous thin and nearly vertical dikes crop out along the sea cliff and count up to 167. Most of them have radial patterns from the center of the island. All lavas and dikes sampled are basaltic rocks with phenocrysts of plagioclase, olivine and clinopyroxene except one andesite dike. Chemical compositions of basaltic rocks with 47.3-51.2 wt.% SiO2 and an andesite dike with 58.6 wt.% SiO2 belong to the low-K to medium-K series.

Journal

Citations (2)*help

See more

References(4)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top