Apoyo volcano

Caldera 600 m / 1969 ft
Nicaragua, 11.92°N / -86.03°W
Current status: (probably) extinct (0 out of 5)

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Typical eruption style: unspecified
Apoyo volcano eruptions: None during the past 10,000 years
Less than few million years ago (Pleistocene)

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Monday, September 13, 2021 23:18 GMT (1 earthquake)
Sep 13, 2021 5:18 pm (GMT -6) (Sep 13, 2021 23:18 GMT)
2.5

35 km
19 km (12 mi)
Departamento de Carazo, 16 km southwest of Masaya, Nicaragua
Sunday, September 12, 2021 11:21 GMT (2 earthquakes)
Sep 12, 2021 5:21 am (GMT -6) (Sep 12, 2021 11:21 GMT)
1.9

8 km
6.3 km (3.9 mi)
2.9 km southeast of Masaya, Nicaragua
Sep 11, 2021 6:48 pm (GMT -6) (Sep 12, 2021 00:48 GMT)
2.8

170 km
46 km (29 mi)
Departamento de Carazo, 46 km southwest of Masaya, Nicaragua
Saturday, September 11, 2021 06:47 GMT (1 earthquake)
Sep 11, 2021 12:47 am (GMT -6) (Sep 11, 2021 06:47 GMT)
2.1

142 km
50 km (31 mi)
24 km west of Managua, Nicaragua
Monday, September 6, 2021 21:17 GMT (1 earthquake)
Sep 6, 2021 3:17 pm (GMT -6) (Sep 6, 2021 21:17 GMT)
3.0

24 km
49 km (30 mi)
16 km northwest of Managua, Nicaragua

Background

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.
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Source: Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8
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