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Isotopic characteristics and paleoclimate implications of the extreme precipitation event of March 2015 in northern Chile

Abstract: Prior to the 24-26 March 2015 extreme precipitation event that impacted northern Chile, the scenarios for Pleistocene and Holocene wetter paleoclimate intervals in the hyperarid core of the Atacama Desert had been attributed to eastern or southwestern mois

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Crustal faults in the Chilean Andes: geological constraints and seismic potential

Abstract: The Chilean Andes, as a characteristic tectonic and geomorphological region, is a perfect location to unravel the geologic nature of seismic hazards. The Chilean segment of the Nazca-South American subduction zone has experienced mega-earthquakes with Mom

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Characterization of seismogenic crustal faults in the Gulf of Guayaquil, Ecuador

Abstract: Few moderate-to-strong earthquakes associated with active and capable geological faults have been documented for the southern coastal region of Ecuador. The seismic record of Ecuador initiates with the Guayaquil earthquake in 1787 (Mw 6.5), followed by the

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Reviewing the Antioquia batholith and satellite bodies: a record of Late Cretaceous to Eocene syn- to post-collisional arc magmatism in the Central Cordillera of Colombia

Abstract: The Antioquia batholith represents the magmatic record of the interaction between the Farallón and Caribbean plates with the NW part of the South American Plate during the Meso-Cenozoic. Several authors have reported zircon U-Pb ages and whole rock geochem

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Evolution of the Palaeozoic basement of the North Patagonian Andes in the San Martín de los Andes area (Neuquén, Argentina): petrology, age and correlations

Abstract: In San Martín de los Andes area (Argentinian Patagonia) the Palaeozoic basement consists of metamorphic and plutonic rocks. The metamorphic rocks include strongly deformed schists, gneisses and migmatites. Their geochemical and petrographic characteristics

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Cenozoic geologic evolution of the lower Colorado River Basin, Northern Patagonia, Argentina

Abstract: Climatic changes and eustatic sea levels have been assumed to be the most important controllers of the Colorado River alluvial fan in northern Patagonia. Although the alluvial fan occurs in a region considered tectonically stable, there are pieces of evid

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New records and diet reconstruction using dental microwear analysis for Neolicaphrium recens Frenguelli, 1921 (Litopterna, Proterotheriidae)

Abstract: Neolicaphrium recens is the only survivor proterotherid in the Quaternary of South America, of which few fossil records from Argentina, Uruguay and probably Brazil are known. In this paper we describe new cranial remains with teeth series of N. recens from

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Early Ordovician conodonts from the Santa Rosita Formation at Pantipampa, Iruya area, northwestern Argentina

Abstract: A conodont assemblage recovered from the middle part of the Santa Rosita Formation at Pantipampa (Iruya area, northwestern Argentina) is described herein. It includes Cordylodus angulatus Pander, C. cayesi Druce and Jones, C. lindstromi Druce and Jones, C.

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Foraminíferos miocenos en la cuenca Neuquina, Argentina: implicancias estratigráficas y paleoambientales
Carolina Náñez Norberto Malumián

Resumen: En los perfiles Opaso y Bajada del Jagüel, situados en el bajo de Añelo, cuenca Neuquina, Argentina, las fangolitas de la Formación Jagüel, de edad maastrichtiana a daniana, están cubiertas por una sucesión de coquinas muy ricas en ostreidos, areniscas y l

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Origen and evolution of gypsum stromatolites in salars of the Andes highlands, northern Chile
Oscar Ercilla Herrero

Abstract: In several salars in the Andes Highlands in Chile, gypsum stromatolites have been described. Stromatolites are structures with organic origin and they are normally formed by carbonates. Field observations achieved in five salars in the Andes of northern Ch

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