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News:Thursday, Mar 29, 2012
On 20 March patterns of seismicity and emissions from Pacaya's MacKenney cone changed, although remained characteristic of normal behavior for the vol...
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Sunday, Dec 04, 2011
Since July 2010, no eruptive activity has been observed at Pacaya volcano in Guatemala. INSIVUMEH reports that only degassing is taking place from the...
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Pacaya volcanocomplex volcano 2552 m (8,373 ft)
Guatemala, 14.38°N / -90.6°W Current status: restless (2 out of 5) Pacaya webcams / live data
last update: 29 Mar 2012 (some changes in seismic activity detected, degassing)
Typical eruption style: Mildly explosive and effusive (Strombolian activity, lava fountaining, lava flows from the summit crater). Near continuously active the least during the past centuries. Pacaya volcano eruptions: 1360, 1565, 1623(?), 1651, 1655, 1664, 1668, 1671, 1674, 1677(?), 1678, 1690, 1693, 1699, 1717(?), 1760(?), 1775, 1805, 1830(?), 1846, 1885, 1961, 1965, 1970, 2972, 1973, 1976, 1977, 1978, 1980 - May 1998 (intense period of summit activity), 1999-2003, 2004-2010 Pacaya volcano photos Background:Pacaya is a complex basaltic volcano constructed just outside the southern topographic rim of the 14 x 16 km Pleistocene Amatitlán caldera. A cluster of dacitic lava domes occupies the southern caldera floor. The post-caldera Pacaya massif includes the Cerro Grande lava dome and a younger volcano to the SW. Collapse of Pacaya volcano about 1100 years ago produced a debris-avalanche deposit that extends 25 km onto the Pacific coastal plain and left an arcuate somma rim inside which the modern Pacaya volcano (MacKenney cone) grew. A subsidiary crater, Cerro Chino, was constructed on the NW somma rim and was last active in the 19th century.During the past several decades, activity at Pacaya has consisted of frequent strombolian eruptions with intermittent lava flow extrusion that has partially filled in the caldera moat and armored the flanks of MacKenney cone, punctuated by occasional larger explosive eruptions that partially destroy the summit of the cone. Source: GVP Pacaya Photos:
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