Main factors controlling the compositional variability of seepage oils from Trujillo State, western Venezuela (Record no. 175094)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 01863nab a2200181 4500 |
| 008 - CÓDIGOS DE INFORMACIÓN DE LONGITUD FIJA - INFORMACIÓN GENERAL | |
| Campo de control de longitud fija | 260224s2010 xxu |
| 245 00 - TITULO | |
| Título | Main factors controlling the compositional variability of seepage oils from Trujillo State, western Venezuela |
| 260 ## - PUBLICACION, DISTRIBUCION, ETC | |
| Lugar de publicación, distribución, etc. | |
| Nombre de publicador, distribuidor, etc. | |
| Fecha de publicación, distribución, etc. | jul. 2010 |
| 270 ## - FECHA DE CARGA | |
| Fecha de carga | 20/07/2010 ; 20/07/2010 |
| 300 ## - DESCRIPCION FISICA | |
| Otra extensión | 14 p. ; 255-268 |
| 520 ## - RESUMEN, ETC | |
| Resumen | Transcripción del resumen del autor. The organic geochemistry of eighteen samples of seepage oils from Trujillo State, Western Venezuela, was investigated. These oils are probably derived from the predominantly marine Cretaceous La Luna Formation which is near peak maturity for oil generation. A range of biomarkers (n-alkanes, acyclic isoprenoids, phenanthrene and alkyl-phenanthrenes, as well as dibenzothiophene and alkyl-dibenzothiophenes) were analysed by gas chromatography - mass spectrometry (GC-MS). The seepage oils have been modified as a result of water washing and biodegradation. A first group of samples were slightly biodegraded with the partial loss of n- and iso-alkanes. Other samples fall into two groups: those that are moderately degraded, with partial depletion of acyclic isoprenoids; and those that are severely altered, as indicated by the partial or total absence of hopanes. One objective of this work was to evaluate the factors influencing the compositional differences of the three samples sets. In-situ measurements, together with the interpretation of the geochemical data, suggest that diverse factors were responsible for these variations. These included different degrees of alteration due to biodegradation and water washing, as well as differences in flow rate towards the surface. |
| 581 ## - ESTADO DE COLECCIÓN | |
| Estado de colección | 3 |
| 773 0# - CORRECCIÓN | |
| Título | Journal of Petroleum Geology |
| Partes relacionadas | 33 |
| 942 ## - DESC. DE MATERIAL | |
| Tipo de item KOHA | Artículo de Revista |
| 100 1# - RESPONSABLE PERSONAL | |
| Apellido, Nombre | Galarraga, F. |
| 9 (RLIN) | 45760 |
| Biblioteca propietaria | Biblioteca actual | Fecha de adquisición | Inventario | Total de préstamos | Inventario | Fecha de carga | Tipo de item KOHA |
|---|---|---|---|---|---|---|---|
| Biblioteca Alejandro Angel Bulgheroni | Biblioteca Alejandro Angel Bulgheroni | 05/03/2026 | 200046976 | 200046976 | 05/03/2026 | Artículo de Revista |
