State (Province, etc):
Guguan is a stratovolcano and part of the Marianas volcanic arc . The volcanoes of this arc are related to the subduction of the Pacific Plate beneath the Philippine Plate. A single historic eruption at Guguan in 1883 produced pyroclastic flows and lava flows. Photograph by Norm Banks, U.S. Geological Survey, May, 1981.
Guguan. Photograph by Frank Trusdell, U.S. Geological Survey.
Simkin, T., and Siebert, L., 1994, Volcanoes of the World: Geoscience Press, Tucson, AZ, 349 p.