Mostrando 10 resultados de: 11
Filtros aplicados
Publisher
Precambrian Research(2)
Chemical Geology(1)
Contributions to Mineralogy and Petrology(1)
International Journal of Earth Sciences(1)
Journal of African Earth Sciences(1)
Área temáticas
Geología, hidrología, meteorología(8)
Mineralogía(4)
Ciencias de la tierra(2)
Geología económica(2)
Ciencias de la Tierra de América del Norte(1)
Crustal age domains in the Kibaran belt of SW-Uganda: Combined zircon geochronology and Sm-Nd isotopic investigation
ArticleAbstract: Combination of geochemistry, Nd mean crustal residence ages and single zircon ages reveal distinct pPalabras claves:Granites, Kibaran, Suspect terranes, Uganda, zirconAutores:Buchwaldt R., Theofilos Toulkeridis, Todt W., Ucakuwun E.K.Fuentes:googlescopusA 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:googlescopusAge of Palaeozoic granites and metamorphism in the Tuvino-Mongolian Massif of the Central Asian Mobile Belt: Loss of a Precambrian microcontinent
ArticleAbstract: The Tuvino-Mongolian Massif (TMM) was previously interpreted as a Precambrian block within the CentrPalabras claves:Central Asian Mobile Belt, Granitoids, High-grade metamorphism, Siberia, Tuvino-Mongolian Massif, U-Pb zircon geochronologyAutores:Alfred Kron̈er, Bibikova E.V., Kotov A., Kovach V.P., Kozakov I.K., Nutman A., Salnikova E.B., Todt W., Yakovleva S.Fuentes:scopusPetrology, geochronology, and tectonic implications of c. 500 Ma metamorphic and igneous rocks along the northern margin of the Central Asian Orogen (Olkhon terrane, Lake Baikal, Siberia)
ArticleAbstract: A significant portion of the continental crust of northern Eurasia is thought to have formed duringPalabras claves:Autores:Alfred Kron̈er, Donskaya T.V., Fedorovsky V.S., Gladkochub D.P., Mazukabzov A.M., Pisarevsky S.A., Poller U., Todt W., Wingate M.T.D.Fuentes:scopusThe Gabal Gerf complex: A precambrian N-MORB ophiolite in the Nubian Shield, NE Africa
ArticleAbstract: We report geochemical and isotopic data for tectonically dismembered units of the Gabal Gerf mafic-uPalabras claves:Autores:Alfred Kron̈er, Jochum K., Reischmann T., Todt W., Zimmer M.Fuentes:scopusSingle zircon dating constraining the maximum age of the Barberton greenstone belt, southern Africa
ArticleAbstract: One of the central issues in early Precambrian crustal evolution is the age and genetic relationshipPalabras claves:Autores:Alfred Kron̈er, Todt W.Fuentes:scopusSm-Nd, Rb-Sr and Pb-Pb dating of silicic carbonates from the early Archaean Barberton Greenstone Belt, South Africa: Evidence for post-depositional isotopic resetting at low temperature
ArticleAbstract: Two silicic carbonate sequences occurring in the Onverwacht Group (OG) and the overlying Fig Tree GrPalabras claves:Archaean, Barberton greenstone belt, Carbonates, Dating, geochronology, Greenstone belt, Isotopic resetting, South AfricaAutores:Alfred Kron̈er, Clauer N., Goldstein S.L., Schidlowski M., Theofilos Toulkeridis, Todt W.Fuentes:googlescopusRelationships between the mantle, lower crust and upper crust within the Agardagh-Tes Chem ophiolite, Central Asia: Evidence from petrologic, trace element, and isotopic data
Conference ObjectAbstract: Ophiolites are generally regarded as fragments of oceanic crust, ideally comprising a mantle sectionPalabras claves:Autores:Alfred Kron̈er, Jochum K., Pfander J., Todt W.Fuentes:scopusU-Pb isotopic systematics of zircons from prograde and retrograde transition zones in high-grade orthogneisses, Sri Lanka
ArticleAbstract: We present U-Pb zircon isotopic data from locally restricted prograde (arrested in situ charnockitizPalabras claves:Autores:Alfred Kron̈er, Baur N., Hofmann A.W., Liew T., Todt W., Williams I.Fuentes:scopusU-Pb zircon and Sm-Nd model ages of high-grade Moldanubian metasediments, Bohemian Massif, Czechoslovakia
ArticleAbstract: We report single grain U-Pb ion-microprobe as well as conventional bulk size fraction ages for zircoPalabras claves:Autores:Alfred Kron̈er, Compston W., Fiala J., Liew T., Todt W., Vanek J., Vankova V., Wendt I.Fuentes:scopus