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Diaporama
Machin volcano and its lava dome (image: @sgcol/twitter)
mercredi, mai 13, 2020
The Servicio Geológico Colombiano (SGC) recorded that the seismic activity continues at elevated levels. Most seismic activity has been associated with rock fracturing. ... [details]
samedi, janv. 05, 2019
No significant changes have occurred at the volcano recently. The Colombian Geological Service maintains yellow alert level as seismic activity under the volcano continues to be elevated. ... [details]
 

Machin volcan éruptions

stratovolcan 2650+ m / 8,694 ft
Colombie, 4.48°N / -75.39°W
Liste des éruptions: 1180 ± 150, 2100 BC ± 200, 2240 BC ± 300, 3800 BC ± 150


2011 unrest
The number of earthquakes increased at Machin volcano on 31 December 2010. Over the next 4 days, 367 volcano-tectonic earthquakes were recorded south and southwest of the main lava dome in the summit caldera.
The largest event occurred at 5:22 pm on 1 January 2011, with a magnitude 2.3 at a depth of 3.3 km. The earthquake was felt by residents in vicinity of the volcano and in the town of Cajamarca (Tolima).
(USGS / GVP weekly reports)

2008 seismic unrest
An earthquake swarm occurred at Machín volcano on 9 November 2008. The increase in earthquakes was accompanied by an increase in fumarolic activity and there was damage to some buildings (USGS / GVP weekly reports).

2004 seismic unrest
In April 2004, a swarm of earthquakes occurred at Machín volcano. More than 60 earthquakes occurred daily, in comparison to the normal number of 1-10 quakes. (USGS/GVP weekly updates)
 

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