Results 21 to 30 of about 6,109 (226)

FORAMINIFERAL EVIDENCE FOR THE AGE OF EXOTIC BLOCKS WITHIN THE KOPRÍA MÉLANGE, RHODOS (GREECE)

Rivista Italiana di Paleontologia e Stratigrafia, 2005
Blocks embedded within the Kopría Mélange of western Rhodos yield well-preserved, abundant microfossils including early Middle Pennsylvanian fusulinacean faunas represented by species belonging to the genera Eoschubertella, Profusulinella ...
EDUARDO GARZANTI, JOHN R. GROVES, ROBERTO RETTORI   +2 more
doaj   +1 more source

The role of variscan shortening in the control of mineralization deposition in Tadaout-Tizi N’rsas mining district (Eastern Anti-Atlas, Morocco)

Bulletin of the Mineral Research and Exploration, 2020
The abundance of the NE-SW direction veins mineralized in barite, copper, lead and zinc in the Tadaout-Tizi n’Rsas (TTR) anticline make this area one of the principal vein fields in Tafilalet (easternmost border of the Eastern Anti-Atlas).
Mustapha AIT DAOUD, Abdelhafid ESSALHI, Mourad ESSALHI, Abdeslam TOUMMITE   +3 more
doaj   +1 more source

A few remarks on the Triassic paleogeography and geodynamic link between the Dinarides an the Serbo-Macedonian unit [PDF]

Geološki Anali Balkanskoga Poluostrva, 2020
A recently recycled tectonic hypothesis in which the Serbo-Macedonian Unit rifted off during Ladinian from the Dinarides is tested. The Triassic rifting, according to this concept, led to the opening and the formation of a northwestern branch of ...
Spahić Darko, Gaudenyi Tivadar
doaj   +1 more source

Petrogenetic constraints on the felsic vein magmatism in northern Portugal based on petrological and geochemical data

Comptes Rendus. Géoscience, 2021
Three of the largest granite porphyries of northern Portugal were studied to improve current knowledge on the regional felsic vein hypabyssal magmatism.
Oliveira, António João Teixeira, Martins, Helena Cristina Brites, da Silva, Helena Maria Sant’Ovaia Mendes   +2 more
doaj   +1 more source

⁴⁰Ar ∕ ³⁹Ar age constraints on the formation of fluid-rich quartz veins from the NW Rhenohercynian zone (Rursee area, Germany) [PDF]

Geochronology
A substantial part of the subsurface geology in northwestern and central Europe is defined by the late Palaeozoic Variscan Orogeny (∼ 350 Ma). Our focus is mainly on veining in anchimetamorphic sedimentary rocks affected by this orogeny.
A. A. O. Huseynov, J. Wijbrans, K. Kuiper, J. van der Lubbe   +3 more
doaj   +1 more source

Evidence for surface uplift of the Atlas Mountains and the surrounding peripheral plateaux: Combining apatite fission-track results and geomorphic indicators in the Western Moroccan Meseta (coastal Variscan Paleozoic basement) [PDF]

, 2010
This work represents an initial attempt to link the evolution of the topography in relation to the general tectonic framework of western Morocco. For this purpose, in a section of the Western Moroccan Meseta different tools are combined in order to ...
A. Azdimousa, A. Jabaloy, Ait Brahim, Ayarza, Babault, Barbero, Bargach, Baudin, Braun, Braun, British Oceanographic Data Centre, Burov, Chèvromont, D. Gómez-Ortiz, Davison, El Hadi, Fullea, Fullea-Urchulutegui, Ghorbal, Guiraud, Harmand, Hoepffner, Hurford, Hurtrez, J. Estupiñán, J.V. Pérez-Peña, Johansson, Ketcham, Ketcham, L. Asebriy, L. Barbero, Lifton, M. Vázquez, M.J. Rodríguez-Peces, Mahmood, Masek, Michard, Michard, Michard, Missenard, Mrini, O'Callaghan, Ohmori, Price, Pérez-Peña, Pérez-Peña, R. Tejero, Rayner, Reiners, Schumm, Strahler, Tahiri, Tarboton, Tassi, Teixell, Teixell, Teixell, Tejero, Zeyen   +58 more
core   +2 more sources

Molybdenite Re-Os dating of Mo-Th-Nb-REE rich marbles: pre-Variscan processes in Moldanubian Variegated Group (Czech Republic)

Geologica Carpathica, 2015
In an effort to contribute to the discussion concerning the age of rocks of the Moldanubian Variegated Group, we have undertaken Re-Os dating of molybdenite of banded carbonatite-like marbles (CLM) from the graphite mine Václav at Bližná (Southern ...
Drábek Milan, Stein Holly
doaj   +1 more source

Thermal evolution of a Variscan syn-orogenic intracontinental basin (Servoz basin, Western Alps): RSCM geothermometry and geochronology

Swiss Journal of Geosciences, 2022
The Variscan basement of the Aiguilles-Rouges massif (Western Alps) exposes the Servoz syncline which consists of a metavolcano-sedimentary sequence composed of (i) a volcanic unit of unknown age and origin, (ii) Early Carboniferous sedimentary series ...
Jonas Vanardois, Abdeltif Lahfid, Pierre Trap, Brice Lacroix, Françoise Roger, Laurent Guillou-Frottier, Didier Marquer, Jean-Louis Paquette, Jérémie Melleton   +8 more
doaj   +1 more source

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

, 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).
Fernández Suárez, Javier, García Acera, G., Gutiérrez-Alonso, Gabriel, Gärtner, Andreas, Hofmann, Mandy, López Carmona, Alicia, Martín Garro, J.   +6 more
core   +4 more sources

Geochemistry of the Görcsöny Ridge amphibolites (Tisza Unit, SW Hungary) and its geodynamic consequences

Geologia Croatica, 2014
The Görcsöny Ridge is part of the complicated Variscan metamorphic basement of the SW Tisza plate. It was penetrated by several wells, one of which (Baksa-2) explored 1200 m borecore available for petrological examination.
Tivadar M. Toth
doaj   +1 more source