File:Volcanoes near Usulután, El Salvador.jpg
Summary
This astronaut photograph includes four <a href="//commons.wikimedia.org/wiki/Stratovolcano" title="Stratovolcano">stratovolcanoes</a>—a type of <a href="//commons.wikimedia.org/wiki/Volcano" title="Volcano">volcano</a> common in active subduction zones—in <a href="//commons.wikimedia.org/wiki/El_Salvador" title="El Salvador">El Salvador</a>, near the midpoint of the Central American Volcanic Arc. While all of the volcanoes shown here have been active during the <a href="//commons.wikimedia.org/wiki/Category:Holocene" title="Category:Holocene">Holocene</a> Epoch (from about 10,000 years ago to the present), only the 2,130-meter high San Miguel (also known as Chaparrastique) has been active during historical times. The most recent activity of San Miguel was a minor gas and ash emission in 2013. The stratovolcano’s steep cone shape and well-developed summit crater are evident, along with dark <a href="//commons.wikimedia.org/wiki/Lava" title="Lava">lava</a> flows. Immediately to the north-west, the truncated summit of <a href="//commons.wikimedia.org/wiki/Category:Chinameca" title="Category:Chinameca">Chinameca Volcano</a> (also known as El Pacayal) is marked by a two-kilometre wide <a href="//commons.wikimedia.org/wiki/Caldera" title="Caldera">caldera</a>. The caldera formed when a powerful eruption emptied the volcano’s magma chamber, causing the chamber’s roof to collapse. Like its neighbour San Miguel, Chinameca’s slopes host <a href="//commons.wikimedia.org/wiki/Coffee" title="Coffee">coffee</a> plantations. Moving to the west, the eroded cone of El Tigre Volcano is visible. El Tigre formed during the <a href="//commons.wikimedia.org/wiki/Category:Pleistocene" title="Category:Pleistocene">Pleistocene</a> Epoch (1.8 million to about 10,000 years ago), and it is likely the oldest of the stratovolcanoes in the image. Usulután Volcano is directly south-west of El Tigre. While the flanks of Usulután have been dissected by streams, the <a href="//commons.wikimedia.org/wiki/Mountain" class="mw-redirect" title="Mountain">mountain</a> still retains a summit crater that is breached on the eastern side. Several urban areas—recognizable as light <a href="//commons.wikimedia.org/wiki/Category:Gray" title="Category:Gray">grey</a> to <a href="//commons.wikimedia.org/wiki/Category:White" title="Category:White">white</a> regions contrasting with <a href="//commons.wikimedia.org/wiki/Green" title="Green">green</a> vegetation and tan fallow <a href="//commons.wikimedia.org/wiki/Agriculture" title="Agriculture">agricultural</a> <a href="//commons.wikimedia.org/wiki/Field" title="Field">fields</a>—are located in the vicinity of these volcanoes, including the town of Usulután (lower left) and Santiago de Mara (upper left).
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 16:50, 14 January 2017 | | 4,037 × 3,525 (6.59 MB) | 127.0.0.1 (talk) | This astronaut photograph includes four <a href="//commons.wikimedia.org/wiki/Stratovolcano" title="Stratovolcano">stratovolcanoes</a>—a type of <a href="//commons.wikimedia.org/wiki/Volcano" title="Volcano">volcano</a> common in active subduction zones—in <a href="//commons.wikimedia.org/wiki/El_Salvador" title="El Salvador">El Salvador</a>, near the midpoint of the Central American Volcanic Arc. While all of the volcanoes shown here have been active during the <a href="//commons.wikimedia.org/wiki/Category:Holocene" title="Category:Holocene">Holocene</a> Epoch (from about 10,000 years ago to the present), only the 2,130-meter high San Miguel (also known as Chaparrastique) has been active during historical times. The most recent activity of San Miguel was a minor gas and ash emission in 2013. The stratovolcano’s steep cone shape and well-developed summit crater are evident, along with dark <a href="//commons.wikimedia.org/wiki/Lava" title="Lava">lava</a> flows. Immediately to the north-west, the truncated summit of <a href="//commons.wikimedia.org/wiki/Category:Chinameca" title="Category:Chinameca">Chinameca Volcano</a> (also known as El Pacayal) is marked by a two-kilometre wide <a href="//commons.wikimedia.org/wiki/Caldera" title="Caldera">caldera</a>. The caldera formed when a powerful eruption emptied the volcano’s magma chamber, causing the chamber’s roof to collapse. Like its neighbour San Miguel, Chinameca’s slopes host <a href="//commons.wikimedia.org/wiki/Coffee" title="Coffee">coffee</a> plantations. Moving to the west, the eroded cone of El Tigre Volcano is visible. El Tigre formed during the <a href="//commons.wikimedia.org/wiki/Category:Pleistocene" title="Category:Pleistocene">Pleistocene</a> Epoch (1.8 million to about 10,000 years ago), and it is likely the oldest of the stratovolcanoes in the image. Usulután Volcano is directly south-west of El Tigre. While the flanks of Usulután have been dissected by streams, the <a href="//commons.wikimedia.org/wiki/Mountain" class="mw-redirect" title="Mountain">mountain</a> still retains a summit crater that is breached on the eastern side. Several urban areas—recognizable as light <a href="//commons.wikimedia.org/wiki/Category:Gray" title="Category:Gray">grey</a> to <a href="//commons.wikimedia.org/wiki/Category:White" title="Category:White">white</a> regions contrasting with <a href="//commons.wikimedia.org/wiki/Green" title="Green">green</a> vegetation and tan fallow <a href="//commons.wikimedia.org/wiki/Agriculture" title="Agriculture">agricultural</a> <a href="//commons.wikimedia.org/wiki/Field" title="Field">fields</a>—are located in the vicinity of these volcanoes, including the town of Usulután (lower left) and Santiago de Mara (upper left). |
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