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Derek J. Weller, María Eugenia de Porras, Antonio Maldonado, César Méndez, Charles R. Stern
Pág. 229 - 248
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 erup...
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Charles Stern, Patricio I. Moreno, William I. Henríquez, Rodrigo Villa-Martínez, Esteban Sagredo, Juan C. Aravena, Ricardo de Pol-Holz
Pág. 1 - 19
Two Holocene tephras encountered in outcrops, cores and trenches in bogs, and lake cores in the area
around Cochrane, southern Chile, are identified (based on their age, tephra glass color and morphology, mineralogy,
and both bulk and glass chemistry) as...
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Charles Stern,María Eugenia de Porras,Antonio Maldonado
Pág. 173 - 189
Based on their petrography and chemistry, 18 tephra analyzed from two lake and bog cores and one outcrop in the upper Río Cisnes valley are believed to have been derived from nine different eruptions of the Mentolat volcano, four of the Melimoyu volcano,...
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Juan-Luis García,Jorge A. Strelin,Rodrigo M. Vega,Brenda L. Hall,Charles R. Stern
Pág. 190 - 212
The late-glacial sedimentologic and geomorphic record of the former Patagonian ice sheet remains mostly unstudied despite the fact that it affords invaluable evidence for glaciologic processes during the last glacial-interglacial transition (i.e., 18-11....
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Charles R. Stern,Ricardo Floody,Domingo Espineira
Pág. 1 - 22
Mafic Mg-olivine (Fo88)+hornblende lamprophyre dikes, with Ni ~190 ppm and Cr ~390 ppm, cut late Miocene lavas in the Quebrada los Sapos a few kilometers west of the El Teniente Cu-Mo mine. These dikes have petrochemical affinities with other less primit...
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Charles R. Stern,Patricio I. Moreno,Rodrigo Villa-Martinez,Esteban A. Sagredo,Alfredo Prieto,Rafael Labarca
Pág. 82 - 97
Newly described outcrops, excavations and sediment cores from the region of Última Esperanza, Magallanes, contain tephra derived from the large late-glacial explosive R1 eruption of the Reclús volcano in the Andean Austral Volcanic Zone. New radiocarbon ...
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Mauricio Mella,Jorge Munoz,Mario Vergara,Erik Klohn,Lang Farmer,Charles R. Stern
Pág. 131 - 154
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 erod...
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Charles R. Stern
Pág. 161 - 206
The Andean volcanic arc includes over 200 potentially active Quaternary volcanoes, and at least 12 giant caldera/ignimbrite systems, occurring in four separate segments referred to as the Northern, Central, Southern and Austral Volcanic Zones. Volcanism ...
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Jose A. Naranjo,Charles R. Stern
Pág. 225 - 240
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 larg...
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Rolf Kilian,Miriam Hohner,Harald Biester,Hans J. Wallrabe-Adams,Charles R. Stern
Pág. 32 - 37
Peat and lake sediment cores from Peninsula Muñoz Gamero in the southernmost Main Andean Cordillera, and also Seno Skyring fjord and Peninsula Brunswick in the Andean foothills, have been investigated to refine the local Holocene tephrochronology. New 14...
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