Results 21 to 30 of about 4,105 (193)

Zircon age of vaugnerite intrusives from the Central and Southern Vosges crystalline massif (E France): contribution to the geodynamics of the European Variscan belt

open access: yesBSGF - Earth Sciences Bulletin, 2020
To provide a better picture of the active geodynamics along the Variscan suture zones during the late collisional stage (particularly regarding the evolution of the orogenic system towards HT conditions), we focused here on vaugnerites, which consist of ...
Guillot François   +5 more
doaj   +1 more source

The concealed Caledonide basement of eastern England and the southern North Sea : a review [PDF]

open access: yes, 1995
Field mapping, analysis of borehole core and studies of geophysical potential field and seismic data can be used to demonstrate the existence of a number of distinct crustal blocks within Eastern Avalonia beneath eastern England and the southern North ...
England, R., Lee, Mick, Pharaoh, Tim
core   +1 more source

Poly-Orogenic Melting of Metasedimentary Crust From a Granite Geochemistry and Inherited Zircon Perspective (Southern Calabria-Peloritani Orogen, Italy)

open access: yesFrontiers in Earth Science, 2019
Inherited zircon ages and geochemical features of late Cadomian and late Variscan granitoids from the north-eastern Peloritani Mountains (NE Sicily) and the western Aspromonte Massif (SW Calabria) shed new light on the sources and processes involved in ...
Patrizia Fiannacca   +3 more
doaj   +1 more source

Mineral chemistry of late Variscan gabbros from central Spain: constraints on crystallisation processes and nature of the parental magmas [PDF]

open access: yes, 2015
© 2016. Universidad Complutense de Madrid. The commercial rights of the printed and online versions of Journal of Iberian Geology are property of the Universidad Complutense de Madrid (UCM) and the Consejo Superior de Investigaciones CientÍficas (CSIC),
Jeffries, T   +3 more
core   +3 more sources

Multistage development of a hydrothermal W deposit during the Variscan late-orogenic evolution: the Puy-les-Vignes breccia pipe (Massif Central, France)

open access: yesBSGF - Earth Sciences Bulletin, 2021
The Puy-les-Vignes W deposit, located in the northwestern French Massif Central (FMC), is a rare occurrence of a wolframite-mineralized hydrothermal breccia pipe hosted in high-grade metamorphic gneisses.
Harlaux Matthieu   +10 more
doaj   +1 more source

Carboniferous and Permian magmatism in Scotland [PDF]

open access: yes, 2004
Extensional tectonics to the north of the Variscan Front during the Early Carboniferous generated fault-controlled basins across the British Isles, with accompanying basaltic magmatism.
Fitton, J.G.   +4 more
core   +1 more source

Processes and Sources during Late Variscan Dioritic–Tonalitic Magmatism: Insights from Plagioclase Chemistry (Gęsiniec Intrusion, NE Bohemian Massif, Poland) [PDF]

open access: yesJournal of Petrology, 2008
The Ge siniec Intrusion (Strzelin Massif, East Sudetes) ( 307^290 Ma) is composed predominantly of dioritic to tonalitic rocks with Sr/Sr ratios ranging from 0 7069 to 0 7080 and eNd1⁄4 ^3 1 to ^4 2, emplaced as post-collisional magmas following theVariscan orogeny.
Pietranik, A., Waight, Tod Earle
openaire   +2 more sources

Mantle evolution in the Variscides of SW England: geochemical and isotopic constraints from mafic rocks [PDF]

open access: yes, 2016
This is the author accepted manuscript. The final version is available from Elsevier via the DOI in this record.The geology of SW England has long been interpreted to reflect Variscan collisional processes associated with the closure of the ...
Braid, JA   +4 more
core   +1 more source

40Ar/39Ar phlogopite geochronology of lamprophyre dykes in Cornwall, UK: new age constraints on Early Permian post-collisional magmatism in the Rhenohercynian Zone, SW England [PDF]

open access: yes, 2015
Journal of the Geological Society (2015), http://jgs.lyellcollection.org/content/early/2015/06/03/jgs2014-151. Copyright © Geological Society of London 2015The spatial and temporal association of post-collisional granites and lamprophyre dykes is a ...
Archibald, Doug A.   +5 more
core   +1 more source

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

open access: yes, 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   +128 more
core   +4 more sources

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