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Sarigan

Estratovolcán · United States · 494 m

The 3-km-wide Sarigan volcano is seen here from the E during a 2003 NOAA expedition to the Marianas Islands.The cone has a 750-m-wide summit crater that forms the flat area to the right and it contains a small cone. More recent eruptions produced two lava domes from vents on and near the S crater rim, forming the island's high point at the left part of the summit. Holocene lava flows from the dome complex formed the peninsula to the far left.
The 3-km-wide Sarigan volcano is seen here from the E during a 2003 NOAA expedition to the Marianas Islands.The cone has a 750-m-wide summit crater that forms the flat area to the right and it contains a small cone. More recent eruptions produced two lava domes from vents on and near the S crater rim, forming the island's high point at the left part of the summit. Holocene lava flows from the dome complex formed the peninsula to the far left. · Foto: Image courtesy of NOAA, 2003 (http://oceanexplorer.noaa.gov/explorations/03fire/). · Wikimedia Commons
Tipo
Estratovolcán
País
United States
Región
Northwestern Pacific Volcanic Regions / Mariana Volcanic Arc
Altitud
494 m
Coordenadas
16.699, 145.780
Última erupción
Desconocido
Contexto tectónico
Subduction zone / Crustal thickness unknown
Forma volcánica
Composite
Roca principal
Andesite / Basaltic Andesite
Resumen geológico

Sarigan volcano forms an irregular 3-km-long island consisting of a low truncated cone with a 750-m-wide summit crater that contains a small ash cone. The most recent eruptions produced two lava domes from vents above and near the south crater rim. Lava flows from each dome reached the coast and extended out to sea. The northern flow overtopped the crater rim on the N and NW sides. The sparse vegetation on the flows indicated to Meijer and Reagan (1981) that they are of Holocene age.

Resumen de Wikipedia

Resumen en inglés

Sarigan or Sariguan is an uninhabited volcanic island in the Pacific Ocean. It is part of the Northern Mariana Islands, a U.S. territory. Sarigan is located 37 kilometers (20 nmi) northeast of Anatahan island, 67 km (36 nmi) south of Guguan and 150 km (81 nmi) north of Saipan, the largest island in the Northern Marianas. The island has been sparsely populated, but in modern times has been uninhabited due to volcanic activity. It is currently a nature preserve.

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