Report on Purace (Colombia) — 15 November-21 November 2023
Smithsonian Institution / US Geological Survey
Weekly Volcanic Activity Report, 15 November-21 November 2023
Managing Editor: Sally Sennert.
Please cite this report as:
Global Volcanism Program, 2023. Report on Purace (Colombia) (Sennert, S, ed.). Weekly Volcanic Activity Report, 15 November-21 November 2023. Smithsonian Institution and US Geological Survey.
Purace
Colombia
2.3095°N, 76.3948°W; summit elev. 4650 m
All times are local (unless otherwise noted)
Observatorio Vulcanológico y Sismológico de Popayán, Servicio Geologico Colombiano (SGC) reported that at 1929 on 16 November the seismic network recorded a signal at Puracé possibly associated with an ash-and-gas emission. An emission was not confirmed in webcam images due to darkness. The Alert Level remained at Yellow (the second lowest on a four-color scale).
Geological Summary. Puracé is an active andesitic volcano with a 600-m-diameter summit crater at the NW end of the Los Coconucos Volcanic Chain. This volcanic complex includes nine composite and five monogenetic volcanoes, extending from the Puracé crater more than 6 km SE to the summit of Pan de Azúcar stratovolcano. The dacitic massif which the complex is built on extends about 13 km NW-SE and 10 km NE-SW. Frequent small to moderate explosive eruptions reported since 1816 CE have modified the morphology of the summit crater, with the largest eruptions in 1849, 1869, and 1885.
