Results 31 to 40 of about 2,939 (195)

Transpressional tectonics and Carboniferous magmatism in the Limousin, Massif Central, France: Structural and ⁴⁰Ar/³⁹Ar investigations [PDF]

, 2007
New structural, microstructural, and 40Ar/39 Ar data from the NW Massif Central (France) provide additional constraints on the timing and tectonic setting of late Variscan granite magmatism.
Adams, Alexandrov, Arnaud, Arnaud, Aude Gébelin, Audrain, Autran, Bernard-Griffiths, Berthier, Berthé, Bertrand, Bitri, Bouchez, Boutin, Burg, Burg, Burg, Burg, Choukroune, Copeland, Costa, Costa, Cuney, Dahl, Davidson, Davidson, Dingley, Downes, Dumas, Duthou, Duthou, Echtler, Faure, Faure, Faure, Faure, Faure, Faure, Feist, Fernandez-Suarez, Freiberger, Gardien, Gardien, Grolier, Gumiaux, Gumiaux, Gébelin, Gébelin, Hames, Harrison, Heidelbach, Holliger, Hutton, Jover, Jégouzo, Krieger Lassen, Kruhl, Lafon, Lameyre, Lameyre, Lardeaux, Launeau, Le Breton, Le Carlier de Veslud, Ledru, Ledru, Ledru, Ledru, Ledru, Leloup, Lespinasse, Lloyd, Mainprice, Mattauer, Mattauer, Matte, Matte, Matte, Matte, Maurice Brunel, McClay, McDougall, Mercier, Mercier, Michel Faure, Mollier, Mollier, Monié, Moore, Mougeot, Ménard, Neumann, Neves, Nicolas Arnaud, Nicollet, Parrish, Patrick Monié, Petitpierre, Pin, Quenardel, Roig, Rolin, Rolin, Rolin, Sanderson, Santallier, Santallier, Scaillet, Scaillet, Schmidt, Schmitz, Schmitz, Segall, Swanson, Sylvester, Sylvester, Tikoff, Tikoff, Tikoff, Tommasi, Tullis, Turpin, Valle Aguado, Van Den Driesche, Van Den Driesche, Vanderhaeghe, Vidal, Virlogeux, Vissers   +128 more
core   +4 more sources

Late Pleistocene–Holocene denudation, uplift, and morphology evolution of the Armorican Massif (western Europe) [PDF]

Earth Surface Dynamics
Elevated Plio-Pleistocene coastal and marine markers in stable continental regions are commonly explained by a combination of eustatic sea-level variations and large-scale geological processes (e.g., crustal or mantle dynamics).
O. Malcles, S. Mazzotti, P. Vernant, V. Godard   +3 more
doaj   +1 more source

A Sb ± Au mineralizing peak at 360 Ma in the Variscan belt

BSGF - Earth Sciences Bulletin, 2019
40Ar/39Ar absolute dating on tobelite (an ammonium-rich white mica) has been performed in order to provide geochronological constraints on the Sb ± Au mineralization and hydrothermalism at the Saint-Aubin-des-Châteaux base metal-Sb ± Au occurrence ...
Pochon Anthony, Branquet Yannick, Gloaguen Eric, Ruffet Gilles, Poujol Marc, Boulvais Philippe, Gumiaux Charles, Cagnard Florence, Baele Jean-Marc, Kéré Inoussa, Gapais Denis   +10 more
doaj   +1 more source

Characterisation of chemically related asbestos amphiboles of actinolite: proposal for a specific differentiation in the diagram (Si apfu versus Mg/Mg+Fe2+)

International Journal of Metrology and Quality Engineering, 2018
Aggregates and rocks from quarries located in metropolitan France and New Caledonia, all likely to contain asbestiform amphiboles, were analysed by a routine laboratory (AD-LAB). Morphological observations were made using transmission electron microscopy
Misseri Maxime, Lahondere Didier
doaj   +1 more source

Palaeomagnetism of late Precambrian-Cambrian volcanics and intrusives from the Armorican Massif, France [PDF]

Geophysical Journal International, 1983
Samples of the keratophyre tuffs of Tréguier (640 ± 12 Myr) of the Upper Brioverian series, and the microgranite dykes of Loguivy (548 ± 24 Myr) have been collected from the north coast of Brittany, France. The samples were progressively demagnetized with AF and, predominantly, thermal methods.
Perigo, Russell, van Der Voo, Rob, Auvray, Bernard, Bonhommet, Norbert   +3 more
openaire   +2 more sources

Precocious maturation and smoltification in wild Atlantic salmon in the Armorican massif, France [PDF]

Aquaculture, 1985
In wild Atlantic salmon, Salmo salar, of Armorican rivers, precocious maturity occurred at
Baglinière, Jean-Luc, Maisse, Gérard
openaire   +4 more sources

Tertiary-Quaternary intra-plate magmatism in Europe and its relationship to mantle dynamics [PDF]

, 2006
Anorogenic intra-plate magmatism was widespread in Europe from early Tertiary to Recent times, extending west to east from Spain to Bulgaria, and south to north from Sicily to northern Germany. Magmatism is spatially and temporally associated with Alpine-
Downes, Hilary, Wilson, M.
core   +1 more source

A Lower Silurian (Aeronian) radiolarian assemblage from black cherts of the Armorican Massif (France)

, 2014
International audienceThe Chalonnes-sur-Loire outcrop is the most complete Llandovery section in the Ligerian domain (Armorican Massif, NW France); it displays a ca.
Dabard, Marie-Pierre, Danelian, Taniel, Ghienne, Jean-François, Tetard, Martin   +3 more
core   +4 more sources

Syntectonic crustal melting and high-grade metamorphism in a transpressional regime, Variscan Massif Central, France [PDF]

, 2009
Hot collisional orogens are characterized by abundant syn-kinematic granitic magmatism that profoundly affects their tectono-thermal evolutions. Voluminous granitic magmas, emplaced between 360 and 270 Ma, played a visibly important role in the evolution
Brunel, M, Gébelin, A, Roger, F
core   +3 more sources

Raman Line Scan Analyses and a New Hypothesis for the Formation of Anatase‐Hosting Microbialites: Study of the Stromatolites From Saint‐Jean‐de‐la‐Rivière, Cotentin, France

Journal of Raman Spectroscopy, EarlyView.
Micrometer analysis of millimeter lines of Raman spectra concludes in the association of anatase and graphitized organic matter (graphogen). The photosynthetic microorganisms at the origin of the microbialites produce O2, which is transformed by TiO2 into reactive species that, in turn, decompose the organic matter of the microorganisms. ABSTRACT Raman
Marie‐Paule Bassez
wiley   +1 more source