Results 11 to 20 of about 8,012 (220)
Geosciences, 2022 In recent decades, constraining the timing of shear activity has been one of the main topics of research about the tectono-metamorphic evolution of orogenic belts.
Rodolfo Carosi +5 more
doaj +1 more source
Geophysical Monograph Series, Page 169-190., 2021 Exploring the links between Large Igneous Provinces and dramatic environmental impact
An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Nasrrddine Youbi +9 more
wiley +1 more source
The Variscan belt: correlations and plate dynamics [PDF]
International Journal of Earth Sciences, 2017 The new series of international conferences focused on thePalaeozoic evolution of the European lithosphere startedin 2007 in Orléans, followed by the successful meeting in2012 in Sassari, and the last one in 2015 in Rennes. Thefirst conference was dedicated to mechanical aspects of theVariscan orogeny and resulted in a highly successful SpecialIssue of
Pitra, Pavel +3 more
openaire +2 more sources
Geologica Acta, 2020 The dyke of the Papôa volcanic breccia cross-cutting the Lower Jurassic sequence of the Lusitanian Basin (West Iberia) contains granitic xenoliths. In this study, for the first time, U-Th-Pb zircon analysis of two xenoliths yielded 298±4Ma for biotite ...
M.F. Pereira +3 more
doaj +3 more sources
The Variscan Belt of Western Europe 1
, 2023 This chapter deals with the metamorphic and structural aspects of the principal events responsible for the early architecture of the French Variscan belt, before the tectono-metamorphic events coeval with its late- and post-orogenic dismantling. The Variscan metamorphic units are mainly located in the “Moldanubian” domain of the belt, corresponding to ...
Yoann Denèle, Julien Berger
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Journal of Maps, 2022 This study aims to decipher the structural evolution of a sector of the Nappe Zone in the Sardinian Variscan Belt. We investigated the Barbagia Thrust between the Meana Sardo Unit (belonging to the External Nappe Zone) in the footwall and the Barbagia ...
A. Petroccia +3 more
doaj +1 more source
BSGF - Earth Sciences Bulletin, 2022 Based on new structural, petrological and U-Th-Pb geochronological data, a reappraisal of the Variscan tectono-metamorphic history of the Pelvoux Massif (External Crystalline Massif, French Alps) is proposed with the aim to understand the flow pattern ...
Fréville Kévin +7 more
doaj +1 more source
GSA Bulletin, 2021 Abstract Bulk rock geochemistry and sensitive high-resolution ion microprobe zircon geochronology of igneous and metaigneous rocks of the Évora gneiss dome, located to the north of the reworked Rheic Ocean suture zone in the southwest Iberian Variscan belt, reveal a succession of magmatic and melting events lasting ~30 m.y.
Carmen Rodríguez +4 more
openaire +5 more sources
BSGF - Earth Sciences Bulletin, 2022 Rare-element granites and pegmatites represent important sources of raw materials for “clean, green and high technologies”, such as lithium and tantalum, for example.
Melleton Jérémie +5 more
doaj +1 more source
Late Carboniferous paleoelevation of the Variscan Belt of Western Europe [PDF]
Earth and Planetary Science Letters, 2021 We present the first stable isotope paleoaltimetry estimates for the hinterland of the eroded Variscan Belt of Western Europe based on the hydrogen isotope ratios of muscovite from syntectonic leucogranites that have been emplaced at ∼315 Ma. We focus on the Limousin region (Western Massif Central, France) where peraluminous granites are spatially ...
Dusséaux, Camille +3 more
openaire +3 more sources