Results 71 to 80 of about 273 (174)

Geochronology, geochemistry, and geological evolution of the Troiseck-Floning and Rosskogel nappes (Eastern Alps): unraveling parallels between the Eastern Alps and Western Carpathians

open access: yesSwiss Journal of Geosciences
The Troiseck-Floning and Rosskogel nappes are part of the Austroalpine Unit in the eastern part of the Eastern Alps. The nappes are in tectonic contact and comprise Permian to Mesozoic lower greenschist facies metamorphic metasediments, but only the ...
Martin K. Reiser   +4 more
doaj   +1 more source

Deciphering orogeny: a metamorphic perspective. Examples from European Alpine and Variscan belts

open access: yesBulletin de la Société Géologique de France, 2014
AbstractIn this paper we review and discuss, in a synthetic historical way, the main results obtained on Alpine metamorphism in the western Alps. First, we describe the finite metamorphic architecture of the western Alps and discuss its relationships with subduction and collision processes.
openaire   +1 more source

Late Ediacaran juvenile magmatism in the Variscan Monts-du-Lyonnais metamorphic complex (Massif Central, France)

open access: yesBSGF - Earth Sciences Bulletin
The identification of oceanic sutures is key to understanding the evolution of the Paleozoic Variscan belt and the structure of the West European lithosphere.
Couzinié Simon   +6 more
doaj   +1 more source

An archosauromorph dominated ichnoassemblage in fluvial settings from the late Early Triassic of the Catalan Pyrenees (NE Iberian Peninsula).

open access: yesPLoS ONE, 2017
The vertebrate recovery after the end-Permian mass extinction can be approached through the ichnological record, which is much more abundant than body fossils.
Eudald Mujal   +4 more
doaj   +1 more source

Quantitative P–T–t–D Paths: A Key to decipher orogenic dynamics in the Variscan Aiguilles Rouges Massif (External Crystalline Massifs, Western Alps)

open access: yesBSGF - Earth Sciences Bulletin
This study investigates the P–T–t–D evolution of two metapelitic samples from the middle crust exposed in the Aiguilles Rouges Massif. Garnet compositional mapping, phase equilibrium modelling, zirconium-in-rutile thermometry, trace element geochemistry ...
Vanardois Jonas   +8 more
doaj   +1 more source

Imprint of the Reguibat Promontory (West Africa) on the Appalachian, Mauritanide and Souttoufide Belts During the Assembly of Pangaea

open access: yesGeosciences
During the course of the Carboniferous to Permian, large parts of eastern Laurentia and northern Gondwana were affected by the Variscan Orogeny accompanying the assembly of Pangea. Here, we concentrate on the Appalachian belt of eastern Laurentia and the
Michel Villeneuve   +10 more
doaj   +1 more source

Geological and Geochemical Characterization of Variscan Pegmatites in the Sidi Bou Othmane District, Central Jebilet Province, Morocco

open access: yesGeosciences
The Sidi Bou Othmane (SBO) pegmatite district is situated in the Central Jebilet massif, Western Meseta domain, Morocco. The SBO district is hosted essentially in a volcano-sedimentary series composed of Late-Devonian Sarhlef shales.
Amina Wafik   +8 more
doaj   +1 more source

Geochemistry and geochronology of the Palaeozoic mafic magmatism in the Codosera, Almadén and Guadalmez synclines, Central Iberian Zone, Spain

open access: yesBSGF - Earth Sciences Bulletin
The Central Iberian Zone (CIZ) hosts several mafic suites showing variable geochemical affinities and signatures evolving through time. To provide a better understanding of magmatic processes, possible sources and the temporal evolution of the mafic ...
Campos-Rodríguez Héctor R.   +11 more
doaj   +1 more source

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