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Clara Eugenia Cisterna, Magdalena Koukharsky, Beatriz Coira, Christina Günter, Horstpeter H. Ulbrich
Pág. 123 - 146
This study is focused on the analysis of volcanic deposits that crop out at the middle portion of the Las
Planchadas range, northern part of the Famatina System in Argentina. These volcanic rocks are records of an Ordovician
effusive basaltic volcanism t...
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Beatriz Coira, Clara E. Cisterna, Horstpeter H. Ulbrich, Umberto G. Cordani
Pág. 105 - 126
The Las Lozas volcanic sequence, which crops out at northwestern border of the Famatina belt-southeastern
Puna, NW Argentina, is constituted mainly by rhyolites and a lesser volume of basalts and trachytes, and volcanoclastic
deposits. These rocks, previ...
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Mario Vergara,Diego Morata,Rosemary Hickey-Vargas,Leopoldo Lopez-Escobar,Ingrid Beccar
Pág. 23 - 41
Upper Eocene to Middle Miocene volcanic rocks are found in the Colbún area, Linares Precordillera, central Chile (35º35'-36ºS). Based on stratigraphic characteristics, K-Ar and Ar-Ar dating, two different units are recognized: 1-a Lower Unit (Upper Eocen...
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Rita De la Cruz,Manuel Suarez
Pág. 3 - 24
RESUMEN. Durante el Jurasico, en el sector occidental de la cuenca de Neuquen (region de Lonquimay, Chile, entre los paralelos 38 y 39°S), se acumularon depositos sedimentarios marinos y volcanicos marinos y subaereos. Estos constituyen la Formacion Naci...
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