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Cenozoic diatreme field in Chubut (Argentina) as an evidence of phreatomagmatic volcanism accompanied with extensive Patagonian plateau basalt volcanism?
(Int Union Geological Sciences, 2007-09)
In Patagonia, Argentina, at the northern border of the Patagonian mafic Cenozoic plateau lava fields newly discovered diatremes stand about 100 m above the surrounding plane. These diatremes document phreatomagmatic episodes ...
Renewed Explosive Phreatomagmatic Activity at Poás Volcano, Costa Rica in April 2017
(Frontiers in Earth Science, 2018-10-16)
Phreatic and phreatomagmatic eruptions at volcanoes often present no short termprecursory activity, making them a challenge to forecast. Poás volcano, Costa Rica, exhibits cyclic activity with phreatic and some phreatomagmatic ...
Architecture and pyroclastic succession of a small Quaternary (?) maar in the Pali Aike Volcanic Field, Santa Cruz, ArgentinaAufbau und pyroklastische Abfolge eines kleinen quartären (?) Maars im Pali Aike Vulkanfeld, Santa Cruz, Argentinien
(E Schweizerbartsche Verlags, 2006-09)
An approximately 200 m long, 3 m thick continuous outcrop of a near vent crater rim tephra sequence from a young phreatomagmatic volcano of the Pali Aike Volcanic Field (Santa Cruz Province, Argentina) is one of the few ...
Evidence of magma-water interaction during the 13,800 years BP explosive cycle of the Licán Ignimbrite, Villarrica volcano (southern Chile)
(Servicio Nacional de Geología y Minería (SERNAGEOMIN), 2007)
Insights on Hydrothermal‐Magmatic Interactions and Eruptive Processes at Poás Volcano (Costa Rica) From High‐Frequency Gas Monitoring and Drone Measurements
(AGU Publications, 2019-02-06)
Identification of unambiguous signals of volcanic unrest is crucial in hazard assessment. Processes leading to phreatic and phreatomagmatic eruptions remain poorly understood, inhibiting effective eruption forecasting. Our ...
Ubinas: the evolution of the historically most active volcano in southern Peru
(Springer, 2005)
Ubinas volcano has had 23 degassing and ashfall episodes since A.D. 1550, making it the historically most active volcano in southern Peru. Based on fieldwork, on interpretation of aerial photographs and satellite images, ...
Seismic monitoring of 2006 Ubinas volcano eruption
(EGU General Assembly, 2007)
At the end of March 2006, Ubinas volcano (16.355º S, 70.903º W, 5672 m) considered the most active volcano of Peru during the last 450 years begun a new eruption process which is lasting until present. The Geophysical ...
Compositional variations and magma mixing in the 1991 eruptions of Hudson volcano, Chile
(Springer, 2009-12)
The August 1991 eruptions of Hudson volcano produced ∼2.7 km3 (dense rock equivalent, DRE) of basaltic to trachyandesitic pyroclastic deposits, making it one of the largest historical eruptions in South America. Phase 1 ...
Petrographic analysis of the volcanic bombs and blocks from Poás Volcano: april-june 2017 eruptive period
(Universidad de Costa Rica, 2017)
Seismicity during the recent activity (2009–2020) of Turrialba volcano, Costa Rica
(2022)
Turrialba is a stratovolcano located at the easternmost part of the Costa Rican volcanic front. After remaining quiescent for more than a century, in 1996 it started to show signs of unrest, until a first phreatomagmatic ...