Mount Adagdak, Alaska, USA

Adagdak Volcano by unknown

Adagdak Volcano by unknown

Volcano Type:      Stratovolcano
Volcano Status:    Pleistocene-Hot Springs
Last Known Eruption:     Pleistocene
Summit Elevation:     610 m    2,001 feet
Latitude:     51.988°N    51°59’16″N
Longitude:     176.592°W   176°35’30″W

Mount Adagdak is a Pleistocene age stratovolcano on the northernmost extremity of Adak Island in the Aleutian Islands, Alaska. Located about 1,180 miles (1,900 km) from Anchorage, the mountain is located about 1.4 kilometres (0.9 mi) south of Cape Adagdak, for which it was named in 1948 by the United States Geological Survey. Click Here For The Rest Of Mount Adagdak, Alaska, USA

Originally posted 2011-06-08 19:06:23.

San Cristóbal, Nicaragua

San Cristóbal

Volcano Type:      Stratovolcano
Volcano Status:    Historical
Last Known Eruption:     2009
Summit Elevation:     1745 m     5,725 feet
Latitude:     12.702°N     12°42’6″N
Longitude:     87.004°W     87°0’13″W

The San Cristóbal volcanic complex, consisting of five principal volcanic edifices, forms the NW end of the Marrabios Range. The symmetrical 1745-m-high youngest cone, named San Cristóbal (also known as El Viejo), is Nicaragua’s highest volcano and is capped by a 500 x 600 m wide crater. El Chonco, with several flank lava domes, is located 4 km to the west of San Cristóbal; it and the eroded Moyotepe volcano, 4 km to the NE of San Cristóbal, are of Pleistocene age. Volcán Casita, containing an elongated summit crater, lies immediately east of San Cristóbal and was the site of a catastrophic landslide and lahar in 1998. The Plio-Pleistocene La Pelona caldera is located at the eastern end of the San Cristóbal complex. Historical eruptions from San Cristóbal, consisting of small-to-moderate explosive activity, have been reported since the 16th century. Some other 16th-century eruptions attributed to Casita volcano are uncertain and may pertain to other Marrabios Range volcanoes.

Ash column produced by San Cristóbal

Ash column produced by San Cristóbal

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Originally posted 2010-08-26 04:52:30.

Popocatépetl, México

Volcán Popocatépetl

Volcano Type:      Stratovolcanoes
Volcano Status:    Historical
Last Known Eruption:     2010 (continuing)
Summit Elevation:     5426 m     17,802 feet
Latitude:     19.023°N     19°1’24″N
Longitude:     98.622°W     98°37’20″W

Volcán Popocatépetl, whose name is the Aztec word for smoking mountain, towers to 5426 m 70 km SE of Mexico City to form North America’s 2nd-highest volcano. The glacier-clad stratovolcano contains a steep-walled, 400 x 600 m wide crater. The generally symmetrical volcano is modified by the sharp-peaked Ventorrillo on the NW, a remnant of an earlier volcano. At least three previous major cones were destroyed by gravitational failure during the Pleistocene, producing massive debris-avalanche deposits covering broad areas south of the volcano. The modern volcano was constructed to the south of the late-Pleistocene to Holocene El Fraile cone. Three major plinian eruptions, the most recent of which took place about 800 AD, have occurred from Popocatépetl since the mid Holocene, accompanied by pyroclastic flows and voluminous lahars that swept basins below the volcano. Frequent historical eruptions, first recorded in Aztec codices, have occurred since precolumbian time.

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Originally posted 2010-08-07 04:35:32.

Domuyo, Argentina

Volcano Type: Stratovolcano
Volcano Status: Holocene
Last Known Eruption: Unknown
Summit Elevation: 4709 m   15,449 feet
Latitude: 36.58°S   36°35’0″S
Longitude: 70.42°W   70°25’0″W

Volcán Domuyo is a 4709-m-high Argentinian stratovolcano of late-Pleistocene or possibly Holocene age. At least 14 dacitic lava domes and other eruptive centers were constructed within a broad 15-km-wide caldera, and at least another 5 lie outside the caldera. The largest of the latter is Volcán Chanque-Mallín on the ESE flank. It is truncated by a 4-km-wide caldera and contains a resurgent dome.

Originally posted 2010-11-08 04:45:51.