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Guguan, Mariana Islands (68 words) |
 | 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. |
| Global Volcanism Program | Guguan | Summary (140 words) |
| The small island of Guguan, only 2.8 km wide, is composed of an eroded volcano on the south, a caldera with a post-caldera cone, and a northern volcano. |
| Freycinet misidentifed Guguan with Alamagan; reported eruptions in 1819 and 1901 (Catalog of Active Volcanoes of the World) actually refer to solfataric activity on Alamagan (Corwin, 1971). |
| The only known historical eruption of Guguan took place between 1882 and 1884 and produced the northern volcano and lava flows that reached the coast. |
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