scholarly journals Tectonic role of margin-parallel and margin-transverse faults during oblique subduction in the Southern Volcanic Zone of the Andes: Insights from Boundary Element Modeling

Tectonics ◽  
2016 ◽  
Vol 35 (9) ◽  
pp. 1990-2013 ◽  
Author(s):  
A. Stanton-Yonge ◽  
W. A. Griffith ◽  
J. Cembrano ◽  
R. St. Julien ◽  
P. Iturrieta
Keyword(s):  
Boundary Element ◽  
Volcanic Zone ◽  
Oblique Subduction ◽  
Element Modeling ◽  
The Andes ◽  
Southern Volcanic Zone

Crustal seismicity associated to rpid surface uplift at Laguna del Maule Volcanic Complex, Southern Volcanic Zone of the Andes

2018 ◽  
Vol 353 ◽  
pp. 83-94 ◽  
Author(s):  
Carlos Cardona ◽  
Andrés Tassara ◽  
Fernando Gil-Cruz ◽  
Luis Lara ◽  
Sergio Morales ◽  
...  
Keyword(s):  
Volcanic Complex ◽  
Volcanic Zone ◽  
Surface Uplift ◽  
The Andes ◽  
Southern Volcanic Zone

Role of crustal and slab components in the Northern Volcanic Zone of the Andes (Ecuador) constrained by Sr–Nd–O isotopes

Lithos ◽  
2012 ◽  
Vol 132-133 ◽  
pp. 180-192 ◽  
Author(s):  
Silvana Hidalgo ◽  
Marie C. Gerbe ◽  
Hervé Martin ◽  
Pablo Samaniego ◽  
Erwan Bourdon
Keyword(s):  
Volcanic Zone ◽  
The Andes ◽  
O Isotopes ◽  
Northern Volcanic Zone

Thermo-mechanical behavior of a granodiorite from the Liquiñe fractured geothermal system (39°S) in the Southern Volcanic Zone of the Andes

Geothermics ◽  
2020 ◽  
Vol 87 ◽  
pp. 101828 ◽  
Author(s):  
J. Sepúlveda ◽  
G. Arancibia ◽  
E. Molina ◽  
J.P. Gilbert ◽  
M. Duda ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Geothermal System ◽  
Volcanic Zone ◽  
The Andes ◽  
Southern Volcanic Zone

scholarly journals Boron and other trace element constraints on the slab-derived component in Quaternary volcanic rocks from the Southern Volcanic Zone of the Andes

2013 ◽  
Vol 47 (2) ◽  
pp. 185-199 ◽  
Author(s):  
HIRONAO SHINJOE ◽  
YUJI ORIHASHI ◽  
JOS^|^Eacute; A. NARANJO ◽  
DAIJI HIRATA ◽  
TOSHIAKI HASENAKA ◽  
...  
Keyword(s):  
Trace Element ◽  
Volcanic Rocks ◽  
Volcanic Zone ◽  
The Andes ◽  
Southern Volcanic Zone

scholarly journals Tectonic controls on geomorphology and spatial distribution of monogenetic volcanoes in the Central Southern Volcanic Zone of the Andes (Argentina)

2021 ◽  
Author(s):  
Fernanda Silva Santos ◽  
Carlos Sommer ◽  
Mauricio Haag ◽  
Walter Báez ◽  
Alberto Caselli ◽  
...  
Keyword(s):  
Structural Control ◽  
Tectonic Setting ◽  
Volcanic Field ◽  
Eruption Dynamics ◽  
Volcanic Zone ◽  
Nazca Plate ◽  
Cinder Cones ◽  
The Andes ◽  
Southern Volcanic Zone ◽  
Monogenetic Volcanoes

Monogenetic volcanoes are among the most common volcanic landforms on Earth. The morphology and distribution of small volcanoes can provide important information about eruption dynamics and tectonics. The Southern Volcanic Zone of the Andes (CSVZ) comprises one of the most active magmatic regions on Earth. Characterized by the presence of polygenetic volcanoes and calderas in a complex tectonic setting, this region also hosts hundreds of small, back-arc monogenetic volcanoes. In this contribution, we apply a Geographic Information System (GIS) that combines imagery data and digital elevation models to establish the first comprehensive dataset of monogenetic volcanoes in the CSVZ (38° to 40° S), exploring their eruption dynamics and relationship to tectonic and structural processes. Combining spatial analysis and geomorphological observations, we identify the presence of 356 monogenetic volcanoes distributed into nine clusters, now grouped in the Zapala Volcanic Field (ZVF). The ZVF is marked by the predominance of cinder cones (80%) followed by phreatomagmatic volcanoes (20%), suggesting some influence of external water in the eruption dynamics. Generally, monogenetic vents present a clear association with local and regional lineaments, suggesting a strong structural control on the occurrence of the monogenetic deposits. The higher vent densities are observed in the southern Loncopué Though, an important extensional feature related to tearing of the subducted Nazca plate underneath the South American Plate. Morphometric parameters of cinder cones indicate variable stress orientations in the CSVZ that possibly result from the oblique tectonics in the region. From north to south, the maximum principal stress rotates from NE-SW to E-W and becomes progressively less constrained as it distances from the current magmatic arc. Based on the relative ages, we map the evolution of monogenetic volcanism through time. Our results suggest a waning in the monogenetic activity in ZVF over time. When compared to monogenetic fields in the Central Andes, the ZVF is marked by higher vent densities and number of phreatomagmatic landforms, with the absence of lava domes. This ultimately reflects the contrasting crustal structure and climate conditions of these two regions.

Role of cryptic amphibole crystallization in magma differentiation at Hudson volcano, Southern Volcanic Zone, Chile

2009 ◽  
Vol 159 (2) ◽  
pp. 237-264 ◽  
Author(s):  
David J. Kratzmann ◽  
Steven Carey ◽  
Roberto A. Scasso ◽  
Jose-Antonio Naranjo
Keyword(s):  
Volcanic Zone ◽  
Magma Differentiation ◽  
Southern Volcanic Zone ◽  
Hudson Volcano

scholarly journals Geochemistry of Nevado de Longaví Volcano (36.2°S): a compositionally atypical arc volcano in the Southern Volcanic Zone of the Andes

2004 ◽  
Vol 31 (2) ◽  
Author(s):  
Daniel Sellés ◽  
A. Carolina Rodríguez ◽  
Michael A. Dungan ◽  
José A. Naranjo ◽  
Moyra Gardeweg
Keyword(s):  
Volcanic Zone ◽  
The Andes ◽  
Southern Volcanic Zone ◽  
Arc Volcano
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