Results 71 to 80 of about 17,177 (230)

Paleofluid Fingerprint as an Independent Paleogeographic Correlation Tool: An Example from Pennsylvanian Sandstones and Neighboring Crystalline Rocks (Tisia Composite Terrane, S Hungary)

Geofluids, 2020
In the basement areas of the southern Pannonian Basin, Central Europe (Tisia Composite Terrane, Hungary), Variscan blocks are essential components. The existing paleogeographic reconstructions, however, are often unclear and contradictory.
Krisztián Fintor, Andrea Varga
doaj   +1 more source

Kinematics, deformation partitioning and late Variscan magmatism in the Agly massif, Eastern Pyrenees, France

BSGF - Earth Sciences Bulletin, 2020
In order to constrain the finite deformation pattern of the Variscan basement of the Agly massif, a detailed structural analysis over the whole Agly massif was performed.
Vanardois Jonas, Trap Pierre, Goncalves Philippe, Marquer Didier, Gremmel Josselin, Siron Guillaume, Baudin Thierry   +6 more
doaj   +1 more source

Geology of the Cabuérniga Fault System: evolution of a large Alpine structure with Variscan inheritance

Journal of Maps, 2021
The Cabuérniga Fault System (CFS) extends for 150 km in E–W trend along the northern divide of the Cantabrian Mountains, near the Cantabrian Sea. This fault system was reactivated several times since the Paleozoic, and displays hydrothermal activity ...
Nemesio Heredia, Fidel Martín-González, Pedro Farias, Joaquín García-Sansegundo, David Pedreira, Brais Gonzalo-Guerra, Gabriel García-Davia, Guillermo Mateos, Adriana G. Flórez-Rodríguez   +8 more
doaj   +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

Sedimentary provenance of siliciclastic rocks from the Lalla Mouchaa Calcschists Formation (Coastal Block, Western Rehamna): Evidence of denudation of ca. 2 Ga basement in the Moroccan Meseta. [PDF]

, 2018
Paleoproterozoic basement rocks (ca. 2Ga) are scarce along the European and North African Paleozoic mountain chains (Fig.1a). In Morocco, ca. 2.2-2Ga granitic rocks (Gasquet et al., 2008; Kouyaté et al., 2013) have been exclusively reported in the ...
El Attari, A., El Houicha, M., Ennih, N., Ezzouhairi, H., Fekkak, A., Gama, C., Jouhari, A., Pereira, M.F., Silva J.B.   +8 more
core  

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

Tectonics, ore bodies, and gamma-ray logging of the Variscan basement, southern Gennargentu massif (central Sardinia, Italy)

Journal of Maps, 2017
We present a structural geological map (1:14,000 scale) that covers a 100 km2 area of Variscan basement rocks exposed in central Sardinia. The mapped area is located between 39°56′20′′ N 9°04′59′′ E (northwestern corner) and 39°51′47′′ N 9°13′16′′ E ...
Mattia Alessio Meloni, Giacomo Oggiano, Antonio Funedda, Marco Pistis, Ulf Linnemann   +4 more
doaj   +1 more source

Variscan thrusting in I- and S-type granitic rocks of the Tribeč Mountains, Western Carpathians (Slovakia): evidence from mineral compositions and monazite dating

Geologica Carpathica, 2015
The Tribeč granitic core (Tatric Superunit, Western Carpathians, Slovakia) is formed by Devonian/Lower Carboniferous, calc-alkaline I- and S-type granitic rocks and their altered equivalents, which provide a rare opportunity to study the Variscan ...
Broska Igor, Petrík Igor
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

Assessing the Helium Potential of Variscan Batholiths: Insight From Corsica Island

Geochemistry, Geophysics, Geosystems
Most of the current helium (He) reserves originate from fortuitous discoveries, mainly made during oil and gas exploration in sedimentary basins. As helium generation depends on U and Th α‐decay, old geological provinces gather key ingredients for high ...
H. Dutoit, F. V. Donzé, C. Cardoso, J. Charroy, C. Riba Pereyra, A. Taillefer, C. Dusséaux, D. Tisserand, L. Monnier, S. Byrdina, R. Pik, L. Truche   +11 more
doaj   +1 more source