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Khaled Trabelsi, Lassad Tiss, Benjamin Sames, Yassine Houla, Amine Hanini, Faycel Elferhi, Ahmed Skanji, Fekri Kamoun, Mohamed Faouzi Zagrarni and Michael Wagreich
Marginal-marine to non-marine ostracod assemblages from the Bajocian (Mid-Jurassic) of southern Tunisia, precisely from the Krachoua Formation at the Kef El Anneba section near the Beni Kheddache area, are here described and tested for their utility to i...
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Ana Mestre,Mercedes Gallardo,María José Salas,Susana Heredia
Pág. 423 - 444
The microfossil hosted in the strata of the upper part of the San Juan Formation has been widely studied in several sections to the northward of the Argentinian Central Precordillera. In contrast, the coeval strata at the Los Baños de Talacasto section, ...
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Andrea F. Sterren,Gabriela A. Cisterna,Óscar López-Gamundí,María M. Vergel
Pág. 110 - 124
The Agua del Jagüel Formation crops out in the southernmost part of the Calingasta-Uspallata basin, in central western Argentina. The lower part of the unit is characterized by a glacigenic sequence with diamictites and mudstones with dropstones. In the ...
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Victor Maksaev,Francisco Munizaga,Colombo Tassinari
Pág. 447 - 506
U-Pb zircon geochronological data provide record of about 130 Ma of igneous activity in the Andes of northern Chile, which extended episodically from the latest Early Carboniferous to Early Jurassic (328-194 Ma). The overall U-Pb data show that volcanism...
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Leandro D?Elia,Martin Muravchik,Juan R. Franzese,Andres Bilmes
Pág. 106 - 132
The Neuquen Basin constitutes one of the most conspicuous features of the Andean margin of Gondwana during Mesozoic times. The initial syn-rift infill (Late Triassic-Early Jurassic) of this ensialic extensional basin involved a profuse magmatic activity ...
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Paul Duhart,Alberto C. Adriasola
The Coastal Ranges in the western part of the Chiloé Archipelago represent an emerged forearc high at the subduction front of south-central Chile. Prior to the Cenozoic framework of the subducting Farallón and Nazca plates beneath the South American plat...
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Carlos J. Chernicoff,Eduardo O. Zappettini
Pág. 299 - 316
The geological interpretation of the high-resolution aeromagnetic data of the La Pampa province, in addition to the low-density magnetic information from the region of the Neuquina and Colorado basins, leads to define the precise boundaries of the Chilen...
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Constantino Mpodozis,Paula Cornejo,Suzanne M. Kay,Andrew Tittler
Pág. 273 - 313
RESUMEN. La Franja de Maricunga, de 200 km de largo, portadora de mineralizacion de metales preciosos, se extiende en el borde occidental del Altiplano de Copiapo (26-28°S) y representa el frente volcanico Oligoceno-Mioceno de la zona sur de los Andes Ce...
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