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Islas de Hanish

Hanish

Volcán en escudo · Yemen · 422 m

The 20-km-long island of Hanish is seen in this composite NASA Landsat image (with north to the top). Alignment of vents along a prominent NE-SW trend gives the island its elongated shape. Short lava flows reached the coast on both sides of the island, including a very youthful flow prominent on the NW coast. Initial phreatic eruptions were followed by the formation of basaltic tuff and spatter cones that produced fluid lava flows. Suyul Hanish Island lies at the bottom center, and other offshore island lie along the regional NE-SW trend.
The 20-km-long island of Hanish is seen in this composite NASA Landsat image (with north to the top). Alignment of vents along a prominent NE-SW trend gives the island its elongated shape. Short lava flows reached the coast on both sides of the island, including a very youthful flow prominent on the NW coast. Initial phreatic eruptions were followed by the formation of basaltic tuff and spatter cones that produced fluid lava flows. Suyul Hanish Island lies at the bottom center, and other offshore island lie along the regional NE-SW trend. · Foto: NASA Landsat 7 image (worldwind.arc.nasa.gov) · Wikimedia Commons
Tipo
Volcán en escudo
País
Yemen
Región
Eastern Africa Volcanic Regions / Red Sea Rift Volcanic Province
Altitud
422 m
Coordenadas
13.720, 42.730
Última erupción
Desconocido
Contexto tectónico
Rift zone / Oceanic crust (< 15 km)
Forma volcánica
Shield
Roca principal
Basalt / Picro-Basalt
Resumen geológico

The Hanish Islands are formed from a series of volcanic vents along a NE-SW trend, and include the Holocene Great Hanish, Little Hanish, and many other small islands and submarine shoals. The Zukur-Hanish island group lies in shallow waters S of the Red Sea median trough. Spatter cones, cinder cones, and ash cones line the crest of the 20-km-long Great Hanish Island. Short lava flows reach the coast on both sides of the island. Initial eruptions were phreatic, followed by the formation of basaltic cinder cones, spatter cones, and fluid lava flows.

Resumen de Wikipedia

Las islas de Hanish son un conjunto de islas pertenecientes en su mayoría a Yemen, localizadas en el mar Rojo, cerca del estrecho Bab el-Mandeb que comunica con el golfo de Adén.

Wikipedia · CC BY-SA · Leer artículo completo →

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