Results 61 to 70 of about 1,858 (217)

Episodic melting and magmatic recycling along 50 Ma in the Variscan belt linked to the orogenic evolution in NW Iberia

, 2017
The advent of a large amount of more precise U-Pb age data on Variscan granitoids from NW Iberia in recent years has provided a more focused picture of the magmatic history of the Western European Variscan belt (WEVB).
Gärtner, Andreas, Gärtner, A., Hofmann, Mandy, G García Acera, López Carmona, Alicia, Hofmann, M., García Acera, G, G Gutiérrez-Alonso, López-Carmona, Alicia, A Gärtner, Gärtner, A, A López-Carmona, M Hofmann, Fernández-Suárez, Javier, Fernández Suárez, Javier, Gutiérrez-Alonso, Gabriel, García Acera, G., J Martín Garro, J Fernández-Suárez, Martín Garro, J., Gutiérrez Alonso, Gabriel, Hofmann, M   +21 more
core   +2 more sources

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

BSGF - 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, Laurent Oscar, Bouilhol Pierre, Chelle-Michou Cyril, Ganzhorn Anne-Céline, Gardien Véronique, Moyen Jean-François   +6 more
doaj   +1 more source

Late Palaeozoic palaeomagnetic and tectonic constraints for amalgamation of Pangea supercontinent in the European Variscan belt

, 2018
International audienceThis paper provides a review of the evolution of palaeomagnetic directions and sequence of tectonic events in the European Variscan belt during Late Palaeozoic times.
Jean Marc Lardeaux, Lexa, Ondrej, Jean Bernard Edel, Ondrej Lexa, Lardeaux, Jean Marc, Karel Schulmann, Schulmann, Karel, Edel, Jean Bernard   +7 more
core   +1 more source

Garnet–Clinopyroxene Double‐Layered Coronae in a Metagabbronorite From the High‐Grade Metamorphic Gföhl Unit, Moldanubian Zone

Journal of Metamorphic Geology, Volume 44, Issue 4, Page 311-336, May 2026.
ABSTRACT This study investigates garnet–clinopyroxene double‐layered coronae in a metagabbronorite from the high‐grade metamorphic Gföhl Unit (Bohemian Massif). The coronae formed at the interfaces between relic magmatic orthopyroxene, still preserved in the cores of the coronae, and the plagioclase‐rich rock matrix.
Rene Asenbaum, Tereza Nemeškalová, Martin Racek, Vojtěch Janoušek, Julian Portenkirchner, Rainer Abart   +5 more
wiley   +1 more source

A >300 Myr Long‐Lived Topographic Highland Along the Northern North China Craton Margin Driven by Multistage Continental Convergence

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract Topographic highlands commonly develop along convergent plate boundaries through long‐term processes such as subduction and continental collision. However, the pre‐Cenozoic mountain‐building history of deep‐time orogenic systems in northeastern Pangaea remains poorly constrained due to later tectonic overprinting and denudation.
Heng Peng, Licheng Wang, Jianqiang Wang, Yazuo Niu, Yahui Yue, Jingbo Sun, Bitian Wei, Chiyang Liu, Massimiliano Zattin, Lin Ding   +9 more
wiley   +1 more source

Geochemical and mineralogical features of the polymetallic deposit from Ali' (NE Sicily, Italy)

Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2007
The mineralization processes in the Peloritani Belt (Southern Sector of the Calabria- Peloritani Arc), related to Pre-Variscan intracontinental rifting, produced sedex-type Pb, Zn, F (Ag), Cu, W (As, Sb) ores.
D'Urso, D, De Fazio, A, Nucera, P, Sacca', D, Sacca', C   +4 more
doaj   +1 more source

A Common Mantle Source for the Endogenous CO2 Degassed at the Eifel (Western Germany) and the Ardennes (Eastern Belgium) Regions

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 4, April 2026.
Abstract Tectonic CO2 Earth degassing is globally relevant and has probably controlled climate on a geological scale (Brune et al., 2019, https://doi.org/10.1038/s41561‐017‐0003‐6). Endogenous CO2 outgassing from rifting areas remains poorly constrained, with most available data from the East African Rift.
Lisa Ricci, Francesco Frondini, Daniele Morgavi, Stefano Caliro, Andrea Luca Rizzo, Tobias P. Fischer, Giovanni Chiodini   +6 more
wiley   +1 more source

Coesite Discovery in Eclogites Confirms UHP Metamorphism in the Orlica‐Śnieżnik Dome (SW Poland)

Journal of Metamorphic Geology, Volume 44, Issue 3, Page 200-225, April 2026.
ABSTRACT Eclogite lenses are exposed within the orthogneiss‐dominated core of the Orlica‐Śnieżnik Dome in the Sudetes, which forms the northeastern margin of the Bohemian Massif (Variscan Belt of Central Europe). The presence of coesite inclusions in garnet and omphacite confirms that these eclogites underwent ultrahigh‐pressure metamorphism.
Małgorzata Nowak, Lucie Tajčmanová, Marcin Dąbrowski, Iris Buisman, Jacek Szczepański   +4 more
wiley   +1 more source

Late-Variscan multistage hydrothermal processes unveiled by chemical ages coupled with compositional and textural uraninite variations in W-Au deposits in the western Spanish Central System Batholith

Geologica Acta, 2019
The scheelite skarn from Los Santos and the W-Au veins from El Cabaco district, located in the Spanish Central System Batholith (SCSB), are some of the best-known tungsten ore deposits in Spain.
S.M. Timón-Sánchez, F.J. López-Moro, R.L. Romer, D. Rhede, A. Fernández-Fernández, C. Moro-Benito   +5 more
doaj   +1 more source

Variscan collisional magmatism and deformation in NW Iberia: Constraints from U-Pb geochronology of granitoids

, 2000
U–Pb geochronology of Variscan granitoid rocks from the West Asturian Leonese Zone of the NW Iberian belt documents the episodic nature of magmatism in this section of the western European Variscides.
Jenner, G.A., Fernández Suárez, Javier, Dunning, G.R., Gutiérrez-Alonso, G   +3 more
core   +1 more source