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The Northern islands, with the exception of Farallon de
Medinilla, are volcanic. The volcanoes on Pagan and Farralon de Pajaros are currently active,
while the others are dormant. The sites below contain detailed information about the volcanic
history and underlying geology of the Northern Islands.
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| Future Hazards & Risk Study in Planning: The CNMI Government is currently seeking funding to do a detailed hazards and risk study of four volcanic islands –Anatahan, Alamagan, Pagan and Agrigan– to determine if and where the types of facilities envisioned should be built and to maximize safety and minimize risks for people living there. Because of the possibility that eruptions will occur in the future, it is essential that a fail-proof monitoring system be put in place for each inhabited island, should eruption warnings or evacuation ever be needed in t he future. CNMI agencies including the Emergency Management Office will coordinate the U.S. Geological Survey to ascertain the amount of work that needs to be done. |
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General overview and photography of volcanism in the Northern islands Volcano world's general geology of the Mariana Islands Brief overview of individual islands with specifications and histories from Bob Jensen |
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In-depth information about individual islands From the Smithsonian institution, these in-depth pages feature detailed
descriptions, geologic maps, indices of activity, and complete volcanic activity reports.
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