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21.078  Articles
1 of 2.109 pages  |  10  records  |  more records»
The aim of this study is to constrain the timing of the deglaciation process since the Last Local Glacial Maximum in HualcaHualca volcano and Patapampa Altiplano, located in the Andean Central Volcanic Zone. Nine 36Cl cosmogenic surface exposure dating of... see more

The Mondaca Volcano comprises a thick rhyolitic lava-field and a dome of similar composition, located near the Lontué River Valley headwaters in the northern part of the Southern Andes Volcanic Zone. It reaches a total volume of ~0.85 km3, and it is form... see more

Tephra deposits exposed in road-cuts in both Chile and Argentina between approximately 42°30' to 45°S preserve evidence of four small (VEI <3 and volume <0.15 km3) and seven medium size (VEI = 3-5 and volume between 0.15 to 1 km3), or possibly large... see more

The Tronador Volcanic Group (TVG) is located in the transition between the central and southern segment of the Andean Southern Volcanic Zone (SVZ), »50 km to the east of the current volcanic front. The TVG includes, from older to younger, the deeply erode... see more

ABSTRACT. At the northern end of the Andean Southern Volcanic Zone (NSVZ; 33-34°S), subduction angle decreased and the magmatic arc migrated eastward to its present location along the Andean drainage divide during the Pliocene. Prior to arc migration, the... see more

The Quaternary Nevado de Longaví volcano of the Andean Southern Volcanic Zone (SVZ) has erupted magmas that range in composition from basalt to low-silica dacite, although andesites are the dominant erupted magma type. Amphibole is a common phenocryst pha... see more

ABSTRACT. Between the Pliocene and the Present the volcanic belt from 33-34°S, at the northern end of the Southern Volcanic Zone (SVZ) of the Andes, narrowed into a single chain of volcanoes as the volcanic front migrated 35 km to the east and the boundar... see more

Sediment cores from lakes and bogs in the Río Cisnes valley contain tephra from explosive eruptions of volcanoes in the southern part of the Andean Southern Volcanic Zone (SSVZ). These tephra, which thicken and coarsen to the west, are attributed to erupt... see more

We conducted a lithological mapping of the Viedma volcano, one of five volcanoes in the Andean Austral Volcanic Zone (AVZ), using remote sensing techniques. We used data of the Advanced Spaceborne Thermal Emission and Reflection radiometer (ASTER) sensor ... see more

1 of 2.109 pages  |  10  records  |  more records»