Mostrando 10 resultados de: 19
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Gondwana Research(5)
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scopus(19)
Chronological constraints on the pre-orogenic history, burial and exhumation of deep-seated rocks along the eastern margin of the Variscan orogen, Bohemian Massif, Czech Republic
ReviewAbstract: Key lithological units of the high-grade eastern margin of the Bohemian Massif were dated using thePalabras claves:Autores:Alfred Kron̈er, Hegner E., Konopásek J., Lexa O., Schulmann K., Štípská P., Wendt I.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:scopusCa. 750-1100 Ma magmatic events and Grenville-age deformation in Sri Lanka: Relevance for Rodinia supercontinent formation and dispersal, and Gondwana amalgamation
ArticleAbstract: Large volumes of ∼880-1100 Ma calc-alkaline granitoid rocks in the Wanni and Vijayan crustal provincPalabras claves:Gondwana, High-grade metamorphism, Island-arc formation, Nd isotopes, Rodinia, Zircon geochronologyAutores:Alfred Kron̈er, Hegner E., Kehelpannala K.V.W.Fuentes:scopusAccretionary growth and crust formation in the Central Asian Orogenic Belt and comparison with the Arabian-Nubian shield
Conference ObjectAbstract: The Central Asian Orogenic Belt is one of the largest accretionary terrains on Earth and records a cPalabras claves:Accretion, Arabian-Nubian Shield, Central Asia, Kazakhstan, Mongolia, Zircon geochronologyAutores:Alfred Kron̈er, Badarch G., Demoux A., Gruschka S., Hegner E., Jahn B.m., Khain E.V., Tomurtogoo O., Windley B.F., Wingate M.T.D.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:scopusHas the East African Orogen Played Any Role in the Formation and Breakup of the Supercontinent Rodinia and the Amalgamation of Gondwana? New Evidence from Field Relationship and Isotopic Data
ArticleAbstract:Palabras claves:Autores:Alfred Kron̈er, Collins A.S., Hegner E., Kehelpannala K.V.W., Muhongo S., Willner A.P.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:scopusReassessment of continental growth during the accretionary history of the Central Asian Orogenic Belt
ReviewAbstract: We argue that the production of mantle-derived or juvenile continental crust during the accretionaryPalabras claves:Central Asian Orogenic Belt, Crustal growth, Crustal reworking, Juvenile crust, Nd-Hf isotopesAutores:Alexeiev D.V., Alfred Kron̈er, Armstrong R., Belousova E.A., Cai K., Degtyarev K.E., Dolgopolova A., Hegner E., Hoffmann J.E., Kovach V.P., Rytsk E., Seltmann R., Sun M., Tong Y., Wang T., WILDE S.A., Wong J.Fuentes:scopus