Structure of a Variscan migmatite-granite transition zone (N Sardinia, Italy)
Journal of Maps, 2023 This paper presents the structural map of the Barrabisa Complex, an E-W ribbon-like migmatitic massif exposed in the northern part of Sardinia. The migmatites consist of metatexites and diatexites with variable melt proportion, grading in the central ...
M. De Luca +5 more
doaj +1 more source
Procesos anatécticos (LP-HT) y heterogeneidad litológica en el Complejo Migmatítico de Mindelo (NW Portugal) [PDF]
, 2014 The Mindelo Migmatitic Complex crops out in the coastal zone north of Porto (Portugal) and consists of a set of migmatitic and granitic lithologies. Field relationships, petrography, geochemistry and isotopic signature of the various lithologies allow ...
A. Dória +17 more
core +3 more sources
An analogue model of melt segregation and accumulation processes in the Earth’s crust [PDF]
Estonian Journal of Earth Sciences, 2007 An analogue experiment was carried out to model melt segregation from the solid rock matrix and its subsequent transport. Carbon dioxide gas and sand were used as analogue materials of crustal partial melt and host rock, respectively.
Soesoo, Alvar, Urtson, Kristjan
doaj
The top-to-the-southeast Sarzeau shear zone and its place in the late-orogenic extensional tectonics of southern Armorica [PDF]
, 2009 International audienceThis study presents new structural and monazite chemical U-Th/Pb geochronological constraints for the magmatic rocks of the Golfe du Morbihan area, in southern Brittany, south of the South Armorican shear zone (SASZ).
Augier, Romain +2 more
core +3 more sources
The South Millevaches Middle Carboniferous crustal melting and its place in the French Variscan Belt [PDF]
, 2009 International audienceSeveral episodes of crustal melting are now well identified in the Variscan French Massif Central. Middle Devonian (ca 385-375 Ma) migmatites are recognized in the Upper and Lower Gneiss Units involved in the stack of nappes.
Be Mezeme, Eugène +4 more
core +3 more sources
BSGF - Earth Sciences BulletinThe architecture of the crust in the French Massif Central (FMC) is described as a nappe stack composed, from top to bottom, of the Upper Gneiss Unit (UGU), the Lower Gneiss Unit (LGU), and the Para-Autochthonous Unit (PAU), which are intruded by ...
Passos do Carmo Caliméria +6 more
doaj +1 more source
Structural development of migmatites near Skåldö, southwest Finland [PDF]
Bulletin of the Geological Society of Finland, 1976 The migmatites of the Skåldö area show the effects of an extensive polyphase deformational history at relatively deep crustal levels during the Svecokarelian episode. Despite the complexity of the fold patterns it is possible to establish a deformational
A.M. Hopgood, D.R. Bowes, J. Addison
doaj +1 more source
Variscan metamorphism in the eastern Pyrenees and its relation to Late-Variscan magmatism revealed by U-Pb zircon dating: implications for the configuration of the Variscan Belt in the NE Iberian Peninsula [PDF]
, 2014 Variscan migmatites cropping out in the eastern Pyrenees were dated together with Late Variscan plutonic rocks. Upper Proterozoic–Lower Cambrian series were migmatized during a thermal episode that occurred in the interval 320–315 Ma coeval with the main
Aguilar, Carmen +3 more
core +3 more sources
The 1.79 Ga Särkilahti leucogranite – a horizontal magma layer below granulite-grade migmatites in SE Finland [PDF]
Bulletin of the Geological Society of Finland, 2019 The heterogeneous, peraluminous Särkilahti garnet-cordierite leucogranite occupies ~ 75 km2 area in Svecofennian granulite-grade terrain of SE Finland. Country rocks are metasedimentary garnet-cordierite-biotite migmatites with some orthopyroxenegarnet ...
Hannu Mäkitie +3 more
doaj +1 more source
Geosystems and GeoenvironmentThis paper documents the thrust tectonics in the Yaoundé Group using detailed field mapping and satellite imagery data. The litho-stratigraphic of the Matomb-Hegba area located W of the Pan-African Yaoundé series comprised two main metasedimentary units:
Victor Metang +6 more
doaj +1 more source