Mostrando 10 resultados de: 142
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Precambrian Research(31)
Gondwana Research(18)
Lithos(8)
Journal of African Earth Sciences(6)
Tectonophysics(6)
Characterization, provenance, and tectonic setting of Fig Tree greywackes from the Archaean Barberton Greenstone Belt, South Africa
ArticleAbstract: In this study, mineralogical and geochemical data, as well as Sr and Nd isotopic compositions of earPalabras claves:Archaean, Barberton greenstone belt, Greywackes, Provenance, Tectonic settingAutores:Alfred Kron̈er, Clauer N., Reimer T., Theofilos Toulkeridis, Todt W.Fuentes:googlescopusChronological constraints on the pre-Variscan evolution of the northeastern margin of the Bohemian Massif, Czech Republic
ArticleAbstract: New single zircon ages enable us to provide an evolutionary scenario for the Neoproterozoic to CambrPalabras claves:Autores:Alfred Kron̈er, Jaeckel P., Schulmann K., Štípská P.Fuentes:scopusChronology of the oldest supracrustal sequences in the Palaeoarchaean Barberton Greenstone Belt, South Africa and Swaziland
ArticleAbstract: Zircon age data for felsic metavolcanic rocks of the Sandspruit and Theespruit formations, the two oPalabras claves:Felsic volcanism, Greenstone belt, Palaeoarchaean, South Africa, Zircon geochronologyAutores:Alfred Kron̈er, Anhaeusser C.R., Geng H.Y., Hegner E., Hoffmann J.E., Liu D.Y., Wong J., Xie H., Yang J.Fuentes:scopusCoexistence of enriched and modern-like <sup>142</sup>Nd signatures in Archean igneous rocks of the eastern Kaapvaal Craton, southern Africa
ArticleAbstract: The short-lived 146Sm–142Nd isotope system is an important tool for tracing Hadean crust–mantle diffPalabras claves:142 Nd, Ancient Gneiss Complex, Barberton, Differentiation, Hadean, Kaapvaal CratoAutores:Alfred Kron̈er, Boyet M., Hoffmann J.E., Münker C., Schneider K.P.Fuentes:scopusComments on "Is the African plate stationary?"
ArticleAbstract: Burke and Wilson1 suggested that the African plate became stationary some 25 m.y. ago after having mPalabras claves:Autores:Alfred Kron̈erFuentes:scopusA back-arc palaeotectonic setting for the Augaro Neoproterozoic magmatic rocks of Western Eritrea
ArticleAbstract: The Augaro volcano-sedimentary assemblages of western Eritrea are part of the Neoproterozoic, N-S trPalabras claves:back-arc, Eritrea, Metavolcanic rocks, Neoproterozoic, Tectonic settingAutores:Alfred Kron̈er, Asmerom Y., Haile T., Teklay M., Watson J.Fuentes:scopusA new concept of continental construction in the Central Asian Orogenic Belt: (Compared to actualistic examples from the Western Pacific)
ArticleAbstract: A new concept of continental construction based on four main terms: (1) crustal growth, (2) crustalPalabras claves:Autores:Alfred Kron̈er, Gladkochub D.P., Kim J., Komiya T., Safonova I., Schulmann K., Seltmann R., Sun M., Xiao W.Fuentes:scopusA 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:scopusA ∼ 700 Ma Sm-Nd garnet-whole rock age from the granulite facies Central Kaoko Zone (Namibia): Evidence for a cryptic high-grade polymetamorphic history?
ArticleAbstract: Continental collision of the Kalahari and the Congo craton in Africa and the Rio de la Plata CratonPalabras claves:Garnet, Granulite facies, Kaoko Belt, Sm-NdAutores:Alfred Kron̈er, Jung S., Kröner S.Fuentes:scopusDetrital and igneous zircon ages for supracrustal rocks of the Kyrgyz Tianshan and palaeogeographic implications
ArticleAbstract: We report detrital zircon ages for Precambrian and early Palaeozoic metasediments from the TianshanPalabras claves:Detrital zircon age, Kyrgyzstan, Palaeo-Asian Ocean, Tarim craton, TianshanAutores:Alexeiev D.V., Alfred Kron̈er, Geng H.Y., Jeffries T., Khudoley A.K., Kiselev V.V., Mikolaichuk A.V., Seltmann R., Semiletkin S.A., Shu L., Wong J., Yamirka Rojas-Agramonte, Yang J.H.Fuentes:scopus