Results 81 to 90 of about 2,939 (195)

Precambrian protoliths and Early Paleozoic magmatism in the French Massif Central: U–Pb data and the North Gondwana connection in the west European Variscan belt [PDF]

open access: yes, 2010
International audienceU–Pb geochronological data were collected on zircon by LA-MC-ICP-MS on orthogneiss and paragneiss from the Limousin area in the French Massif Central (FMC), in order to investigate the connection between the west European Variscan ...
Cocherie, Alain   +3 more
core   +4 more sources

Timing of Contractional Stress Propagation, From the Pyrenean Orogen to the Intraplate Domain, Evidenced by U‐Pb Dating of Syn‐Kinematic Calcite

open access: yesTectonics, Volume 44, Issue 2, February 2025.
Abstract The Mediterranean region provides a natural laboratory for studying complex deformation resulting from body forces and interactions between the convergence of the Africa and Eurasia plates since the Cretaceous. These interactions led to the formation of a mosaic of basins and orogenic domains, whose intrinsically complex evolution over time is
Agathe Jullien‐Sicre   +5 more
wiley   +1 more source

The Hercynian structure of the Catalonian Coastel Ranges (NE Spain) [PDF]

open access: yes, 1990
In the Catalonian Coastal Ranges, Paleozoic sedimentary and meta-sedimentary rocks crop out in several areas, intruded by late tectonic Hercynian granitoids and separated by Mesozoic and Tertiary cover sediments.
Durán, H., Julivert, Manuel
core   +1 more source

Fluid inclusions in magmatic ilmenite record degassing in basic magmas

open access: yesCommunications Earth & Environment
Magmatic volatile phases play a major role in igneous systems, but indirect sampling of the magmatic fluid, especially for basic magmas, remains challenging to document.
Anthony Pochon   +10 more
doaj   +1 more source

Variations écologiques et chorologiques de la végétation macrophytique des rivières acides du Massif armoricain et des Vosges du Nord (France) [PDF]

open access: yes, 1990
La végétation macrophytique des rivières acides d'Europe occidentale présente une grande unité, marquée par la constance d'un ensemble floristique de base, dont certaines espèces (Callitriche hamulata, Myriophyllum alterniflorum, Potamogeton ...
Haury, J., Muller, S.
core   +1 more source

SOIL SPATIAL DISTRIBUTION IN THE ARMORICAN MASSIF, WESTERN FRANCE: EFFECT OF SOIL-FORMING FACTORS

open access: yesSoil Science, 2003
Soil spatial distribution, i.e. the spatial distribution of soils within landscapes, is difficult to predict because numerous processes operate simultaneously, but variably, over time. Quantifications of large areas with an acceptable degree of precision and low in cost require the development of specific methods making the best possible use of ...
/Chaplot, Vincent   +4 more
openaire   +2 more sources

A reassessment of the Lochkovian, Lower Devonian, benthic faunas and palynomorphs from the Dornes region, southern Central Iberian Zone, Portugal [PDF]

open access: yes, 2008
A revision of benthic faunas and palynomorphs previously described from the Dornes syncline, southern Central Iberian Zone, Portugal, complemented with recent research, shows that the Serra de Luação Formation is of Lochkovian age. The systematics of
Gourvennec, Rémy   +7 more
core  

Zircon and apatite U-Pb geochronology of the Paleoproterozoic (Eburnean) basement and late Neoproterozoic (Pan-African) metamorphism and magmatism from Port-Béni, Armorican Massif (France)

open access: yesBSGF - Earth Sciences Bulletin
By re-examining the historical outcrops of Port-Béni located in the Trégor unit of the North Armorican Cadomian belt, the present work delivers four new ages that provide additional constraints on the Proterozoic history of northern Brittany.
Poujol Marc   +3 more
doaj   +1 more source

Nanoscale Secondary Ion Mass Spectrometry determination of the water content of staurolite. [PDF]

open access: yesRapid Commun Mass Spectrom, 2022
Azevedo-Vannson S   +7 more
europepmc   +1 more source

Silurian-Permian palaeocontinental reconstructions and circum-Atlantic tectonics [PDF]

open access: yes, 1988
On the basis of the palaeomagnetic record, supplemented by constraints provided by faunal and tectonic information, reconstructions involving Laurentia, Baltica, Gondwana and numerous continent-like fragments and terranes within the circum-Atlantic ...
Kent, Dennis V., Keppie, J. D.
core   +2 more sources

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