Mostrando 7 resultados de: 7
Filtros aplicados
Publisher
Sedimentary Geology(2)
Energy Sources, Part A: Recovery, Utilization and Environmental Effects(1)
Estudios Geologicos(1)
GIS and Spatial Analysis - 2005 Annual Conference of the International Association for Mathematical Geology, IAMG 2005(1)
International Journal of Coal Geology(1)
Área temáticas
Geología, hidrología, meteorología(3)
Geología económica(2)
Paleontología(2)
Petrología(2)
Probabilidades y matemática aplicada(2)
Origen
scopus(7)
Cluster analysis and other multivariate statistical methods applied in the identification of chemofacies: Example in the tertiary falcon basin, Venezuela
Conference ObjectAbstract: The application of multivariate statistical methods (cluster, correspondence and factorial analysis)Palabras claves:Autores:Barráez D., Gutiérrez J.V., Manuel Martínez, Montero-Serrano J.C.Fuentes:scopusGeochemical behavior of molybdenum and its isotopes in the sedimentary environment - A bibliographic review
ArticleAbstract: Numerous studies have been devoted to trace metals and their value in assessing the paleoredox condiPalabras claves:geochemistry, Molybdenum isotopes, paleoenvironments, Paleoredox conditionsAutores:Garbán G., Manuel Martínez, Montero-Serrano J.C., Riboulleau A., Tribovillard N.Fuentes:scopusGeochemical signatures of bedded cherts of the upper La Luna Formation in Táchira State, western Venezuela: Assessing material provenance and paleodepositional setting
ArticleAbstract: Here we undertook an inorganic geochemical study of Cenomanian-Campanian bedded cherts (the TáchiraPalabras claves:Bedded chert, Depositional setting, Modified Murray diagram, Provenance, Táchira Ftanita memberAutores:Escobar M., Esquinas N., Garbán G., Gonzalo Márquez, Manuel Martínez, Rey O.Fuentes:scopusOrganic petrology of Paleocene Marcelina Formation coals, Paso Diablo mine, western Venezuela: Tectonic controls on coal type
ArticleAbstract: About 7 Mt of high volatile bituminous coal are produced annually from the four coal zones of the UpPalabras claves:Coal, Organic petrology, Paleocene, Paso Diablo mine, VENEZUELAAutores:Hackley P., Manuel MartínezFuentes:scopusSedimentary chemofacies characterization by means of multivariate analysis
ArticleAbstract: Multivariate statistical analysis is applied to geochemical data from three sections forming part ofPalabras claves:Chemostratigraphy, Compositional data, Constrained cluster, geochemistry, Log-ratio transformation, Robust statisticsAutores:Gutiérrez-Martín J.V., Manuel Martínez, Martín-Fernández J.A., Montero-Serrano J.C., Palarea-Albaladejo J.Fuentes:scopusThe effects of sulfur on the weathering extent of carbon. A companson of two mines in Hato de la Virgin, State of Tachira, Venezuela
ArticleAbstract: Ten bituminous coal samples, showing several weathering levels, were collected at different depths iPalabras claves:Coal, geochemistry, OXIDATION, Sulfur, VENEZUELA, WeatheringAutores:Escobar M., Esteves I.H., Galarraga F., González R., Manuel MartínezFuentes:scopusTi/Zr ratio as a geochemical tool for the correlation of weathered coals from geological formations in two Latin American sedimentary basins
ArticleAbstract: Major and trace element concentrations in fresh and altered coals in outcrops and coalfields from TáPalabras claves:Coal, elemental ratio, inorganic geochemistry, seam correlation, weathering processesAutores:A. Álvarez, Érica Lorenzo, Escobar M., Fernando Morante-Carballo, Gonzalo Márquez, Manuel MartínezFuentes:scopus