Unraveling the timing of the Caviahue depression, Andean Southern Volcanic Zone: insights from the sedimentary infill

2020 ◽  
Author(s):  
I. R. Hernando ◽  
J. Bucher ◽  
C. E. del Papa ◽  
J. O. Eisermann ◽  
P. L. Göllner ◽  
...  
Keyword(s):  
Volcanic Zone ◽  
Southern Volcanic Zone ◽  
Andean Southern Volcanic Zone

Crustal xenoliths from Calbuco Volcano, Andean Southern Volcanic Zone: implications for crustal composition and magma-crust interaction

1995 ◽  
Vol 119 (4) ◽  
pp. 331-344
Author(s):  
R. Hickey-Vargas ◽  
Mohammad J. Abdollahi ◽  
Miguel A. Parada ◽  
Leopoldo L�pez-Escobar ◽  
Fred A. Frey
Keyword(s):  
Volcanic Zone ◽  
Crustal Composition ◽  
Southern Volcanic Zone ◽  
Calbuco Volcano ◽  
Crustal Xenoliths ◽  
Andean Southern Volcanic Zone

Crustal xenoliths from Calbuco Volcano, Andean Southern Volcanic Zone: implications for crustal composition and magma-crust interaction

1995 ◽  
Vol 119 (4) ◽  
pp. 331-344 ◽  
Author(s):  
Rosemary Hickey-Vargas ◽  
Mohammad J. Abdollahi ◽  
Miguel A. Parada ◽  
Leopoldo L�pez-Escobar ◽  
Fred A. Frey
Keyword(s):  
Volcanic Zone ◽  
Crustal Composition ◽  
Southern Volcanic Zone ◽  
Calbuco Volcano ◽  
Crustal Xenoliths ◽  
Andean Southern Volcanic Zone

scholarly journals Geology, petrology and geochemistry of the dome complex of Huequi volcano, southern Chile.

2011 ◽  
Vol 38 (2) ◽  
pp. 335 ◽  
Author(s):  
Sebastian F.L. Watt ◽  
David M. Pyle ◽  
Tamsin A. Mather
Keyword(s):  
Basaltic Andesite ◽  
Magma Source ◽  
Explosive Activity ◽  
Southern Chile ◽  
Volcanic Zone ◽  
Eruption Style ◽  
Southern Volcanic Zone ◽  
Lava Domes ◽  
Petrology And Geochemistry ◽  
Andean Southern Volcanic Zone

Huequi, a little-known volcano in the southern part of the Andean southern volcanic zone (SSVZ), shows a regionally unusual eruption style, mineralogy and geochemistry. The volcano comprises multiple highly-eroded lava domes. Past eruptions were accompanied by relatively minor explosive activity, most recently from 1890-1920. The rocks erupted by Huequi range from basaltic andesite to dacite, and are highly distinctive when compared to other volcanoes of the SSVZ, being K-poor and Al-rich, and containing euhedral hornblende phenocrysts. Overall compositions suggest a notably water-rich magma source, evolving through high levels of fractionation and subsequent degassing to produce highly porphyritic dome-forming andesites. The ultimate causes of water-rich magmas at this point in the arc remain unclear.

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