Results 51 to 60 of about 6,109 (226)

The Long-Lasting Exhumation History of the Ötztal-Stubai Complex (Eastern European Alps): New Constraints from Zircon (U–Th)/He Age-Elevation Profiles and Thermokinematic Modeling [PDF]

Lithosphere
The Eastern European Alps formed during two orogenic cycles, which took place in the Cretaceous and Cenozoic, respectively. In the Ötztal-Stubai Complex—a thrust sheet of Variscan basement and Permo-Mesozoic cover rocks—the record of the first (Eoalpine)
Kyra Hölzer, Reinhard Wolff, Ralf Hetzel, István Dunkl   +3 more
doaj   +1 more source

Reassessing the intrusive tempo and magma genesis of the late Variscan Aar batholith: U–Pb geochronology, trace element and initial Hf isotope composition of zircon

Swiss Journal of Geosciences, 2022
The Variscan orogeny was responsible for the formation of a significant volume of igneous basement throughout present-day Europe. Detailed understanding of these rocks has, however, been obfuscated by significant overprinting during younger geologic ...
Mélissa Ruiz, Urs Schaltegger, Sean P. Gaynor, Massimo Chiaradia, Jürgen Abrecht, Christian Gisler, Federico Giovanoli, Michael Wiederkehr   +7 more
doaj   +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

Zircon age of vaugnerite intrusives from the Central and Southern Vosges crystalline massif (E France): contribution to the geodynamics of the European Variscan belt

BSGF - Earth Sciences Bulletin, 2020
To provide a better picture of the active geodynamics along the Variscan suture zones during the late collisional stage (particularly regarding the evolution of the orogenic system towards HT conditions), we focused here on vaugnerites, which consist of ...
Guillot François, Averbuch Olivier, Dubois Michel, Durand Cyril, Lanari Pierre, Gauthier Arnaud   +5 more
doaj   +1 more source

Modélisation géométrique 3D des granites stéphaniens du massif du Pelvoux (Alpes, France). [PDF]

, 2005
International audienceLa modélisation 3D de la géométrie des granites Stéphaniens du Massif du Pelvoux a permis de mettre en évidence le contexte cisaillant associé à leur mise en place.
Courrioux, Gabriel, Guillot, Stéphane, Ledru, Patrick, Strzerzynski, Pierre   +3 more
core   +5 more sources

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

The Cu–Pb–Zn-bearing veins of the Bou Skour deposit (Eastern Anti-Atlas, Morocco): structural control and tectonic evolution

Comptes Rendus. Géoscience, 2021
In the central Saghro massif of the Moroccan Anti-Atlas belt, the Bou Skour polymetallic deposit is hosted within mafic to felsic rocks of the Ediacaran Saghro Group and the lower Ouarzazate Group together with Pan-African plutons and dykes.
Aabi, Ayoub, Baidder, Lahssen, Hejja, Younes, El Azmi, Mohammed, Nait Bba, Abdellah, Otmane, Khadija   +5 more
doaj   +1 more source

Magnitude of rift-related burial and orogenic contraction in the Marrakech High Atlas revealed by zircon (U-Th)/He thermochronology and thermal modelling [PDF]

, 2016
The Atlas of Morocco is a continental rift developed during the Triassic-Jurassic and moderately inverted during the Cenozoic. The High Atlas south of Marrakech, with exposures of basement and Triassic early synrift deposits, has been viewed as a high ...
Domènech, Mireia, Stockli, Daniel F., Teixell Cácharo, Antonio   +2 more
core   +2 more sources

Long‐Term Storage of Meteoric Water in the Variscan Basement: Stable Isotope Constraints (δD–δ18O)

Terra Nova, Volume 38, Issue 2, Page 116-123, April 2026.
ABSTRACT F‐Ba‐Pb‐Zn (±Ag) deposits near the unconformity between the Armorican and Aquitaine basins formed by mixing surface waters and brines with fluid ascending from the basement. To better constrain the source of this fluid and the conditions of mixing, we analyzed the hydrogen (δDwater) and oxygen (δ18Owater) isotopic composition of water trapped ...
Loïc Bouat, Pierre Strzerzynski, Véronique Gardien   +2 more
wiley   +1 more source

PRE-DEVONIAN, BRABANTIAN DEFORMATION WITHIN THE SOUTHERN CONDROZ INLIER (RUISSEAU DES CHEVREUILS, DAVE, BELGIUM) [PDF]

, 2007
A
Debacker, Timothy, Vanmeirhaeghe, Jan
core   +1 more source