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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:scopusCorrelation between chemical, crystallographic and spectroscopic parameters in graphite thermometry applied to a contact aureole of la Soledad monzogranite (Venezuelan Andes)
ReviewAbstract: Graphite samples from a metamorphic contact aureole between phyllites of the Cerro Azul AssociationPalabras claves:Carbon isotopes, Contact metamorphism, graphite, Metapelites, Raman, VENEZUELA, XRDAutores:Manuel Martínez, Reátegui K.Fuentes:scopusEffect of coal weathering on some geochemical parameters
ArticleAbstract: The effect of coal weathering on some geochemical parameters was studied. Seven pairs of fresh and aPalabras claves:Bitumen, Coal, floatability, geochemistry, humic substances, VENEZUELA, WeatheringAutores:Escobar M., Manuel MartínezFuentes:scopusDistribution and geochemical significance of biphenyls and related bicyclic aromatic structures in oils from Ancon oilfield (Tertiary Progreso Basin), Ecuador
ArticleAbstract: A set of oils from Ancon oilfield (Neogene Progreso Basin, Ecuador), were studied by GC-MS in termsPalabras claves:ANCON, Biphenyls, Cyclohexylbenzenes, Diphenylmethanes, ECUADORAutores:Antonio Morato Medina, Érica Lorenzo, Gamboa A., Manuel MartínezFuentes:scopusDistribution of tiophenic organosulphur compounds in some venezuelan coals
ArticleAbstract: Some tiophenic organosulphur compounds (OSC) distribution in coal bitumen of four different localitiPalabras claves:Coal, Multivariate analysis, Organosulphur compounds (OSC), Sedimentary paleoenvironments, Thermal maturityAutores:Escobar M., Esteves I.H., González R., Manuel MartínezFuentes:scopusDistribution of trace elements in offshore sediments of the Orinoco Delta
ArticleAbstract: Surficial sediments from 56 stations on the Orinoco Delta offshore zone were analyzed by x-ray fluorPalabras claves:geochemistry, Heavy Metals, Surface sediments, VENEZUELA, X-ray fluorescenceAutores:Alfonso J.A., Benzo Z., Flores S., Manuel MartínezFuentes: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 correlation between oils and rocks of the petroleum system of the Santa Elena peninsula and the gulf of Guayaquil
ArticleAbstract: The southeastern of the Ecuadorian coast is a traditionally oil producing region, but the petroleumPalabras claves:ECUADOR, geochemistry, Gulf of Guayaquil, Source rock, Thermal maturityAutores:Antonio Morato Medina, Cristian Paul Álvarez-Domínguez, Érica Lorenzo, Manuel Martínez, Paulo Escandón-Panchana, Wladimir Andrés Roca-BeltránFuentes:googlescopusGeochemical 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:scopusGeochemical study of products associated with spontaneous oxidation of coal in the Cerro Pelado Formation, Venezuela
ArticleAbstract: The aim of this research work is a geochemical, mineralogical, and textural characterization of sponPalabras claves:Ammonium thiosulfate, Bituminous coal, Clinker material, Fumarolic mineralizations northwestern Venezuela, Spontaneous oxidationAutores:Del Río J., Gonzalo Márquez, Hurtado A., Manuel Martínez, Sánchez F.J.A.Fuentes:scopus