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Assessment of the oil source-rock potential of the Pedregoso Formation (Early Miocene) in the Falcón Basin of northwestern Venezuela
ArticleAbstract: The early Miocene Pedregoso Formation is one of the numerous formations rich in organic matter withiPalabras claves:Biomarkers, Carbonate turbidites, Catagenesis, Falcón Basin, geochemistry, Organic matter, Redox conditions, Thermal maturity, VENEZUELAAutores:Gonzalo Márquez, Gutiérrez-Martín J.V., Manuel Martínez, Montero-Serrano J.C., Riboulleau A., Tribovillard N.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 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:scopusGeochemistry of the Mirador Formation (Late Eocene-Early Oligocene), southwestern Venezuela: Chemostratigraphic constraints on provenance and the influence of the sea level
ArticleAbstract: A geochemical study was carried out on Eocene-Lower Oligocene sedimentary rocks (the Mirador FormatiPalabras claves:Chemostratigraphy, geochemistry, paleoenvironments, Provenance, VENEZUELAAutores:Esteves I.H., Gutiérrez J.V., Manuel Martínez, Martínez A., Meléndez W., Reátegui K., Urbani F.Fuentes:scopusMain factors controlling the compositional variability of seepage oils from trujillo state, western venezuela
ArticleAbstract: The organic geochemistry of eighteen samples of seepage oils from Trujillo State, Western Venezuela,Palabras claves:biodegradation, Hydrocarbon flow rate, Oil seeps, Trujillo State, VENEZUELA, Water washingAutores:Escobar M., Galarraga F., Gonzalo Márquez, Manuel Martínez, Tocco R., Urbani F.Fuentes:scopusNon-parametric approach to analysing PAHs data in atmospheric settled particles: Valencia City, Venezuela
ArticleAbstract: Non-parametric statistics and cluster analysis have been found useful to evaluate differences/similaPalabras claves:Atmospheric, categorical, non-parametric, PAHs, Pollutants, VENEZUELAAutores:Esteves I.H., Fernàndez R., Gamboa A., Laurent-Singh C., Manuel MartínezFuentes: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:scopusOxidation of natural graphite in the laboratory and comparison with the synthetic graphite oxide, by means of thermal and spectroscopic techniques
ArticleAbstract: With the aim of establishing the probable natural formation of graphite oxide (GO) during the weathePalabras claves:Cristalinity, graphite, Graphite oxide, VENEZUELA, WeatheringAutores:Barrios C., Escobar M., Manuel Martínez, Marrero S., Meléndez W., Pisapia D., Reátegui K.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:scopus