Mostrando 10 resultados de: 12
Filtros aplicados
Subtipo de publicación
Article(12)
Publisher
Chemical Geology(3)
Precambrian Research(2)
Clay Minerals(1)
Clays and Clay Minerals(1)
Comptes Rendus de l'Academie de Sciences - Serie IIa: Sciences de la Terre et des Planetes(1)
Área temáticas
Mineralogía(6)
Ciencias de la tierra(5)
Geología económica(4)
Petrología(4)
Ciencias de la Tierra de América del Norte(2)
A 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:googlescopusChemical 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:googlescopusCrystallization conditions of fundamental particles from mixed-layer illite-smectite of bentonites based on isotopic data (K-Ar, Rb-Sr and δ<sup>18</sup>O)
ArticleAbstract: Rb-Sr and oxygen isotope studies, in addition to K-Ar isotopic determinations published previously,Palabras claves:Bentonites, East-Slovak Basin, Fundamental particles, Isotopic tracing, Rb-Sr, δ O 18Autores:Clauer N., Liewig N., Pierret M., Theofilos ToulkeridisFuentes:googlescopusEffect of thermal maturation on the K-Ar, Rb-Sr and REE systematics of an organic-rich New Albany Shale as determined by hydrous pyrolysis
ArticleAbstract: Hydrous-pyrolysis experiments were conducted on an organic-rich Devonian-Mississippian shale, whichPalabras claves:Hydrous pyrolysis, K-Ar, Mineral-organic interactions, New Albany shale, Rb-Sr, REEAutores:Chaudhuri S., Clauer N., Lewan M.D., Theofilos ToulkeridisFuentes:googlescopusDifferentiated hydrothermal and meteoric alterations of the Lueshe carbonatite complex (Democratic Republic of Congo) identified by a REE study combined with a sequential acid-leaching experiment
ArticleAbstract: The behavior of rare-earth elements (REE) during hydrothermal alteration and progressive weatheringPalabras claves:Carbonatite, Hydrothermal alteration, Meteoric weathering, Rare-earth elements, Republic of CongoAutores:Bilal E., Clauer N., Nasraoui M., Theofilos ToulkeridisFuentes:googlescopusRare-earth elements as tracers of the genetic relationship between smectite and palygorskite in marine phosphorites
ArticleAbstract: Detrital smectite in a shandy claystone and a phosphorite, and authigenic palygorskite in a dolomitiPalabras claves:Autores:Bouabdelli M., Chahi A., Clauer N., Theofilos ToulkeridisFuentes:googlescopusMineralogical, geochemical (REE), and isotopic (K-AR, RB-SR, δ<sup>18</sup>O) evolution of the clay minerals from faulted, carbonate-rich, passive paleomargin of southeastern Massif Central, France
ArticleAbstract: Mineralogical, geochemical (REE), and isotopic (K-Ar, Rb-Sr, δ18O) data of < 0.2 μm clay fractions fPalabras claves:Autores:Clauer N., Gauthier-Lafaye F., Sizun J.P., Theofilos Toulkeridis, Weber F.Fuentes:googlescopusPreliminary information on the chemical; and isotopic compositions of waters from the Caspian Sea and its tributaries in the Makachkala region (Russia)
ArticleAbstract: The δ18O and 87Sr/ Sr values of thermal waters from the western coast of the Caspian Sea, which contPalabras claves:Autores:Blanc G., Clauer N., Gasse F., Theofilos Toulkeridis, Zuppi G.M.Fuentes:googlescopusPb-Pb age, stable isotope and chemical composition of Archaean magnesite, Barberton Greenstone Belt, South Africa
ArticleAbstract: Trace-element, carbon, oxygen and lead-isotope analyses were carried out to determine the formationPalabras claves:Autores:Alfred Kron̈er, Clauer N., Peucker-Ehrenbrink B., Schidlowski M., Theofilos Toulkeridis, Todt W.Fuentes:googlescopusSequential leaching of silicified Archaean carbonates: A Rb-Sr, Sm-Nd and Pb-Pb isotopic contribution to their tectonic-thermal history (Kaapvaal Craton, South Africa)
ArticleAbstract: Sequential leaching was completed by successive interactions of ultra-pure H2O, HAc, HCl and HNO3 wiPalabras claves:Barberton greenstone belt, Isochron vs. isotrend arrays, Post-depositional thermal events, Rb-Sr, Sm-Nd and Pb-Pb isotope systematics, REE distribution patterns, Sequential leaching procedureAutores:Alfred Kron̈er, Clauer N., Theofilos Toulkeridis, Uysal I.T.Fuentes:googlescopus