The Lomagundi-Jatuli carbon isotopic event recorded in the marble of the Tandilia System basement, Río de la Plata Craton, Argentina [PDF]
, 2019 The “Lomagundi-Jatuli event” corresponds to the most important δ13C positive anomaly (≥5‰) globally reported in Palaeoproterozoic marine carbonates (between ∼2.30 and 2.06 Ga).
Ballivian Justiniano, Carlos Alberto +6 more
core +1 more source
Petrology, geochemistry, and geochronology of the leucogranites in southernmost Finland [PDF]
Bulletin of the Geological Society of FinlandIn the southernmost part of the Svecofennian province in Finland, leucogranites and migmatites stemming from both igneous and sedimentary protoliths reflect the complex magmatic history of the Svecofennian orogeny between 1.89 and 1.82 Ga.
Anna Saukko +4 more
doaj +1 more source
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
Three-dimensional distribution of primary melt inclusions in garnets by X-ray microtomography [PDF]
, 2018 open6X-ray computed microtomography (X-mu CT) is applied here to investigate in a non-invasive way the three-dimensional (3D) spatial distribution of primary melt and fluid inclusions in gamets from the metapeitic enclaves of El Hoyazo and from the ...
core +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
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
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
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 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 +2 more sources
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