Isabel, Isla

sopka (bez známé erupce za posledních ~12 000 let), Mexico, North America Volcanic Regions

Kde

Mexico, North America Volcanic Regions

Typ (GVP)

Tuff cone(s)

Nadmořská výška

95 m

Poloha

21,848°, -105,886°

Isla Isabel, a complex of tuff cones and associated lava flows, forms a small 1.5-km-long island located in the Pacific Ocean 30 km off the coast of Narayit state, NW of the city of Tepic, Mexico. Despite its apparent location at the western end of the Mexican Volcanic Belt, the island consists of alkaline basaltic rocks and tephra similar to those of other Mexican island volcanoes and in the extensional province of northern Mexico. The island is a wildlife sanctuary whose rocks and vegetation are covered with guano. Exposures of tuff cone interiors can be found in sea cliffs of the main island and offshore islets. The age of the most recent eruptive activity is not known, but morphology and a negative Argon-Argon age from one sample suggests activity may have continued into the Holocene. One unvegetated lava flow of unknown age is located on the NW side of the island.

Text: Smithsonian Global Volcanism Program.

Údaje o sopce: Smithsonian Global Volcanism Program. Další sopky a průduchy.