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21.962  Articles
1 of 2.197 pages  |  10  records  |  more records»
Internal temperature variations of pyroclastic flows and their deposits are arguably the most challenging data to acquire. As a preliminary study of the temperature variation inside pyroclastic flows, the remains of Onokoba Elementary School (Shimabara, J... see more

Post-crystallization evolution of the metatroctolites of the Lago Ñorquinco zone, Aluminé Igneous-Metamorphic Complex, is analyzed. These mafic rocks show coronas around olivine, composed of Opx, Cpx, Spl and Amp (Hbl1 and Hbl2). The temporal evolution of... see more

The interaction between basic and acid magmas has been widely recorded in batholiths and plutons from magmatic arcs. The Sierra de Varas Pluton (SVP), a zoned elliptical granitic body emplaced during the Carboniferous-Permian boundary (~300 Ma), and expos... see more

A petrological and geochemical study of Lower Ordovician epidote-bearing granitoids of the Sierra de Chepes (Famatinian Orogen, Sierras Pampeanas, Argentina) indicates low-pressure emplacement of these extensive metaluminous suites. Textural relationships... see more

The Tartoq greenstone belt of southwest Greenland represents a well-preserved section through >3 Ga old oceanic crust and has the potential to provide important constraints on the composition and geodynamics of the Archaean crust. Based on a detailed s... see more

Units with extremely variable erodibility are typical in the succession of pyroclastic-dominated volcanic fields. Welded ignimbrites are usually resistant to erosion, thus, they often appear as positive landforms, i.e., mesas or tilted plateaus after mill... see more

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 has... see more

The application of thermo-rheological models to forecast active lava flow emplacement and quantify the eruptive parameters of older flow-producing eruptions has become a somewhat common tool over the last decade. With the modification and adaption of thes... see more

Lava flows are a common hazard at basaltic to intermediate volcanoes in general and have posed a significant threat to La Reunion Island specifically over the past centuries. In sustained flow units, the efficiency of lava transport away from the vent is ... see more

1 of 2.197 pages  |  10  records  |  more records»