Usulután

Usulutan

Stratovulcano · El Salvador · 1449 m

Usulután rises above the Pacific coastal plain at the SE end of a cluster of volcanoes between San Vicente and San Miguel. Several valleys have formed on the flanks of, including the one seen in this view of the SW flank. The rounded peak to the left is Cerro Oromontique on the flank of El Tigre volcano. · Foto: Photo by Lee Siebert, 1999 (Smithsonian Institution). · Wikimedia Commons

Tipo: Stratovulcano
Paese: El Salvador
Regione: Middle America-Caribbean Volcanic Regions / Central America Volcanic Arc
Altitudine: 1449 m
Coordinate: 13.419, -88.471
Ultima eruzione: Sconosciuto
Contesto tettonico: Subduction zone / Continental crust (> 25 km)
Forma vulcanica: Composite
Roccia principale: Basalt / Picro-Basalt

Sintesi geologica

Usulután volcano anchors the SE end of a cluster of basaltic to basaltic andesite stratovolcanoes between San Vicente and San Miguel volcanoes. The flanks of the forested volcano are dissected, but youthful lava flows are present on its southern flanks. The younger summit rocks of Usulután and the Cerro Nanzal pyroclastic cone on the lower SE flank were mapped as Holocene (Weber and Wiesemann, 1978). A broad 1.3-km-wide crater is breached to the E from the summit to its lower flank.

Sintesi da Wikipedia

Riassunto in inglese

Usulután is a stratovolcano in central El Salvador, rising above the coastal plain between the San Vicente and San Miguel volcanoes, and just east of Taburete volcano. The volcano is topped by a 1.3 kilometres (0.8 mi) wide summit crater which is breached to the east.

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