Apoyo Volcano
Updated: 5. Mai 2024 22:15 GMT -
Caldera 600 m / 1969 ft
Nicaragua, 11.92°N / -86.03°W
Aktueller Status: (wahrscheinlich) erloschen (0 von 5)
Nicaragua, 11.92°N / -86.03°W
Aktueller Status: (wahrscheinlich) erloschen (0 von 5)
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Ausbrüche des Apoyo: None during the past 10,000 years
Less than few million years ago (Pleistocene)
Letzte Erdbeben in der Nähe
| Uhrzeit | Mag. / Tiefe | Entfernung / Ort | |||
Beschreibung
The scenic 7-km-wide, lake-filled Apoyo caldera is a large silicic volcanic center immediately SE of Masaya caldera. The surface of Laguna de Apoyo lies only 78 m above sea level; the steep caldera walls rise about 100 m to the eastern rim and up to 500 m to the western rim. An early shield volcano constructed of basaltic-to-andesitic lava flows and small rhyodacitic lava domes collapsed following two major dacitic explosive eruptions. The caldera-forming eruptions have been radiocarbon dated between about 21,000-25,000 years before present. Post-caldera ring-fracture eruptions of uncertain age produced lava flows below the scalloped caldera rim. The slightly arcuate, N-S-trending La Joya fracture system that cuts the eastern flank of the caldera only 2 km east of the caldera rim is a younger regional fissure system structurally unrelated to Apoyo caldera.---
Source: Smithsonian / GVP volcano information
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