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Katja Deckart,Estanislao Godoy,Alfredo Bertens,Ayesha Saeed
Pág. 1 - 31
Four Middle-to-Late Miocene barren plutonic complexes that occur between the giant porphyry copper deposits of the central Chilean Andes were selected for U-Pb LA-ICPMS geochronology and Hf-isotope systematics on single zircon grains. Major and trace ele...
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Victor Maksaev,Francisco Munizaga,Victor Valencia,Fernando Barra
Pág. 264 - 287
New U-Pb zircon dating of volcanic intercalations in the lower conglomeratic part of the Cerrillos Formation shows that its deposition extended in time at least from 110.7±1.7 to 99.7±1.6 Ma. The significantly younger U-Pb zircon age of 69.5±1.0 Ma obtai...
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Paul Duhart,Michael McDonough,Jorge Munoz,Mark Martin,Michael Villeneuve
Pág. 179 - 208
The Bahía Mansa Metamorphic Complex (BMMC) consists of pelitic schists, metagreywackes, oceanic type mafic metavolcanics, and minor proportion of tectonically emplaced mafic and ultramafic bodies, mylonites to ultramylonites and rare trachytic intrusive ...
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Paulina Gana,Richard M. Tosdal
Pág. 151 - 164
RESUMEN. La geocronologia U-Pb y K-Ar aplicada a rocas intrusivas del batolito de la Costa de Chile Central, permitio comprobar una edad de cristalizacion de 299+/-10 Ma (U-Pb en circon) para el pluton Pomaire de la Unidad Mirasol. Ella esta expuesta al ...
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