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Cerro Negro de Mayasquer volcano

Updated: May 30, 2023 15:37 GMT -
stratovolcano 4445 m / 14,583 ft
Colombia, 0.83°N / -77.96°W
Current status: restless (2 out of 5)
Last update: 15 Mar 2023 (Smithsonian / USGS Weekly Volcanic Activity Report)

Cerro Negro de Mayasquer (Chiles-Cerro Negro volcano) is an andesitic to dacitic stratovolcano on the Colombia-Ecuador border. It contains a caldera open to the west.
An historical eruption reported in 1936 is probably false and may have been from Reventador volcano. Solfataras are found on the shore of a small crater lake.

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Typical eruption style: explosive
Cerro Negro de Mayasquer volcano eruptions: 1936(?)

Latest nearby earthquakes

TimeMag. / DepthDistance/Location
Saturday, May 27, 2023 GMT (1 quake)
May 27, 2023 8:04 am (GMT -5) (May 27, 2023 13:04 GMT)

4.2 km
5 km (3.1 mi)
Departamento de Nariño, Colombia, 24 km west of Tulcan, Ecuador
Thursday, May 25, 2023 GMT (2 quakes)
May 25, 2023 2:23 am (GMT -5) (May 25, 2023 07:23 GMT)

4.9 km
5.1 km (3.2 mi)
Departamento de Nariño, Colombia, 24 km west of Tulcan, Ecuador
May 25, 2023 2:20 am (GMT -5) (May 25, 2023 07:20 GMT)

4.6 km
5.2 km (3.2 mi)
Departamento de Nariño, Colombia, 23 km west of Tulcan, Ecuador
Thursday, May 18, 2023 GMT (2 quakes)
May 17, 2023 10:58 pm (GMT -5) (May 18, 2023 03:58 GMT)

4 km
4.8 km (3 mi)
47 km west of Tulcan, Provincia del Carchi, Ecuador
May 17, 2023 10:58 pm (GMT -5) (May 18, 2023 03:58 GMT)

4 km
4.8 km (3 mi)
47 km west of Tulcan, Provincia del Carchi, Ecuador


The higher and glacier-covered summit of the extinct Chiles stratovolcano lies only 3 km to the SE. Chiles last erupted about 160,000 years ago, but still has hot springs and an active hydrothermal system at its eastern flank.

See also: Sentinel hub | Landsat 8 | NASA FIRMS
Wed, 15 Mar 2023, 15:00

Chiles-Cerro Negro volcano (Colombia-Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 8 March-14 March 2023 (Continuing Activity)

A seismic swarm at the Cerro Negro de Mayasquer and Chiles volcanoes, called the Chiles-Cerro Negro volcanic complex (CCNVC), began on 9 March according to the Instituto Geofísico de la Escuela Politécnica Nacional (IGEPN) and the Observatorio Vulcanológico de Pasto (OVP-Colombia). A noted increase in the intensity of seismic signals occurred at 0430 and was followed by an increase in the number of volcano-tectonic events (indicating fracturing rock) at 0900. By 1630, there were around 2,200 earthquakes recorded by the seismic network, and 520 of those events had epicenters located within 2.5 km S of Chiles at depths of 1-6 km below the summit (4,700 m elevation). ... Read all
Mon, 13 Mar 2023, 04:01

Cerro Negro de Mayasquer volcano (Colombia-Ecuador): seismic swarm, earthquake M 3.4

The distribution of swarms detected on 9 March (image: IGEPN)
A swarm of earthquakes started to occur beneath the Chiles-Cerro Negro volcanic complex on 9 March at 11:00 local time, the Red de Sísmica Nacional (RENSIG) and Observatorio Vulcanológico de Pasto (OVP-Colombia) reported. ... Read all
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