Socorro Island
| Native name: Isla Socorro | |
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Socorro Island, from satellite image
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| Geography | |
| Location | Pacific Ocean |
| Coordinates | 18°47′04″N 110°58′30″W / 18.78444°N 110.97500°W |
| Archipelago | Revillagigedo Islands |
| Total islands | 4 |
| Major islands | San Benedicto, Socorro, Roca Partida & Clarión |
| Area | 132 km2 (51 sq mi) |
| Length | 16.5 km (10.25 mi) |
| Width | 11.5 km (7.15 mi) |
| Highest elevation | 1,150 m (3,770 ft) |
| Highest point | Mount (Cerro) Evermann |
| Administration | |
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Mexico
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| Demographics | |
| Population | 45 |
| Pop. density | 0.34 /km2 (0.88 /sq mi) |
Coordinates: 18°47′04″N 110°58′30″W / 18.78444°N 110.97500°W Socorro Island (Spanish: Isla Socorro) is a small volcanic island in the Revillagigedo Islands, a Mexican possession lying some 600 kilometers off the country's western coast at 18°48'N, 110°59'W. The size is 16.5 by 11.5 km, with an area of 132 km2. It is the largest of the four islands of the Revillagigedo Archipelago.
The island rises abruptly from the sea to 1,050 meters (3,440 feet) in elevation at its summit. Isla Socorro is a shield volcano.
The island is part of the northern Mathematicians Ridge, a mid-ocean ridge that became largely inactive 3.5 million years ago when activity moved to the East Pacific Rise. All four islands along with the many seamounts on the ridge are post-abandonment alkaline volcanoes. Socorro Island is unusual in that it is the only dominantly silicic peralkaline volcanic island in the Pacific Ocean.
It most recently erupted in late January-early February, 1993, which was a submarine flank eruption off the coast from Punta Tosca. An earlier eruption was on May 21, 1951; earlier eruptions probably occurred in 1905, 1896 and 1848. The initial volcanic event probably occurred in 3090 BC +/- 500 years.Mount Evermann (Spanish: Cerro Evermann) is the name given to the summit dome complex, in honor of ichthyologist Barton Warren Evermann. The island's surface is broken by furrows, small craters, and numerous ravines, and covered in lava domes, lava flows and cinder cones.
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Wikipedia