Mostrando 10 resultados de: 20
Filtros aplicados
Publisher
Precambrian Research(5)
American Journal of Science(3)
Earth and Planetary Science Letters(2)
Geologische Rundschau(2)
Gondwana Research(2)
Área temáticas
Geología, hidrología, meteorología(9)
Ciencias de la tierra(7)
Ciencias de la Tierra de América del Norte(4)
Mineralogía(2)
Paleontología(2)
Objetivos de Desarrollo Sostenible
ODS 9: Industria, innovación e infraestructura(20)
ODS 17: Alianzas para lograr los objetivos(15)
ODS 8: Trabajo decente y crecimiento económico(13)
ODS 15: Vida de ecosistemas terrestres(8)
ODS 13: Acción por el clima(2)
Origen
scopus(20)
A precise UPb zircon age for the Archaean Pongola Supergroup volcanics in Swaziland
ArticleAbstract: UPb dating of single abraded zircon grains from a Pongola Supergroup rhyodacite sample collected inPalabras claves:Autores:Alfred Kron̈er, Hegner E., Hunt P.Fuentes:scopusAge and isotope geochemistry of the Archaean Pongola and Usushwana suites in Swaziland, southern Africa: a case for crustal contamination of mantle-derived magma
ArticleAbstract: The igneous rocks of the Pongola Supergroup (PS) and Usushwana Intrusive Suite (UIS) represent a casPalabras claves:Autores:Alfred Kron̈er, Hegner E., Hofmann A.W.Fuentes:scopusAge and magmatic history of the Antananarivo block, central Madagascar, as derived from zircon geochronology and ND isotopic systematics
ArticleAbstract: We report single zircon 207PbX/206Pb evaporation and SHRIMP ages, combined with whole-rock Nd isotopPalabras claves:Autores:Alfred Kron̈er, Brewer T.S., Collins A.S., Hegner E., Pidgeon R.T., Razakamanana T., Windley B.F.Fuentes:scopusAge, lithology and structural evolution of the c. 3.53 Ga Theespruit Formation in the Tjakastad area, southwestern Barberton Greenstone Belt, South Africa, with implications for Archaean tectonics
ArticleAbstract: A field and petrographic re-assessment of rocks from the Theespruit Formation near Tjakastad, southwPalabras claves:Archean, Barberton greenstone belt, Tectonics, Theespruit FormationAutores:Alfred Kron̈er, Connelly J., Hegner E., Van Kranendonk M.J.Fuentes:scopusGeneration of early Archaean felsic greenstone volcanic rocks through crustal melting in the Kaapvaal, craton, southern Africa
ArticleAbstract: High-potassium felsic volcanic rocks interlayered with basalt and komatiite in early Archaean greensPalabras claves:Barberton greenstone belt, Greenstone evolution, Nd-Hf isotopes, zircon ageAutores:Alfred Kron̈er, Hegner E., Hoffmann J.E., Liu D.Y., Münker C., Wong J., Wu F.Y., Xie H., Yusheng W.Fuentes:scopusGeneration of early Archaean grey gneisses through melting of older crust in the eastern Kaapvaal craton, southern Africa
ArticleAbstract: We report zircon ages, Hf-in-zircon isotopes as well as whole-rock geochemistry and Hf-Nd isotopic sPalabras claves:Grey gneiss, Hf-Nd isotopes, Kaapvaal Craton, Palaeoarchaean, Swaziland, zircon ageAutores:Alfred Kron̈er, Hegner E., Hoffmann J.E., Hofmann A., Liu D.Y., Münker C., Xie H., Yang J.H., Yusheng W.Fuentes:scopusGeochronology and Nd-Sr systematics of Lusatian granitoids: significance for the evolution of the Variscan orogen in east-central Europe
ArticleAbstract: A variety of pre-Variscan granitoids and two Variscan monzogranites occurring in the central and wesPalabras claves:Isotopic systematics, Lusatian granitoids, Variscan terranes, Zircon geochronologyAutores:Alfred Kron̈er, Bielicki K.H., Eidam J., Haase G., Hammer J., Hegner E., Krauss M.Fuentes:scopusHigh-temperature metamorphism and crustal melting at ca. 3.2 Ga in the eastern Kaapvaal craton, southern Africa
ArticleAbstract: The question of whether high-grade metamorphism and crustal melting in the early Archaean were assocPalabras claves:Grey gneiss, Hf-Nd isotopes, Kaapvaal Craton, Mesoarchaean, P-T reconstruction, Swaziland, zircon ageAutores:Alfred Kron̈er, Hegner E., Hoffmann J.E., Hofmann A., Kasper U., Liu D.Y., Liu X.M., Nagel T.J., Wong J., Xie H.Fuentes:scopusSHRIMP zircon dating and Nd isotopic systematics of Palaeoproterozoic migmatitic orthogneisses in the Epupa Metamorphic Complex of northwestern Namibia
ArticleAbstract: The Epupa Metamorphic Complex constitutes the southwestern margin of the Congo Craton and is exposedPalabras claves:Congo Craton, Epupa Complex, Namibia, Palaeoproterozoic, zircon datingAutores:Alfred Kron̈er, Hegner E., Hoffmann K.H., Wingate M.T.D., Yamirka Rojas-AgramonteFuentes:scopusLatest precambrian (Cadomian) zircon ages, Nd isotopic systematics and P-T evolution of granitoid orthogneisses of the Erzgebirge, Saxony and Czech Republic
ArticleAbstract: Single zircons from two orthogneiss complexes, the 'Grey Gneiss' and 'Red Gneiss', the lowermost tecPalabras claves:Cadomian, Erzgebirge, geochronology, Nd model ages, Pre-Variscan, zirconAutores:Alfred Kron̈er, Bergner R., Frischbutter A., Hegner E., Hofmann J., Willner A.P.Fuentes:scopus