Ángel Leopoldo López Escobar (1940-2013)

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A contribution to the petrogenesis of Osomo and Calbuco volcanoes, Southern Andes (41�00'-41�30'S): comparative study

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Leopoldo Lopez-Escobar,Miguel A. Parada,Hugo Moreno,Fred A. Frey,Rosemary L. Hickey-Vargas P�g. 211 - 226

RESUMEN. Contribucion a la petrogenesis de los volcanes Osorno y Calbuco, Andes del Sur (41�00'-41�30'S): estudio comparativo. Los volcanes Osorno y Calbuco, ubicados respectivamente en las latitudes 41�05'S y 41�20'S de la region sur de la Zona Volcani... ver m�s

Revista: Andean Geology

Variaciones geoquimicas, locales y regionales, en el frente volcanico cuaternario de los Andes centrales (17�30'-22�00'S), norte de Chile

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Gerhardt Worner,Leopoldo Lopez-Escobar,Stephen Moorbath,Susan Horn,J�rgen Entenmann,Russel S. Harmon ,Jon D. Davidson P�g. 37 - 56

ABSTRACT. Local and regional geochemical variations in the quaternary volcanic front of the central Andes (17�30'-22�00'S), northern Chile. Geochemical data, obtained in samples from the 17�30'-22�00'S sector of the Quaternary volcanic front of the Centr... ver m�s

Revista: Andean Geology

Uranium-thorium activities and disequilibrium in volcanic rocks from the Andes (33-46�S): petrogenetic constraints and environmental consequences

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Daniel Tormey,Paulina Schuller,Leopoldo Lopez-Escobar,Frederick Frey P�g. 165 - 175

This is a two part study of recent lavas Irom the Southern Volcanic Zone (SVZ) of the Andes (33-46�S). In the first part, radioactive equilibrium between 238U and 230Th was tested by analyzing 9 samples from historic eruptions for 230Th/232Th activity ra... ver m�s

Revista: Andean Geology

�ngel Leopoldo L�pez Escobar (1940-2013)

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