Report on Carran-Los Venados (Chile) — May 1979
Scientific Event Alert Network Bulletin, vol. 4, no. 5 (May 1979)
Managing Editor: David Squires.
Carran-Los Venados (Chile) Eruption resumes
Please cite this report as:
Global Volcanism Program, 1979. Report on Carran-Los Venados (Chile) (Squires, D., ed.). Scientific Event Alert Network Bulletin, 4:5. Smithsonian Institution. https://doi.org/10.5479/si.GVP.SEAN197905-357140
40.35°S, 72.07°W; summit elev. 1114 m
All times are local (unless otherwise noted)
Local authorities report that the eruption of Mirador crater resumed on 12 May (figure 15-17) [see also 4:7] and was continuing 24 hours later. Incandescent material rose 30 m above the vent and a series of low-intensity tremors occurred. Subterranean rumbling, followed by several hours of earthquakes, was reported from Río Buenos, about 40 km away. Carrán's vigorous mid-April eruption had stopped after a few days.
Geological Summary. The Carrán-Los Venados volcano group includes about 50 basaltic to basaltic-andesite scoria cones, maars, and a small stratovolcano that are broadly aligned along a 17-km-long ENE-WSW trend ESE of Lago Ranco. The volcanic features occupy a low-lying area N of the more topographically prominent Puyehue-Cordón Caulle volcanic chain, and many of the vents are postglacial in age. The Mirador scoria cone and two maars, Riñinahue and Carrán, were formed during eruptions in the 20th century. These historical eruptions were concentrated where the regional Liquine-Ofqui fault zone intersects the alignment of volcanic vents.
Information Contacts: Latin Radio Network, Buenos Aires, Argentina.