Editor invitado: Miguel J. Haller

Published: 2004-12-30

Editorial

En memoria de John Bell Hatcher (1861-1904) y las expediciones de la Universidad de Princeton a la Patagonia de 1896 a 1899

Miguel J. Haller

523-524

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Articles

Cenozoic back-arc magmatism of the southern extra-Andean Patagonia (44° 30' - 52° S): A review of geochemical data and geodynamic interpretations

Massimo D'Orazio, Fabrizio Innocenti, Piero Manettip, Miguel J. Haller

525-538

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Evidences of metasomatism in the sublitospheric mantle of Patagonia

Paola A. Aliani, Ernesto A. Bjerg, Theodoros Ntaflos

539-555

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Magmatic sources, setting and causes of Eocene to Recent Patagonian plateau magmatism (36°S to 52°S latitude)

Suzanne M. Kay, Matthew Gorring, Victor A. Ramos

556-568

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Lithology and structure of the igneous-metamorphic basament of the SW margin of the North Patagonian Massif to the west of Rio Chico (Cushamen, Cubut, 42° 10´S - 70° 30´W)

Raúl Giacosa, Marcelo Márquez, Adriana Nillni, María Fernández, Diego Fracchia, Cayetano Parisi, Juan Afonso, José Paredes, Juan Sciutto

569-577

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Stratigraphy and petrology of the Northeastern sector of Sierra de Apas. Chubut Province

Marcela Remesal, Flavia M. Salani, Gabriela I. Massaferro, María E. Cerredo

578-590

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El Sótano Granodiorite: a deformed Jurassic pluton in the basement of Las Grutas, Atlantic Northpatagonian Massif

Ana M. Sato, Miguel A. S. Basei, Hugo Tickyj, Eduardo J. Llambías, Ricardo Varela

591-600

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Provenance of the Chubut Group Sandstones in the central area of the Sierra de San Bernardo. Preliminary analysis

Maísa A. Tunik, María E Vietto, Juan C. Sciutto, Enrique Estrada

601-606

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Very low grade metamorphism associated with a geothermal system in basic volcanic rocks of the Middle Jurassic, Lonco Trapial Formation, Paso Berwin, Extra-Andean Chubut

P. Montecinos, C. Fuentealba, L. Aguirre, F. Hervé, E. Fonseca , M. J. Haller

607-618

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The Estrechura Andesites from the Middle Rio Chubut Volcanic-Pyroclastic Complex (Paleocene-Middle Eocene)

Eugenio Aragón, Yolanda E. Aguilera, Vanesa C. Consoli, Claudia E. Cavarozzi, Alejandro Ribot

619-633

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The Escuela Piedra Parada Vitrophyric Dome, from the Rio Chubut Medio Volcanic-Pyroclastic Complex

Eugenio Aragón, Pablo D. González, Yolanda Aguilera, Cintia Marquetti, Claudia Cavarozzi, Alejandro Ribot

634-642

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Geology of the Quebrada Honda, basin of Lago La Plata, Chubut

Gabriela V. Depine, Victor A. Ramos

643-654

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ectonic control of the Neocomian volcaniclastic sequences and paleogeography in Lago La Plata region (45°S). Inner sector of the lagos La Plata and Fontana fold and thrust belt

Noelia F. Ionnizzotto, Andrés Folguera, Pablo R. Leal, Diego Iaffa

655-670

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SHRIMP U-Pb zircon dates from igneous rocks from the Fontana Lake region, Patagonia: Implications for the age of magmatism, Mesozoic geological evolution and age of basement

Ariel P. Rolando, Léo A. Hartmann, João O. Santos, Raúl R. Fernández, Ricardo O. Etcheverry, Isidoro A. Schalamuk, Neal J. Mcnaughton

671-684

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Geological characterization of "El Abuelo" skarn deposit, Alto Rio Senguerr, Chubut

Mabel E. Lanfranchini

685-692

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The adakites of the Patagonian Cordillera: new geochemical and geochronological evidences

Victor A. Ramos, Suzanne M. Kay, Bradley S. Singer

693-706

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Age and petrography and geochemistry features of subvolcanic outcrops from Cerro León Formation, east of the Deseado Massif, Santa Cruz

Diego Guido, Mónica Escayola, Raúl de Barrio, Isidoro A. Schalamuk, Artur Takashi Onoe

707-714

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Erosion in the Patagonian coast by climatic change

Roberto R. Kokot

715-726

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Litofacial subdivision and interpretation of the Jurassic volcanism (Bahía Laura Group) in the eastern Deseado Massif, Santa Cruz province

Diego M. Guido

727-742

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The extensive zone of slides on the eastern erosion scarp of Pampa de Salamanca, Chubut

Emilio F. González Díaz

743-762

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Laguna Tordillo Formation: Eocene dacitic volcanism in the Deseado Massif, Santa Cruz province

Diego Guido, Mónica Escayola, Raúl de Barrio, Isidoro A. Schalamuk, Klaus Wemmer

763-770

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Drumlins and drumlinoid forms of the Lower Pleistocene in southern Patagonia, Province of Santa Cruz

Bettina Ercolano, Elizabeth Mazzoni, Mirian Vázquez, Jorge Rabassa

771-777

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Tectonic and paleoenvironmental significance of the Paleogene coal seams of Estancia La Correntina, Fuegian Andes

Eduardo A. Rossello, Eduardo G. Ottone, Claudio E. Haring, Vicente A. Nevistic

778-784

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Short notes

Natural boundaries of Northern Patagonia

Víctor A. Ramos, Alberto C. Riccardi, Edgardo O. Rolleri

785-786

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Angelaite in the paragenesis of Los Manantiales district, Chubut, Argentina: a new mineral species

M.B. Brodtkorb, W. Paar

787-789

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