Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 31.771°N
  • 130.592°E

  • 40 m
    131 ft

  • 282081
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Yonemaru-Sumiyoshiike.

The Global Volcanism Program has no Weekly Reports available for Yonemaru-Sumiyoshiike.

The Global Volcanism Program has no Bulletin Reports available for Yonemaru-Sumiyoshiike.

Eruptive History

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
6200 BCE (?) Unknown Confirmed 3 Tephrochronology Yonemaru
6250 BCE (?) Unknown Confirmed 2 Tephrochronology Sumiyoshi-ike

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.

Photo Gallery

Sumiyoshi-ike maar provides a backdrop to a campground on the south side of the lake. The 500-m-wide maar was created about 7000 years ago. Sumiyoshi-ike and Yonemaru are two maars that formed in coastal lowland deposits north of the Aira caldera during a period of rising sea level at the beginning of the Holocene. The larger, 1.2-km-wide Yonemaru maar erupted about 2 km west of Sumiyoshi-ike about 6500 years ago.

Copyrighted photo by Yoshihisa Kawanabe (Japanese Quaternary Volcanoes database, RIODB, http://riodb02.ibase.aist.go.jp/strata/VOL_JP/EN/index.htm and Geol Surv Japan, AIST, http://www.gsj.jp/).
See title for photo information.

Smithsonian Sample Collections Database

There are no samples for Yonemaru-Sumiyoshiike in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites