Mostrando 10 resultados de: 125
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Precambrian Research(20)
Journal of African Earth Sciences(10)
Gondwana Research(9)
South African Journal of Geology(8)
American Journal of Science(6)
Chronological 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:scopusChronological 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: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:scopusDetrital and xenocrystic zircon ages from Neoproterozoic to Palaeozoic arc terranes of Mongolia: Significance for the origin of crustal fragments in the Central Asian Orogenic Belt
ArticleAbstract: The Central Asian Orogenic Belt contains many Precambrian crustal fragments whose origin is unknown,Palabras claves:Central Asian Orogenic Belt, Detrital age, Microcontinent, Mongolia, Probability plot, Tarim, zirconAutores:Alfred Kron̈er, Demoux A., Donskaya T.V., Liu D.Y., Sun M., Wang W., Xia X., Yamirka Rojas-AgramonteFuentes:scopusDetrital footprint of the Mozambique ocean: U-Pb SHRIMP and Pb evaporation zircon geochronology of metasedimentary gneisses in eastern Madagascar
ArticleAbstract: The southern East African Orogen is a collisional belt where the identification of major suture zonePalabras claves:Detrital Zircons, Gondwana, Madagascar, Mozambique Ocean, Neoproterozoic, U-Pb SHRIMP geochronologyAutores:Alfred Kron̈er, Collins A.S., Fitzsimons I., Razakamanana T.Fuentes:scopusDetrital zircon geochronology of Jurassic sandstones of western Cuba (San Cayetano Formation): Implications for the Jurassic paleogeography of the NW Proto-Caribbean
ArticleAbstract: Clastic sediments of the early (?) to late Jurassic (Oxfordian) San Cayetano Formation of western CuPalabras claves:Autores:Alfred Kron̈er, Garcia-Delgado D.E., García-Gasco A., Liu D.Y., Pindell J., Wang Y., Yamirka Rojas-AgramonteFuentes:scopusDetrital zircons constraining basement age in a late Archaean greenstone belt of south-eastern Rajasthan, India
ArticleAbstract: We report a 207PbX206Pb age of ca. 3230 Ma age for detrital zircon grains from the quartzite of thePalabras claves:Autores:Alfred Kron̈er, Laul V., Roy A.B.Fuentes:scopus