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Wieslaw Trela, Ewa Krzeminska, Karol Jewula and Zbigniew Czupyt
This report provides oxygen isotopes from apatite of late Middle and Late Ordovician conodonts from the southern Holy Cross Mountains in south-eastern Poland. It was a unique time interval characterised by a significant change in the Ordovician climate, ...
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José Luis Carrasco,Hans Niemeyer
Pág. 577 - 591
The El León pluton, located in the Cordón de Lila in the Precordillera of the Antofagasta region, Chile, is an intrusive body emplaced in the famatinian magmatic arc in the southwestern margin of Gondwana during the Darriwilian (Middle Ordovician). It ha...
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Fernanda Serra,Nicolás A. Feltes,Matías Mango,Miles A. Henderson,Guillermo L. Albanesi,Gladys Ortega
Pág. 125 - 143
The Ordovician System is extensively represented in the Precordillera of San Juan Province, Argentina. At the Cerro La Chilca in the Jáchal area, the limestone of the San Juan Formation is paraconformably overlain by interbedded limestone and shale of th...
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Blanca A. Toro,Susana E. Heredia,Nexxys C. Herrera Sánchez,Florencia Moreno
Pág. 144 - 161
Recent biostratigraphic studies on the western argentine Puna recorded the Middle Ordovician conodont Baltoniodus cf. B. navis (Lindström) for first time, related to key graptolite taxa of the Central Andean Basin. The analyzed material comes from the lo...
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Susana Heredia,Ana Mestre,Cintia Kaufmann,Tatiana Soria
Pág. 336 - 344
The stratigraphic record of the Pygodus serra conodont Zone in the Cuyania terrane of western Argentina is discussed in this contribution. Three well-known sections were sampled in Precordillera and the San Rafael Block. The studied successions are compo...
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Susana Heredia,Ana Mestre
Pág. 556 - 566
The Middle-Upper Ordovician Ponón Trehué Formation cropping out in the San Rafael Block (Argentina) provided a large collection of conodonts which have been published years ago. The species Eoplacognathus robustus and Eoplacognathus lindstroemi recovered...
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Matías J. Mango,Guillermo L. Albanesi
Pág. 274 - 299
The present study deals with the conodont biostratigraphy from the middle and upper parts of the San Juan Formation (Lower-Middle Ordovician) exposed at the Los Gatos creek section, west of the cerro Viejo de Huaco, Central Precordillera of San Juan Prov...
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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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Nicolás A. Feltes, Guillermo L. Albanesi, Stig M. Bergström
Pág. 60 - 85
Middle Darriwilian to lower Sandbian conodonts were recorded from the Las Aguaditas Formation at
its type section in the Argentine Precordillera. A total of 9,974 conodont specimens were recovered from 46 carbonate
samples, which represent 68 species of ...
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Sebastián O. Verdecchia,Juan Alberto Murra,Edgardo Gaspar Baldo,Cesar Casquet,Inmaculada Pascua-González,Julio Saavedra
Pág. 380 - 400
The metamorphic complex of Sierra de Los Llanos is composed of low- to high-grade metasedimentary rocks, namely phyllites, schists, gneisses and migmatites that out crop like large septa within lower Ordovician magmatic units. Cornubianite associated wit...
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