Mostrando 10 resultados de: 62
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Precambrian Research(12)
Gondwana Research(7)
Chemical Geology(5)
Lithos(5)
Journal of African Earth Sciences(4)
Chemical variations in clay minerals of the Archaean Barberton Greenstone Belt (South Africa)
ArticleAbstract: Four rock profiles of shales, carbonates and greywacke-type sediments were sampled from the mafic coPalabras claves:Autores:Alfred Kron̈er, Clauer N., Theofilos ToulkeridisFuentes:googlescopusCoexistence 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:scopusA mineralogical, chemical and isotopic investigation of shales from the barberton greenstone belt, South Africa, to constrain source materials and post-deposition evolution
ArticleAbstract: Major, trace and rare-earth elements were determined, together with their Rb-Sr, Sm-Nd and Pb-Pb isoPalabras claves:Autores:Alfred Kron̈er, Clauer N., Theofilos Toulkeridis, Todt W.Fuentes:googlescopusDevonian arc-related magmatism in the Tseel terrane of SW Mongolia: Chronological and geochemical evidence
ArticleAbstract: The Tseel terrane in the Gobi Desert of SW Mongolia consists of a composite crustal segment of imbriPalabras claves:Autores:Alfred Kron̈er, Badarch G., Demoux A., Hegner E.Fuentes:scopusDevonian to Permian plate tectonic cycle of the Paleo-Tethys Orogen in southwest China (I): Geochemistry of ophiolites, arc/back-arc assemblages and within-plate igneous rocks
ArticleAbstract: The Paleo-Tethys Orogen in southwest China is an amalgamation of continental terranes (Sibumasu, SimPalabras claves:Arc/back-arc assemblages, geochemistry, Ophiolite, Paleo-Tethys, Southwest China, Within-plate igneous rocksAutores:Alfred Kron̈er, Jian P., Liu D.Y., Sun X., Wang Y., Zhang Q., Zhang W.Fuentes:scopusCoupled evolution of back-arc and island arc-like mafic crust in the late-Neoproterozoic Agardagh Tes-Chem ophiolite, Central Asia: Evidence from trace element and Sr-Nd-Pb isotope data
ArticleAbstract: We report major-element, trace-element and isotopic data of volcanic rocks from the late-NeoproterozPalabras claves:Autores:Alfred Kron̈er, Jochum K., Kozakov I.K., Pfander J., Todt W.Fuentes:scopusCa. 2.9Ga granitoid magmatism in eastern Shandong, North China Craton: Zircon dating, Hf-in-zircon isotopic analysis and whole-rock geochemistry
ArticleAbstract: Eastern Shandong is one of the important early Precambrian areas in the North China Craton, where exPalabras claves:Eastern Shandong, Hf isotope, Juvenile crustal addition, Mesoarchean, TTG, zircon datingAutores:Alfred Kron̈er, Dong C., Liu D.Y., Liu S., Ma M., Wang S., Xie H., Xie S., Yusheng W., Zhou H.Fuentes:scopusCarbon isotope geochemistry and geochronological constraints of the Neoproterozoic Sirohi Group from northwest India
ArticleAbstract: The early Neoproterozoic carbonates of the Sirohi Group, northwestern India, were studied for geochrPalabras claves:Carbon isotopes, Neoproterozoic, Sirohi Group, Zircon geochronologyAutores:Alfred Kron̈er, Papineau D., Purohit R., Roy A.B., Sharma K.K.Fuentes:scopusCarboniferous and Cretaceous mafic-ultramafic massifs in Inner Mongolia (China): A SHRIMP zircon and geochemical study of the previously presumed integral "Hegenshan ophiolite"
ArticleAbstract: We present SHRIMP zircon ages and whole-rock geochemical data to identify mafic-ultramafic massifs oPalabras claves:Asthenospheric upwelling, Central Asian Orogenic Belt, Lithosphere extension, Mafic-ultramafic massifs, Orogenic quiescence, zirconAutores:Alfred Kron̈er, Jian P., Shi Y., Windley B.F., Yang W., Zhang L., Zhang W.Fuentes:scopusAge and Origin of Paleogene Granitoids from Western Yunnan Province, China: Geochemistry, SHRIMP Zircon Ages, and Hf-in-Zircon Isotopic Compositions
ArticleAbstract: We report geochemical data, SHRIMP zircon ages and Hf-in-zircon isotopic compositions for Cenozoic gPalabras claves:Hf-in-zircon isotopic compositions, Magmatism, Paleogene, SHRIMP zircon ages, western YunnanAutores:Alfred Kron̈er, Fan T., Shi Y., Wu Z., Yang Z.Fuentes:scopus