... of the Santo Domingo and El Durazno Formations. In contrast to simple asymmetric foreland models, provenance analysis documents early participation of crystalline rocks, suggesting early development of intrafore-land basement highs within the southern Central Andes. At a regional scale, basement thrusting...

...Francisco Camus; Ricardo Boric P.; Milka Alexandra Skewes; Juan Carlos Castelli; Enrique Reichhard; Andres Mestre Abstract The El Bronce epithermal vein system, located in the western foothills of the Andean Cordillera of central Chile, contains 25 metric tons of gold, 105 metric tons of silver...

... tectonometamorphic overprint by the ARSZ, is most critical for understanding initial pluton formation. Figure 7. Cartoon showing the main stage of emplacement and deformation of the Cerro Durazno pluton in map view ( a , c ) and profile plane ( b ). See text for explanation. Regardless of postmagmatic...

..., apodous abdomen. Finally, a long, styliform tail-like structure is inserted in the center of the posterior area and is distally divided. Quebrada del Durazno locality, Potrerillos Formation (upper section), lower Upper Triassic (Carnian), south of the Cerro Cacheuta, Potrerillos-Cacheuta depocenter...

... La Mesa’; 3  =  ‘Hacienda El Durazno’; 4  =  ‘El Potrero’; 5  =  ‘Arroyo Temazcal’; 6  =  ‘Cerro El Tanque’; 7  =  ‘Cantera de Guadalcázar 1’; 8  =  ‘Cantera de Guadalcázar 2’; 9  =  ‘Arroyo El Aguaje.’ Studied outcrops are mainly mapped as El Abra Formation, or equivalent...

... bioclastic limestones of the Chachao Formation (Valanginian). At the Arroyo Paulino section, located 14 km north of the Arroyo Durazno section, ~220 m of the upper portion of the Vaca Muerta Formation were prospected. To the south, at Arroyo del Yeso, the Vaca Muerta Formation (~400 m thick) lies...

...F ig . 4. Measured section illustrating the transition from the El Morterito Formation to the Farallón Negro volcanics along Sierra del Durazno (measured section A, Fig. 2 ; 3446922mE, 6980812mN). Note the upward coarsening at the top of the El Morterito Formation, the presence...

... biostratigraphy taxonomy Lower Devonian Pragian–Emsian boundary bipolar acritarchs Uruguay Palynomorphs from the Devonian of Uruguay were first reported in the Cordobés Formation by Martínez Macchiavelo ( 1968 ) from one outcrop sample near Blanquillo town in the Durazno Department. The same material...

... by surface study and proved by drilling, makes hardly possible the accumulation of oil in commercial amount. It is probable that faults and fractures penetrating most of the sedimentary formations, and many diabases, both intrusive and extrusive, would have come into contact with any oil sands if such had...

... and Tables 1 and 2 (page 7) for district, deposit, and prospect locations and Figure 2 (page 8) for province locations. Argentina is host to a spectrum of mineralized geological environments from Proterozoic to Recent that includes possible eastward extensions of Chile’s prolific El Indio...

... Luracatao, COL—Colome, CD—Cerro Durazno; AFT—apatite fission track; AHe—apatite He. (1) Andriessen and Reutter (1994) ; (2) Carrapa et al. (2011a) ; (3) Coutand et al. (2001) ; (4) Coughlin et al. (1998) ; (5) Deeken et al. (2006) ; (6) Mortimer et al. (2007) ; (7) Sobel and Strecker (2003) ; (8...

... continental red beds of the El Morterito Formation ( Turner, 1962 , 1963), which are up to 1,500 m thick elsewhere in the region, but do not exceed several hundred meters in the Farallón Negro district. The underlying crystalline basement predominantly consists of the Upper Ordovician-Lower Silurian...

... formations at the Vinazco River, between El Zopilote and El Durazno creeks, are remarkable for their well preserved fossil plants. The Middle Jurassic has not been identified except in the vicinity of Cualac, Guerrero, and in a very small area of Oaxaca. It consists of limestones and dark marls...

...-Alzola, 1938 , from the Emsian of the El Cordobés Formation, Durazno Department, Uruguay, was based on a single articulated specimen, mainly preserved as an internal mold, lacking the pygidium (p. 54, pl. 12, fig. 5, pl. 13, fig. 1). The species was diagnosed by its large size (18 cm of sagittal length...

... size of the El Durazno Formation relative to the underlying sequences and the presence of contrasted compositions when compared with other contemporaneous deposits in the broken foreland (Dávila & Astini, 2007 ) would support the existence...

... and Duraznos thrusts. It consists mainly of mafic and ultramafic rocks, with minor outcrops of felsic rocks (tonalite–trondhjemite–granodiorite) (Pankhurst & Rapela, 1998 ; Vujovich & Kay, 1998 ). The age of the igneous rocks of the complex ranges between c . 1030 Ma and c . 1245 Ma (Vujovich et...