Reventador volcano (Ecuador) - Smithsonian / USGS Weekly Volcanic Activity Report for 15 December-21 December 2004 (Continuing Activity)

On 16 December, a block lava flow from Reventador extended more than 1.5 km from the 2002 crater through a breach in the S portion of the crater wall. The flow front was ~600 m below the central vent and extended to the ESE. Lava extrusion from a vent in the crater likely began in early November, accompanied by a dramatic increase in volcano-tectonic earthquakes.

Source: Instituto Geofísico-Escuela Politécnica Nacional (IG)
---
From: Global Volcanism Program, 2004. Report on Reventador. In: Mayberry, G (ed.), Weekly Volcanic Activity Report 15 December-21 December 2004. Smithsonian Institution and US Geological Survey.