Las Pilas vulcano

Aggiornato: 9 ago. 2022 10:59 GMT - Refresh
Campo vulcanico 1088 m / 3,570 ft
Nicaragua, 12.5°N / -86.69°W
Stato attuale: normal or dormant (1 di 5)

Las Pilas volcano is a volcanic complex near Cerro Negro volcano 75 km NW of the capital Managua.
The volcano consists of several cones around the central vent, Las Pilas, which contains a 700 m wide and 120 m deep crater and is the site of the recent activity.
El Hoyo is a 150 m deep pit crater immediately SW of the main crater. It contains particularly strong fumaroles and produces sometimes dense plumes of gas and steam.
The only certain historic activity from Las Pilas were 2 phreatic eruptions from a fissure on the eastern side of Las Pilas cone in 1952 and 1954. An eruption in the 16th century is uncertain.

Mostra la mappa interattiva
Stile eruttivo tipico: explosive
Eruzioni del vulcano Las Pilas: 1994 (?), 1954, 1952, 1528 (?)
Lastest nearby earthquakes:
Data / oraMag. / Prof.Distanza/Ubicazione
venerdì, 5 agosto 2022 GMT (1 sismo)
5 ago 2022 14:41 (GMT -6) (5 ago 2022 20:41 GMT)
2.5

185 km
31 km (19 mi)
9.5 km a ovest da Leon, Nicaragua
mercoledì, 3 agosto 2022 GMT (2 sismi)
3 ago 2022 15:55 (GMT -6) (3 ago 2022 21:55 GMT)
5.3

138 km
20 km (12 mi)
23 km a sud-est da Leon, Nicaragua
3 ago 2022 05:48 (GMT -6) (3 ago 2022 11:48 GMT)
2.9

216 km
178 km (111 mi)
55 km a nord est da Juigalpa, Departamento de Chontales, Nicaragua
venerdì, 29 luglio 2022 GMT (1 sismo)
29 lug 2022 07:42 (GMT -6) (29 lug 2022 13:42 GMT)
3.0

5 km
28 km (17 mi)
11 km a nord ovest da Leon, Nicaragua

Sfondo

The 30 km long Las Pilas volcanic complex is built along a N-S-trending fracture system and contains numerous young cones, craters and maars.
The lake-filled Asososca maar is located next to the conical 818-m-high Cerro Asososca cone on the southern side of the fissure system, south of the axis of the Marrabios Range. 2 small maars west of Lake Managua are located at the southern end of the fissure.
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Sources:
- Bice, D.C., 1980, Tephra stratigraphy and physical aspects of recent volcanism near Managua, Nicaragua: Ph.D. Dissertation, Univ of California, Berkeley, 422 p
- Smithsonian / GVP volcano information

1994 possible phreatic eruption
A possible small phreatic eruption could have occurred at Las Pilas volcano in early 1994. A dense white steam plume was visible on 3 March from at least 10 km south of the volcano.
Geologist visiting the area found a new(?) circular, 10 m diameter pit crater on the upper southern slope of the main crater as the source of the plume. The pit had vertical walls covered with sulfur deposits. 50-75 m to the W, another larger circular pit crater measuring about 30-40 m in diameter was observed.
(Source: Smithsonian / GVP monthly reports)

See also: Sentinel hub | Landsat 8 | NASA FIRMS
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