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Guguan

Stratovolcano · United States · 232m

The 2.8-km-wide Guguan island in the central Marianas Islands, seen here from the NW, is composed of an eroded volcano at the south and a caldera with a post-caldera cone. The northern cone (foreground) was the site of an eruption in the 19th century. It has three coalescing cones and a summit crater that produced lava flows to the W and NW.
The 2.8-km-wide Guguan island in the central Marianas Islands, seen here from the NW, is composed of an eroded volcano at the south and a caldera with a post-caldera cone. The northern cone (foreground) was the site of an eruption in the 19th century. It has three coalescing cones and a summit crater that produced lava flows to the W and NW. · Photo: Photo by Richard Moore, 1992 (U.S. Geological Survey). · Wikimedia Commons
Type
Stratovolcano
Country
United States
Region
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
Elevation
232m
Coordinates
17.314, 145.840
Last eruption
1883
Tectonic setting
Subduction zone / Crustal thickness unknown
Landform
Composite
Major rock type
Andesite / Basaltic Andesite
Geological summary

The island of Guguan, ~2.8 km in diameter, is composed of an eroded volcano on the south, a caldera with a post-caldera cone, and a northern volcano. The latter has three coalescing cones and a breached summit crater that fed lava flows to the W and NW. The only known reported eruption, between 1882 and 1884, produced the northern volcano and lava flows that reached the coast. Freycinet (Uranie 1817 Expedition) confused Guguan and Alamagan; reported eruptions in 1819 and 1901 (Kuno, 1962 CAVW) actually refer to solfataric activity on Alamagan (Corwin, 1971).

From Wikipedia

Guguan is an island in the Northern Mariana Islands in the Pacific Ocean. The island is currently uninhabited. Guguan is located 30 nautical miles (56 km) south from Alamagan and 250 nautical miles (463 km) north from Saipan, and is 67 nautical miles (124 km) northeast from Sarigan.

Wikipedia · CC BY-SA · Read full article →

Eruption history

Summary (VEI over time)
Click a bar to see individual eruptions
1883~1883 · 1 eruptions · max VEI 218831883188418841884

Detailed timeline

  1. 1883 (±1 yrs)VEI 2Observed
    1883 – Ongoing

External links

⚠ For reference only. Not for emergency response.