By ExploreNow Editor, on August 24th, 2012%
Volcano Type: Stratovolcano
Volcano Status: Historical
Last Known Eruption: 2010
Summit Elevation: 1730 m 5,676 feet
Latitude: 52.825°N 52°49’30″N
Longitude: 169.944°W 169°56’38″W
Beautifully symmetrical Mount Cleveland stratovolcano is situated at the western end of the uninhabited, dumbbell-shaped Chuginadak Island. It lies SE across Carlisle Pass strait from Carlisle volcano and NE across Chuginadak Pass strait from Herbert volcano. Cleveland is joined to the rest of Chuginadak Island by a low isthmus. The 1730-m-high Mount Cleveland is the highest of the Islands of the Four Mountains group and is one of the most active of the Aleutian Islands. The native name for Mount Cleveland, Chuginadak, refers to the Aleut goddess of fire, who was thought to reside on the volcano. Numerous large lava flows descend the steep-sided flanks of the volcano. It is possible that some 18th-to-19th century eruptions attributed to Carlisle should be ascribed to Cleveland (Miller et al., 1998). In 1944 Cleveland produced the only known fatality from an Aleutian eruption. Recent eruptions from Mount Cleveland have been characterized by short-lived explosive ash emissions, at times accompanied by lava fountaining and lava flows down the flanks.
Click Here For The Rest Of Cleveland, Aleutian Islands, USA
Originally posted 2010-08-21 05:01:01.
By ExploreNow Editor, on August 24th, 2012%
Volcano Type: Stratovolcano?
Volcano Status: Historical
Last Known Eruption: 1992
Summit Elevation: 1654 m 5,426 feet
Latitude: 54.518°N 54°31’6″N
Longitude: 164.65°W 164°39’0″W
Westdahl is a broad, 1654-m-high glacier-covered volcano occupying the SW end of Unimak Island. Two peaks protrude from the summit plateau, and a new crater formed in 1978 cuts the summit icecap. The broad volcano has a somewhat of a shield-like morphology and forms one of the largest volcanoes of the Aleutian Islands. The sharp-topped, conical Pogromni stratovolcano lies 5 km north of Westdahl. Pogromni rises to 2002 m, several hundred meters higher than Westdahl, but is moderately glacially dissected and presumably older. Many satellitic cones of postglacial age are located along a NW-SE line cutting across the summit of Westdahl. Some of the historical eruptions attributed to the eroded Pogromni volcano may have originated instead from Westdahl (Miller et al. 1998). The first historical eruption of Westdahl occurred in 1795. An 8-km-long fissure extending east from the summit of Westdahl produced explosive eruptions and lava flows in 1991.
 Westdahl Volcano Aerial View Click Here For The Rest Of Westdahl, Aleutian Islands, USA
Originally posted 2010-08-21 05:01:34.
By ExploreNow Editor, on August 23rd, 2012%
Volcano Type: Stratovolcano
Volcano Status: Anthropology
Last Known Eruption: Unknown
Summit Elevation: 435 m 1,427 feet
Latitude: 17.87°S 17°52’0″S
Longitude: 148.07°W 148°4’0″W
The 1.5-km-wide, steep-sided island of Mehetia, the youngest and SE-most of the Society Islands, lacks a well-developed fringing coral reef. The 435-m-high island (known as Meetia or Meketia in the Tahitian and Tuamotuan languages, respectively) is the summit of a large volcano that rises 4000 m from the sea floor. An older edifice is formed of a lava flow sequence overlain by hydromagmatic deposits and strombolian ejecta. A well-preserved Holocene crater, 150 m wide and 80 m deep, is located NW of the summit and has been the source of the youngest lava flows on the island (Binard et al., 1993). Polynesian legends mention “large fires,” and the lack of vegetation on some lava flows suggests that the latest activity occurred within the last 2000 years (Talandier and Custer, 1976). Other recent activity at Tehetia originated from a submarine crater at 2500-2700 m depth on the SE flank.
 - Mehetia Island and Volcano
The 1.5-km-wide, steep-sided island of Mehetia, seen here from the south, is the youngest and SE-most of the Society Islands. The 435-m-high island is the summit of a large volcano that rises 4000 m from the sea floor. Wave erosion has truncated lava flows of an older edifice, leaving steep cliffs that overlie coral reefs seen at the peninsula in the left foreground. The summit of the island is formed by a younger edifice that may have been the source of apparent eruptive events mentioned in Polynesian legends.
Originally posted 2010-07-06 16:51:58.
By ExploreNow Editor, on August 21st, 2012%
Volcano Type: Stratovolcano
Volcano Status: Historical
Last Known Eruption: 2010 (continuing)
Summit Elevation: 1536 m 5,039 feet
Latitude: 54.05°N 54°3’0″N
Longitude: 159.45°E 159°27’0″E
Karymsky, the most active volcano of Kamchatka’s eastern volcanic zone, is a symmetrical stratovolcano constructed within a 5-km-wide caldera that formed during the early Holocene. The caldera cuts the south side of the Pleistocene Dvor volcano and is located outside the north margin of the large mid-Pleistocene Polovinka caldera, which contains the smaller Akademia Nauk and Odnoboky calderas. Most seismicity preceding Karymsky eruptions originated beneath Akademia Nauk caldera, which is located immediately south of Karymsky volcano. The caldera enclosing Karymsky volcano formed about 7600-7700 radiocarbon years ago; construction of the Karymsky stratovolcano began about 2000 years later. The latest eruptive period began about 500 years ago, following a 2300-year quiescence. Much of the cone is mantled by lava flows less than 200 years old. Historical eruptions have been vulcanian or vulcanian-strombolian with moderate explosive activity and occasional lava flows from the summit crater.
Click Here For The Rest Of Karymsky, Russia
Originally posted 2010-08-31 04:39:54.
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