Results 11 to 20 of about 28,696 (234)

Devonian geodynamic evolution of the Variscan Belt, insights from the French Massif Central and Massif Armoricain [PDF]

open access: yesTectonics, 2008
The Paleozoic French Variscan Belt in Massif Central and Massif Armoricain is a collision belt that provides a good example of a suture zone where ophiolites are rare, and the frontal (i.e., the magmatic arc) part of the upper plate is not present. In the lower plate (or Gondwana), the continental rocks are subdivided into an Upper Gneiss Unit (UGU ...
Faure, Michel   +5 more
openaire   +4 more sources

The tungsten-gold veins of Bonnac (French Massif central): new constraints for a Variscan granite-related genesis

open access: yesBSGF - Earth Sciences Bulletin, 2021
In the Brioude-Massiac district (French Massif Central: FMC), a network of W-As-Bi-Au quartz veins constitutes the Bonnac deposit, where tungsten is the major economic element, together with high-grade gold (up to 15 g/t Au).
Cheval-Garabédian Florent   +3 more
doaj   +1 more source

Biodiversity and Environmental Factors Structuring Diatom Assemblages of Mineral Saline Springs in the French Massif Central

open access: yesDiversity, 2023
Springs are abundant and present worldwide and are among the most threatened ecosystems on Earth. The main aim of this study was to evaluate the biodiversity of seventy-nine (79) mineral saline springs situated in the French Massif Central, focusing on ...
Aude Beauger   +6 more
doaj   +1 more source

Snow cover as a morphogenic agent determining ground climate, landforms and runoff in the Valdecebollas massif, Cantabrian Mountains [PDF]

open access: yes, 2020
Producción CientíficaLas nevadas son importantes eventos meteorológicos que afectan al ambiente físico de la Montaña Cantábrica. Este trabajo analiza los efectos sobre varios elementos como el relieve, el clima del suelo y la hidrología nival. El régimen
Pisabarro Pérez, Alfonso
core   +2 more sources

Insights on the Permian tuff beds from the Saint-Affrique Basin (Massif Central, France): an integrated geochemical and geochronological study

open access: yesComptes Rendus. Géoscience, 2023
The Permian marks the transition between the end of the accretion of the supercontinent Pangea and the beginning of its dislocation. In the Eastern Pangea intertropical domain (i.e. the present-day Western Europe), the late-Paleozoic (i.e.
Poujol, Marc   +6 more
doaj   +1 more source

Lateritic paleoweathering profiles in French Massif Central: Paleomagnetic datings [PDF]

open access: yesJournal of Geophysical Research: Solid Earth, 2010
Geological records of the history of ancient land surfaces are scarce and often fragmented by unconformities. Determining the age of these surfaces has long been the limiting factor in correlating continental paleosurfaces with marine basin deposits. Age determination of the weathering product of continental paleosurfaces as well as weathered material ...
Ricordel-Prognon, Caroline   +3 more
openaire   +3 more sources

Prograde and retrograde P–T evolution of a Variscan high-temperature eclogite, French Massif Central, Haut-Allier

open access: yesBSGF - Earth Sciences Bulletin, 2020
The P–T evolution of a mafic eclogite sample from the Haut-Allier was studied in order to constrain the dynamic of the Variscan subduction in the eastern French Massif Central.
de Hoÿm de Marien Luc   +3 more
doaj   +1 more source

The South Millevaches Middle Carboniferous crustal melting and its place in the French Variscan Belt [PDF]

open access: yes, 2009
International audienceSeveral episodes of crustal melting are now well identified in the Variscan French Massif Central. Middle Devonian (ca 385-375 Ma) migmatites are recognized in the Upper and Lower Gneiss Units involved in the stack of nappes.
Be Mezeme, Eugène   +4 more
core   +3 more sources

Picks in the Fabric of a Polyploidy Complex: Integrative Species Delimitation in the Tetraploid Leucanthemum Mill. (Compositae, Anthemideae) Representatives

open access: yesBiology, 2023
Based on the results of a preceding species-delimitation analysis for the diploid representatives of the genus Leucanthemum (Compositae, Anthemideae), the present study aims at the elaboration of a specific and subspecific taxonomic treatment of the ...
Christoph Oberprieler   +2 more
doaj   +1 more source

Genetic diversity and population structure of the Eurosian otte (Lutra lutra) in France [PDF]

open access: yes, 2016
During the last century, the Eurasian otter (Lutra lutra) suffered a dramatic decline in Europe. In France, the same pattern of sharp decline was observed with local extinctions in many regions. Before the recolonisation process, two main populations
Geboes, Anne-Laure   +4 more
core   +1 more source

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