Results 91 to 100 of about 1,408 (212)

Tectonic framework of the Cabo Ortegal Complex: A slab of lower crust exhumed in the Variscan orogen (northwestern Iberian Peninsula)

, 2002
The Cabo Ortegal Complex is a composite allochthonous terrane that was thrust onto the western edge of Gondwana during the Variscan orogeny. It is formed of two main tectonic units: the Upper Tectonic unit, comprising rocks affected by highpressure (P)
Farias Arquer, Pedro José, Galán, Gumer, A. Marcos, Fernández Rodríguez, Francisco José, Marcos Vallaure, Alberto, Llana Fúnez, Sergio, P. Farias, F.J. Fernández, G. Galán, S. Llana-Fúnez   +9 more
core   +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)

BSGF - 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, Trap Pierre, Goncalves Philippe, Roger Françoise, Lanari Pierre, Piccoli Francesca, Marquer Didier, Paquette Jean-Louis, Melleton Jérémie   +8 more
doaj   +1 more source

Non-coaxial deformation of foreland basement involved in a fold-and-thrust belt: a strain partitioning approach to the Eastern Variscan orogen. [PDF]

Sci Rep, 2023
Mareček L, Melichar R, Černý J, Schnabl P, Hrdličková K, Buriánek D.   +5 more
europepmc   +1 more source

Early Permian 90° clockwise rotation of the Maures–Este ́rel– Corsica–Sardinia block confirmed by new palaeomagnetic data and followed by a Triassic 60° clockwise rotation

, 2014
Palaeomagnetic investigations of the Corso-Sardinian block and Maures–Este ́rel show that there has been a change in their magnetic orientation during the Late Carboniferous–Early Permian period (305–280 Ma).
Edel JB, Schulmann K., CASINI, Leonardo, OGGIANO, Giacomo, Rossi Ph   +4 more
core   +1 more source

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

Geosciences
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, Omar Guillou, Andreas Gärtner, Abdelkrim El Archi, Abdelmohsine Aghzer, Hervé Bellon, Paul A. Mueller, Papa Moussa Ndiaye, Nasrrddine Youbi, Ulf Linnemann, Michel Corsini   +10 more
doaj   +1 more source

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

Geosciences
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, Nouamane El Aouad, Youssef Daafi, Yousra Morsli, Marouane Chniouar, Rosalda Punturo, Aida Maria Conte, Daniela Guglietta, Wissale Aba Sidi   +8 more
doaj   +1 more source

Late orogenic evolution of the Variscan lithosphere: Nd isotopic constraints from the western Alps

, 2002
International audienceWe performed geochemical analyses (major- and trace-elements, Nd isotopes) of Late Variscan igneous rocks from the western Alps in order to better constrain the lithospheric evolution at the end of the Variscan orogeny.
Cannic, Sébastien, Lapierre, Henriette, Basile, Christophe, Monié, P., Briqueu, Louis, Briqueu, L., Monie, Patrick, Cannic, S.   +7 more
core  

Isotopic signatures of fluid inclusions from quartz veins record sub-surface fluid-rock interaction associated with the Variscan orogeny

The presence of fluid inclusions in quartz veins is crucial to reconstruct fluid migration pathways in the subsurface. In this study, we provide an innovative approach to analyse the hydrogen and oxygen isotopic composition of water fluid inclusions ...
Wijbrans, Jan, Huseynov, Akbar Aydin Oglu; id_orcid, Verdegaal-Warmerdam, S.H.M. (Suzan), van der Lubbe, Jeroen; id_orcid, Kuiper, Klaudia, Postma, Onno   +5 more
core   +1 more source

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

BSGF - 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., Gloaguen Eric, Tuduri Johann, Pochon Anthony, Iacono-Marziano Giada, Poujol Marc, Higueras Pablo, Virtanen Ville J., Sizaret Stanislas, Lorenzo Saturnino, Esbri José-María, Mollé Valentin   +11 more
doaj   +1 more source

The copper history in the Anti Atlas belt,from Panafrican to Variscan orogeny, apersistence of tectonic controls: an overviewof Bou Azzer-El Graara inlier

, 2016
National audienceThe Anti-Atlas belt is well known for its numerous copper deposits.It displays also a complex geological, metallogenic andtectonic history which is challenging for mining companies in orderto better understand and prospect these Cu ...
Barbanson, Luc, Bourque, Hugo, Branquet, Yannick, Sizaret, Stanislas, Al., Et   +4 more
core