Asuncion

Photo of this volcano
  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 19.671°N
  • 145.406°E

  • 857 m
    2811 ft

  • 284150
  • Latitude
  • Longitude

  • Summit
    Elevation

  • Volcano
    Number

Most Recent Bulletin Report: June 1992 (BGVN 17:06) Citation IconCite this Report


Strong steaming

A six-member team of USGS volcanologists visited the Commonwealth of the Northern Mariana Islands 11-27 May 1992 at the request of the CNMI Office of Civil Defense. Vigorous steaming was occurring from several locations in the summit crater [of Asuncion] during observations from a helicopter on 18 May.

Information Contacts: R. Moore, USGS; R. Koyanagi, M. Sako, and F. Trusdell, HVO.

The Global Volcanism Program has no Weekly Reports available for Asuncion.

Bulletin Reports - Index


Reports are organized chronologically and indexed below by Month/Year (Publication Volume:Number), and include a one-line summary. Click on the index link or scroll down to read the reports.

6/1992 (BGVN 17:06) Strong steaming




Information is preliminary and subject to change. All times are local (unless otherwise noted)


June 1992 (BGVN 17:06) Citation IconCite this Report


Strong steaming

A six-member team of USGS volcanologists visited the Commonwealth of the Northern Mariana Islands 11-27 May 1992 at the request of the CNMI Office of Civil Defense. Vigorous steaming was occurring from several locations in the summit crater [of Asuncion] during observations from a helicopter on 18 May.

Information Contacts: R. Moore, USGS; R. Koyanagi, M. Sako, and F. Trusdell, HVO.

Eruptive History


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


Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1924 ] [ Unknown ] Uncertain 2  
1906 Unknown Confirmed 2 Historical Observations Upper SE and west flanks
[ 1901 ] [ Unknown ] Discredited    
[ 1819 ] [ Unknown ] Discredited    
[ 1786 ] [ Unknown ] Discredited    
[ 1775 ± 10 years ] [ Unknown ] Uncertain 2  
[ 1690 ± 10 years ] [ Unknown ] Uncertain    

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


An aerial view from the SW shows the unvegetated upper slopes of 857-m-high Asuncion volcano in the northern Mariana Islands. The large asymmetrical stratovolcano forms a circular 3-km-wide island that has had no permanent residents since the late-17th century. An explosive eruption in 1906 produced lava flows that descended about half way down the western and SE flanks, but several other historical eruption reports are of uncertain validity.

Photo by Dick Moore, 1992 (U.S. Geological Survey).
See title for photo information.

Smithsonian Sample Collections Database


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

Affiliated Sites