Photo by Dr. P. W. Francis.
The Lascar Volcano is an active andesitic to dacitic stratovolcano that consists of an elongate series of six overlapping craters, trending roughly northeast, with the active, fuming crater located near the center of this cluster. It is about 800 m in diameter and 300 m deep. Grey pumice deposits from the 1993 eruption are visible in the photo above, and the margins of some pyroclastic flows can be seen at right center. Lascar is the most active volcano in the central Andes.
January 6, 2004
On December 9 small amounts of fine ash were emitted from fumaroles and the next day the activity was back to normal levels with only gas and steam emitted.
This information was summarized from the GVP/USGS Weekly Volcanic Activity Report
A major eruption occurred at the Lascar Volcano. The white mushroom eruptive column rose 4000-5000 m high over the summit. 1-2 mm of very fine ash fell in Jama (international boundary of Chile and Argentina).
This information was summarized from Smithsonian Institution's Preliminary Notices of Volcanic Activity.
Sources of Information:
Global Volcanism Network, Smithsonian Institution, Washington, D.C.