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Report on Farallon de Pajaros (United States) — October 1990

Farallon de Pajaros

Bulletin of the Global Volcanism Network, vol. 15, no. 10 (October 1990)
Managing Editor: Lindsay McClelland.

Farallon de Pajaros (United States) Vigorous fuming

Please cite this report as:

Global Volcanism Program, 1990. Report on Farallon de Pajaros (United States) (McClelland, L., ed.). Bulletin of the Global Volcanism Network, 15:10. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN199010-284140

Farallon de Pajaros

United States

20.546°N, 144.893°E; summit elev. 337 m

All times are local (unless otherwise noted)

"Photographs taken by Civil Defense personnel in early August 1990 from a fixed-wing airplane showed vigorous fuming."

Geological Summary. The small 2-km-wide island of Farallon de Pajaros (also known as Uracas) is the northernmost and most active volcano of the Mariana Islands. Its relatively frequent eruptions dating back to the mid-19th century have caused the andesitic volcano to be referred to as the "Lighthouse of the western Pacific." The symmetrical, sparsely vegetated summit is the central cone within a small caldera cutting an older edifice, remnants of which are seen on the SE and southern sides near the coast. Flank fissures have fed lava flows that form platforms along the coast. Eruptions have been recorded from both summit and flank vents.

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