Results 41 to 50 of about 2,939 (195)

EARLY DEVONIAN BIOEROSION IN THE RADE DE BREST, ARMORICAN MASSIF, FRANCE [PDF]

Palaeontology, 2005
:  Abundant and diverse bioerosion trace fossils in the Lower Devonian of the Rade de Brest, France, were produced by boring ctenostomate bryozoans, polychaete annelids and algae. Two unidentifiable traces of encrusting sclerobionts are also considered. Two new taxa are described: Pinaceocladichnus cristatus ichnosp. nov.
A. BOTQUELEN, E. MAYORAL
openaire   +1 more source

Late Ordovician (post–Sardic) rifting branches in the North Gondwanan Montagne Noire and Mouthoumet massifs of southern France [PDF]

, 2015
Upper Ordovician–Lower Devonian rocks of the Cabrières klippes (southern Montagne Noire) and the Mouthoumet massif in southern France rest paraconformably or with angular discordance on Cambrian–Lower Ordovician strata.
Colmenar, Jorge, Monceret, Eric, Pouclet, André, Vizcaïno, Daniel, Álvaro-Blasco, José Javier   +4 more
core   +1 more source

Early Bronze Age Copper Circulation in the Guadalentín and Segura Valleys (SE Spain)

Archaeometry, EarlyView.
ABSTRACT Identifying the sources of copper used in Early Bronze Age metalwork from south‐east Spain is key to resolving a long‐running debate concerning centralized control, or lack thereof, over El Argar society's economic organisation. This study provides the first substantial integrated programme of EDXRF and MC‐ICP‐MS analyses for copper‐base ...
Dirk Brandherm, Ignacio Montero‐Ruiz
wiley   +1 more source

The Saint-Georges-sur-Loire olistostrome, a key zone to understand the Gondwana-Armorica boundary in the Variscan belt (Southern Brittany, France).

, 2004
In the southern part of the French Armorican massif, the Ligerian domain is located along the boundary between Gondwana and Armorica. Lithological, geochemical and structural data on the Saint-Georges-sur-Loire Unit, which is the northern part of the ...
Cartier, Carine, Faure, Michel
core   +4 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

Geochemistry and geochronology of the Palaeozoic mafic magmatism in the Codosera, Almadén and Guadalmez synclines, Central Iberian Zone, Spain

BSGF - Earth Sciences Bulletin
The Central Iberian Zone (CIZ) hosts several mafic suites showing variable geochemical affinities and signatures evolving through time. To provide a better understanding of magmatic processes, possible sources and the temporal evolution of the mafic ...
Campos-Rodríguez Héctor R., Gloaguen Eric, Tuduri Johann, Pochon Anthony, Iacono-Marziano Giada, Poujol Marc, Higueras Pablo, Virtanen Ville J., Sizaret Stanislas, Lorenzo Saturnino, Esbri José-María, Mollé Valentin   +11 more
doaj   +1 more source

Île Dumet (Armorican Massif, France) and its glaucophane eclogites: the little sister of Île de Groix [PDF]

European Journal of Mineralogy
Blueschist-facies rocks are scarce within the Variscan orogen. Two main occurrences are known in the Armorican Massif (NW France), at Île de Groix and Bois-de-Céné.
G. Godard, D. C. Smith, D. C. Smith, D. Jaujard, S. Doukkari, S. Doukkari   +5 more
doaj   +1 more source

Dating C/S Structures in Syntectonic Granites by In Situ Rb‐Sr Analyses on Muscovite

Terra Nova, Volume 38, Issue 2, Page 124-129, April 2026.
ABSTRACT The interplay of crystallisation, deformation and fluid–rock interactions makes deciphering geochronological information complex in syntectonic granites. In this study, we apply in situ Rb‐Sr analyses to selected samples from the Questembert Variscan syntectonic granite in Western France, which was emplaced along the South Armorican Shear Zone
Philippe Boulvais, Romain Tartèse
wiley   +1 more source

Origin and distribution of rare earth elements in various lichen and moss species over the last century in France [PDF]

, 2014
Rare earth elements (REE) are known to be powerful environmental tracers in natural biogeochemical compartments. In this study, the atmospheric deposition of REE was investigated using various lichens and mosses as well as herbarium samples from 1870 to ...
Agnan, Yannick, Probst, Anne, Séjalon-Delmas, Nathalie   +2 more
core   +4 more sources

Élaboration d'une typologie des formes de vallées. Application au bassin de la Maine (plateaux du Nord-Ouest de la France)

Physio-Géo, 2014
Valleys are rarely studied as specific relief elements. We propose a typology based on morphological data processing from a digital elevation model (DEM).
Ziad Alhaskeer, Jeannine Corbonnois, François Messner, François Laurent   +3 more
doaj   +1 more source