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Fanni Vörös, Márton Pál, Benjamin van Wyk de Vries and Balázs Székely
The aesthetic beauty of a landscape is an integral value reflected in artistic inspiration. Science, in contrast, tries to quantify the landscape using various methods. Of these, geodiversity indices have been found to be a useful approach, and this geom...
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Ruben Filipovich,Walter Báez,Emilce Bustos,Agustina Villagrán,Agostina Chiodi,Jose Viramonte
Pág. 300 - 335
One of the most outstanding features of the Southern Puna is the occurrence of a widespread monogenetic mafic volcanism during Neogene-Quaternary. Despite a number of published papers focusing on the petrogenesis of this back-arc volcanism, works aimed o...
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Jorge Eduardo Bustillos A., Jorge Eduardo Romero, Alicia Guevara C., Juan Díaz-Alvarado
Pág. 47 - 77
The Tungurahua volcano (Northern Andean Volcanic Zone) has been erupting since 1999, with at least
four eruptive phases up to present. Although a dozen of research focuses in tephra fall deposits during this period, none
of them cover the full eruptive c...
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Tianzi Dong, Yuling Zhang, Xiaosi Su, Zhiyu Chen and Chaoqun Si
The efficiencies and mechanisms of nitrogen removal from groundwater by scoria were studied. When NH4+-N concentration was 0.5?10 mg/L, the removal was 96?89%. When NO2--N concentration was 0.1?5 mg/L, the removal was 93?85%. When NO3--N concentration wa...
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Álvaro Amigo,Luis E. Lara,Victoria C. Smith
Pág. 227 - 248
Tephra fall deposits and one large ignimbrite close to Chaitén and Michinmahuida Volcanoes were analyzed for chemistry and radiocarbon dated to correlate the eruptive units and establish the timing of eruptions. These data suggest that both volcanoes wer...
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Silke Lohmar,Claude Robin,Alain Gourgaud,Jorge Clavero,Miguel angel Parada,Hugo Moreno,Orkun Ersoy,Leopoldo Lopez-Escobar,Jose Antonio Naranjo
Pág. 233 - 248
Villarrica is an active stratovolcano located in the Southern Andean Volcanic Zone. About 13,800 years BP (conventional radiocarbon ages), this volcano experienced major explosive eruptions which resulted in the emission of a sequence of pyroclastic flow...
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Jorge E. Clavero R.,Stephen J. Sparks,Edmundo Polanco,Malcolm Pringle
Pág. 317 - 348
Parinacota is an active composite stratovolcano located in the Central Andes of Northern Chile (18°S). During its earlier stage (Parinacota 1 unit, Late Pleistocene, 300-70? ka) rhyolitic to andesitic magmas were erupted, forming a voluminous lava-dome c...
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Ricardo Thiele,Hugo Moreno,Sara Elgueta,Alfredo Lahsen,Sofia Rebolledo,M. Eugenia Petit-Breuilh
Pág. 229 - 253
The Quaternary geological history of the uppermost the Río Laja valley shows a complex interrelation between volcanic, mass wasting, and alluvial and fluvial sedimentary processes. The valley was initialiy carved by Lower Pleistocene glacial action on a ...
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Hugo Moreno,Gustavo Fuentealba
Pág. 167 - 171
INTRODUCTION. On May 17, at about 6:00 a.m., the Llaima volcano began a strombolian eruption, 10 years since the last short phreatomagmatic eruption (April 1984). The Llaima volcano is a complex composite-shield volcano, with a buried caldera and 40 para...
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Jose A. Naranjo,Hugo Moreno
Pág. 69 - 80
RESUMEN. El Llaima es uno de los mayores volcanes de los Andes del Sur (37°-46°S) con un area de ca. 500 km2 y un volumen de ca. 400 km3. Es un volcan compuesto, mixto y de escudo con una caldera cubierta y 40 conos adventicios de escoria. Se encuentra a...
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