Synonyms: Sacabaya
Location: 18º37'S; 68º45'W
Type: Explosive Silicic Center
Summit Elevation: 4215 m
Edifice Height: 265 m

Volcano Image

Cerro Quemado is unusual in that it is located well to the east of the main volcanic cordillera, on the flat altiplano of Bolivia. Greeley et al. (1987) made a reconnaissance visit to this volcano during the course of studies on the applications of imaging radar techniques to aeolian deposits. Elliptical in plan, the volcano has a maximum basal diameter of ~6.5 km and an edifice height of some 350 m (Figure M3 a&b). The summit vent area is about 2 x 3.5 km and is a series of coalesced craters with the youngest in the south. The slope of the inner crater walls, which appear to be made up of bedded pyroclastic material, range from ~35° to near vertical. A prominent blocky dome is located in the southernmost and youngest crater and appears to have been the last eruptive product. Cerro Quemado was undoubtedly the result of a major pyroclastic eruption as evidenced by the semi-continous apron of tephra distributed up to 7 km from the volcano. The nature of the eruption is unknown but the morphology of the crater suggests a phreatomagmatic eruption. Tephra derived from Cerro Quemado may form a significant component of prominent aeolian dunes observed on the altiplano south and east of the volcano.


Christensen, P.R., and Greeley, R., 1985. A Silicic Shield Volcano in Bolivia. Planetary Geology and Geophysics Program Report, 275.

Greeley, R., Christensen, P.R., & McHone, J.F., 1987. Radar characteristics of small craters - Implications for Venus. Earth, Moon, and Planets, 37:89-111.