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Seamount X

Stratovolcano · United States · 1230m (submarine)

A bathymetric map showing Seamount X was produced using data from 2004 and 2006 NOAA submarine vents expeditions. The seamount lies about 70 km WSW of Guam and displays areas of hydrothermal venting. The contour interval is 200 m.
A bathymetric map showing Seamount X was produced using data from 2004 and 2006 NOAA submarine vents expeditions. The seamount lies about 70 km WSW of Guam and displays areas of hydrothermal venting. The contour interval is 200 m. · Photo: Image courtesy of Susan Merle (Oregon State University/NOAA Vents Program).
Type
Stratovolcano
Country
United States
Region
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
Elevation
1230m (submarine)
Coordinates
13.250, 144.020
Last eruption
Unknown
Tectonic setting
Subduction zone / Crustal thickness unknown
Landform
Composite
Major rock type
Basalt / Picro-Basalt
Geological summary

Hydrothermal activity was detected during a 2003 NOAA expedition at a submarine volcano about 70 km WSW of Guam. The summit of the volcano, referred to as Seamount X, lies 1,230 m below the ocean surface. Diffuse sites of thermal venting colonized by shrimps, crabs, and scaleworms were detected near the summit during a 2006 NOAA expedition, and thick deposits of sulfur flows originating from the hydrothermal vent were observed that were covered with thousands of squat lobsters. Basaltic rocks were recovered along with sulfur samples. The summit of the volcano is cut by an elongated caldera.

Eruption history

Detailed timeline

No eruption records available.

External links

⚠ For reference only. Not for emergency response.