Early Palaeozoic crustal melting in an extensional setting: petrological and Sm–Nd evidence from the Izera granite-gneisses, Polish Sudetes

  title={Early Palaeozoic crustal melting in an extensional setting: petrological and Sm–Nd evidence from the Izera granite-gneisses, Polish Sudetes},
  author={Teresa Oberc-Dziedzic and Christian Pin and Ryszard Kryza},
  journal={International Journal of Earth Sciences},
The Izera Block in the West Sudetes, which is composed of granites, gneisses (and transitional granite-gneisses) and minor mica schists, is one of the largest outcrops of Early Palaeozoic (ca. 500 Ma) metagranitoid rocks in the basement units of the Variscides of Central Europe. The Izera granites show S-type features: magmatic cordierite, relict garnet and sillimanite, lack of mafic enclaves, and absence of coexisting tonalites and diorites. The paucity of pegmatites indicates that the… 
Petrogenesis of continental mafic dykes from the Izera Complex, Karkonosze-Izera Block (West Sudetes, SW Poland)
The Izera Complex (West Sudetes) contains widespread bodies of metagabbro, metadolerite and amphibolite (the Izera metabasites), and less abundant dykes of weakly altered dolerites, emplaced in a
Interaction of the lithospheric mantle and crustal melts for the generation of the Horoz pluton (Niğde, Turkey): whole-rock geochemical and Sr–Nd–Pb isotopic evidence
The Horoz pluton includes granitic and granodioritic rocks, with widespread mafic microgranular enclaves (MMEs). Petrochemically, the rocks of the pluton show calc-alkaline to shoshonitic and
Magmatic and post-magmatic phenomena in the Karkonosze granite and its metamorphic envelope (West Sudetes, SW Poland)
Mineralogical studies of the Karkonosze granite (ca. 322–312 Ma) and its surroundings in West Sudetes (SW Poland) have provided data on Nb-Ta-REE minerals from pegmatites in the NE part of the pluton
Petrology and geochemistry of mafic plugs associated with the Semri Group of the Vindhyan Supergroup in the eastern part of the Son valley, Central India: Implications for bimodal volcanism
The intrabasinal felsic pyroclastics and rhyolite in the lower part of Semri Group of Vindhyan Supergroup are intruded by 3–11 m thick mafic plugs. These mafic bodies intrude Kajrahat Limestone of
Early Carboniferous (Viséan) emplacement of the collisional Kłodzko–Złoty Stok granitoids (Sudetes, SW Poland): constraints from geochemical data and zircon U–Pb ages
Sensitive high-resolution ion microprobe zircon U–Pb dating and geochemical data of igneous rocks from the composite Kłodzko–Złoty Stok (KZS) Granite Pluton, Sudetic Block, indicate that the
Refining the granite, gneiss and schist interrelationships within the Lusatian–Izera Massif, West Sudetes, using SHRIMP U-Pb zircon analyses and new geologic data
The eastern part of the Lusatian–Izera Massif, West Sudetes, comprises different types of gneissose rocks, collectively known as the Izera gneisses, with a subordinate component of petrographically
The Orthogneiss and Schist Complex of the Karkonosze-Izera Massif (Sudetes, SW Poland): U-Pb SHRIMP zircon ages, Nd-isotope systematics and protoliths
Many basement units of the Variscan orogen that are exposed in the Sudetes, SW Poland, comprise widespread ~500 Ma orthogneisses and associated mica schists, the latter often of unknown age and
Ordovician passive continental margin magmatism in the Central-European Variscides: U–Pb zircon data from the SE part of the Karkonosze-Izera Massif, Sudetes, SW Poland
Approximately 500-Ma-old orthogneisses are widespread in the eastern part of the Variscan belt and are commonly interpreted to have intruded mica-schist series of assumed Neoproterozoic age. New
Syntectonic Lower Ordovician migmatite and post-tectonic Upper Viséan syenite in the western limb of the Orlica-Śnieżnik Dome, West Sudetes: U-Pb SHRIMP data from zircons
In the Orlica-Śnieznik Dome, the West Sudetes, metagranites of 515-480 Ma age occur as coarse-grained augen gneisses (~ Śnieznik type) in the middle of the dome, whereas fine-grained, often
Amphibolites from the Szklarska Poręba hornfels belt, West Sudetes, SW Poland: magma genesis and implications for the break-up of Gondwana
  • S. Ilnicki
  • Geology
    International Journal of Earth Sciences
  • 2011
Amphibolites from the Szklarska Poręba hornfels belt (northern part of the Karkonosze-Izera Massif) represent rocks of alkali-basalt composition metamorphosed during Variscan times. Despite the


Geochemistry, single zircon ages and Sm–Nd systematics of granitoid rocks from theGóry Sowie (Owl Mts), Polish West Sudetes: evidence for earlyarc-related plutonism
Granitoid gneisses as well as their migmatitic and anatectic derivates were investigated from theGóry Sowie (Owl Mts) Massif of SW Poland in the central West Sudetes. The gneisses and migmatites
Geochronology and Nd-Sr systematics of Lusatian granitoids: significance for the evolution of the Variscan orogen in east-central Europe
AbstractA variety of pre-Variscan granitoids and two Variscan monzogranites occurring in the central and western parts of the Lusatian Granodiorite Complex (LGC), Saxonia were dated by the single
Palaeozoic terrane amalgamation in Central Europe: a REE and Sm-Nd isotope study of the pre-Variscan basement, NE Bohemian Massif
Abstract The West Sudetes, NE Bohemian Massif, comprises several suspect terranes accreted to the margins of Laurussia during Variscan orogenesis. Whole rock REE and Sm-Nd isotope data for seven
Meta-igneous (non-gneissic) tonalites and quartz-diorites from an extensive ca. 3800 Ma terrain south of the Isua supracrustal belt, southern West Greenland: constraints on early crust formation
Abstract In the Itsaq Gneiss Complex south of the Isua supracrustal belt (West Greenland) some areas of early Archaean tonalite and quartz-diorite are non-gneissic, free of pegmatite veins, and in
Single zircon ages and whole-rock Nd isotopic systematics of early Palaeozoic granitoid gneisses from the Czech and Polish Sudetes (Jizerské hory, Krkonoše Mountains and Orlice-Sněžník Complex)
Granitoid orthogneisses make up the predominant rock type in the West Sudetes from Jizerské hory in the NW to the Orlické hory and Sněžník Mountains in the SE. These generally strongly foliated
Chemical characteristics and genesis of the quartz-feldspathic rocks in the Archean crust of Greenland
A total of 108 samples of meta-tonalites, metagranodiorites, granites and meta-tholeiites representing groups of Early to Late Archean age and different metamorphic history from SW and SE Greenland
Early Palaeozoic rift‐related magmatism in Variscan Europe: fragmentation of the Armorican Terrane Assemblage
Early Palaeozoic bimodal rift‐related magmatism is widespread throughout much of the Variscides of Europe. It is traceable from the Polish Sudetes to NW Iberia. Granitic plutonism generally predates
Geochemical evidence for progressive, rift-related early Palaeozoic volcanism in the western Sudetes
The volcanigenic rocks of the Kaczawa Mts (western Sudetes, Poland), in the eastern Variscides, show changing geological and geochemical evolution during early Palaeozoic time. The lower part of the
Geochemistry and tectonic environment of Ordovician meta-igneous rocks in the Rudawy Janowickie Complex, SW Poland
A bimodal suite of Ordovician metavolcanic rocks in the Rudawy Janowickie Mountains and the Lasocki Ridge (Sudetic region, SW Poland) is dominated by voluminous epidote amphibolites and greenschists