Ayarza volcano

Updated: Aug 12, 2022 18:24 GMT - Refresh
Caldera(s) 1409 m / 4623 ft
Guatemala, 14.42°N / -90.12°W
Current status: (probably) extinct (0 out of 5)

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Typical eruption style: unspecified
Ayarza volcano eruptions: None during the past 10,000 years
Less than few million years ago (Pleistocene)
Lastest nearby earthquakes:
TimeMag. / DepthDistance/Location
Tuesday, August 9, 2022 GMT (1 quake)
Aug 8, 2022 10:46 pm (GMT -6) (Aug 9, 2022 04:46 GMT)
4.3

60 km
278 km (173 mi)
0.1 km west of Quetzaltenango, Guatemala
Monday, August 1, 2022 GMT (2 quakes)
Aug 1, 2022 11:09 am (GMT -6) (Aug 1, 2022 17:09 GMT)
3.9

12 km
260 km (162 mi)
North Pacific Ocean, 95 km southwest of Coatepec, Quetzaltenango, Guatemala
Aug 1, 2022 6:01 am (GMT -6) (Aug 1, 2022 12:01 GMT)
4.2

22 km
446 km (277 mi)
North Pacific Ocean, 158 km southwest of Pijijiapan, Chiapas, Mexico
Saturday, July 30, 2022 GMT (1 quake)
Jul 30, 2022 3:29 am (GMT -6) (Jul 30, 2022 09:29 GMT)
3.9

15 km
276 km (171 mi)
North Pacific Ocean, Guatemala, 69 km southwest of Brisas Barra de Suchiate, Mexico

Background

Ayarza is a double caldera that lies about 40 km NE of the active Guatemalan volcanic front. The 5 x 7 km wide figure-8-shaped caldera is filled by the scenic Laguna de Ayarza, which is about 4 km wide in the western caldera and 2 km wide in the eastern caldera. Both calderas, whose steep walls rise nearly 600 m above the lake surface, were formed within several thousand years of each other during major rhyolitic explosive eruptions in the late Pleistocene. The older eastern caldera was associated with eruption of the Mixta pumice fall and ashflow, which were radiocarbon dated at about 27,000 +/- 1600 years before present (BP). The larger western caldera was formed during eruption of the Pinos Altos airfall pumice and Tapalapa ashflows radiocarbon dated at 23,100 +/- 500 years BP. Formation of the double caldera appears to be the last volcanic activity at Ayarza; bathymetry of the lake floor does not show evidence for post-caldera eruptions.
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Source: Smithsonian / GVP volcano information


See also: Sentinel hub | Landsat 8 | NASA FIRMS
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