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Francisco Hervé,Colombo Tassinari,Umberto Cordani,Miguel Angelo Stipp Basei,Marcos Zentilli
Pág. 307 - 309
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Stefano Negrini, Fabio Zaina, Claudio Cordani and Sabrina Donzelli
Background: The Roussouly classification, based on the functional parameter sacral slope (SS), describes the normal sagittal balance in adults and has proved useful for surgery. Reference values in children should be defined, since they are an important ...
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Alvaro Rodrigo Iriarte,Umberto Giuseppe Cordani,Kei Sato
Pág. 403 - 441
The Cordillera Real granitoids are a suite of Triassic and Oligocene plutons in the core of the Eastern Cordillera of the Central Andes of Bolivia. Their tectonic setting, chemical and ore compositions make them part of the so-called ?Inner Magmatic Arc?...
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Leda Sanchez Bettucci,Umberto Giuseppe Cordani,Judith Loureiro,Elena Peel,Santiago Fort,Kei Sato
Pág. 442 - 471
A U-Pb SHRIMP zircon geochronological study was carried out in the Nico Pérez Terrane in the central-eastern portion of Uruguay with the aim of constraining its geological evolution and its cratonic affinity. Nico Pérez Terrane is made up by a mosaic of ...
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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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Gilda Collo,Ricardo A. Astini,Agustin Cardona,Margarita D. Do Campo,Umberto Cordani
Pág. 191 - 214
Many of the metamorphic and deformational events associated to low-grade units in NW Argentina have been linked with ancient orogenies, like the Pampean (Cambrian) and the Ocloyic (Ordovician) cycles. The lack of specific ages in the low-grade metamorphi...
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Mauricio Calderon,Francisco Herve,Umberto Cordani,Hans-Joachim Massonne
Pág. 249 - 276
A Late Jurassic seafloor remnant of the Rocas Verdes basin in southern Chile, the Sarmiento Complex {ca. 52°S), bears lithological layers with bimodal meta-igneous rocks appropriate for a comprehensive investigation of magma genesis in part of a lateral ...
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Francisco Hervé
Pág. 255
Tectonic evolution of South America by U.G Cordani et al
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D. Pacci,F. Herve,F. Munizaga,K. Kawashita,U. Cordani
RESUMEN:Un estudio geocronologico preliminar de la Formacion Esquistos de Belen, por el metodo Rb-Sr en roca total, sugiere que hace 1.000 m.a. tuvo lugar una homogenizacion isotopica de las muestras analizadas, probablemente, durante un episodio de meta...
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