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Elemental composition and mineralogy of NW Venezuelan Guasare coals: Provenance study and role of illite in methane sorption capacity
ArticleAbstract: A series of coal seams (groups 4 to 11) of Paleocene age in the Marcelina Formation have been open pPalabras claves:Bituminous coal, CBM, Elemental Composition, Guasare coalfield, Illite content, mineralogyAutores:Boente C., Carruyo G., Érica Lorenzo, Gonzalo Márquez, Manuel Martínez, Tocco R.Fuentes:scopusFactors controlling the vegetation distribution and coal-forming environments in a strike-slip basin. The Pennsylvanian Peñarroya-Belmez-Espiel Basin, southern Spain
ArticleAbstract: Coal-forming environments require humid to perhumid conditions. Tectonics governs the size, locationPalabras claves:Autores:Érica Lorenzo, González F., Gonzalo Márquez, Moreno C.Fuentes:scopusEvaluating the gas content of coals and isolated maceral concentrates from the Paleocene Guasare Coalfield, Venezuela
ArticleAbstract: This work presents the results from evaluating the gases sorbed by coal samples extracted from the PPalabras claves:Autores:Berbesi L.A., Gonzalo Márquez, Manuel Martínez, Requena A.Fuentes:scopusGEOCHEMICAL EVALUATION OF CRUDE OILS FROM THE CARACARA AND TIPLE AREAS, EASTERN LLANOS BASIN, COLOMBIA: PALAEO BIODEGRADATION AND OIL MIXING
ReviewAbstract: This study presents an organic geochemical characterization of heavy and liquid oils from CretaceousPalabras claves:biodegradation, Cenozoic, COLOMBIA, Cretaceous, heavy oil, Llanos Basin, mixed oil, organic geochemistry, reservoir geochemistryAutores:Esquinas N., Gallego J.R., Gonzalo Márquez, Permanyer A.Fuentes:scopusGeochemical characterization of crude oils and potential source rocks from southern coastal Ecuador: Hypothetical petroleum systems
ArticleAbstract: This research paper encompasses an organic geochemical investigation on oils and sedimentary rocks fPalabras claves:biodegradation, ECUADOR, mixed oil, Oil-source rock correlation, Progreso Basin province, QEDA resultsAutores:Antonio Morato Medina, Boente C., Gonzalo Márquez, Guzmán M.A., Witt C.Fuentes:scopusGeochemical composition of beach tar from the se coast of the paria peninsula, ne venezuela: Derivation from natural seepages
ArticleAbstract: Tar residues ("tarballs") occur frequently on the SE coast of the Paria Peninsula, NE Venezuela. ThiPalabras claves:Gulf of Paria, Los Bajos fault, Marine seepages, Naparima Hill Formation, organic geochemistry, Seepage oils, Tarballs, Trinidad, VENEZUELAAutores:Carlos Sierra, De Freitas K.A., Érica Lorenzo, Escobar M., Fernàndez R., Galarraga F., Gallego J.R., Gonzalo MárquezFuentes:scopusGeochemical evaluation of sedimentary rocks and hydrocarbon fluids in the Amistad offshore field, Progreso Basin Province, Southwest Ecuador
ArticleAbstract: This study contains a thorough isotopic and molecular characterization of a series of thirteen (13)Palabras claves:Amistad field, C –C alkanes 1 4, CSIA-D, Gas geochemistry, Reservoir compartmentsAutores:Antonio Morato Medina, Boente C., Gonzalo Márquez, Guzmán M.A., Tocco R., Witt C.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: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:scopusGeochemistry and chemostratigraphy of the Colón -mito juan units (campanian-maastrichtian), Venezuela: Implications for provenance, depositional conditions, and stratigraphic subdivision
ArticleAbstract: A geochemical and chemostratigraphical study was undertaken on Campanian-Maastrichtian sedimentary rPalabras claves:Chemostratigraphy, Colón -mito juan sequence, geochemistry, Lake maracaibo, Stratigraphic subdivisionAutores:Carlos Sierra, Escobar M., Esteves I.H., Gallego J.R., Gonzalo Márquez, Gutiérrez J.V., Manuel Martínez, Montilla L.Fuentes:scopus