San Pedro

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

Kde

Mexico, Middle America-Caribbean Volcanic Regions

Typ (GVP)

Caldera

Nadmořská výška

2 000 m

Poloha

21,170°, -104,730°

The elliptical 7 x 10 km wide San Pedro caldera, located immediately south of the Tepetiltic caldera, is partially filled by the three coalescing Cerro San Pedro lava domes. Construction of a large number of lava domes SE of the current location of San Pedro during the Pleistocene was followed by caldera formation associated with eruption of the Cuastecomate Pumice. The rim of the caldera, which was considered to have formed between about 450,000 and 283,000 years ago, is exposed only on the east side. The dacitic San Pedro lava domes are aligned along a WNW-trending fracture and have been potassium-argon dated at about 41,000 years. Two of the domes have collapsed, forming debris-avalanche deposits that extend as far as 10 km to the NW and SE.

Text: Smithsonian Global Volcanism Program.

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