RT Journal Article
T1 Relaciones entre la diagénesis orgánica y mineral en rocas madre de cuencas lacustres: cuenca terciaria de Ribesalbes
T1 Organic and mineral diagenesis in oil source rocks: the Tertiary of Ribesalbes basin
A1 Permanyer, Albert
A1 Marfil Pérez, Rafaela
A1 Dorronsoro Urrutia, C.
AB Lacustrine carbonate sediments from the Tertiary Basin of Ribesalbes (Castellón, Spain) were studied with the aim of determining the relationships between organic and mineral diagenesis. Petrological and geochemical data indicated that organic matter was inmature type I. Both mineralogy and textural relations suggest that Mg-rich blue-green algae contributed to the high Mg/Ca rate found in the Ca-MgFe carbonates through diagenetic process.ln the first stage of the diagenesis, in the lacustrine anoxic environment, the bacterial processes was dominant producing the precipitation of the Ca-Mg carbonates and aragonite.Because sulfate reduction was not significant, the Mg-calcite or dolomite and the aragonite were replaced by ankerite when fermentation started, with an important methane production of bacterial origin.The most remarkable characteristics of the porosity data and the poresize distribution curves are the moderate range of porosity values (10-26%) and the porosity parameters -sorting and skewness-, which are more affected by the early organic diagenetic processes than by mechanical compaction.
PB Sociedad Geológica de España
YR 1993
FD 1993
LK http://hdl.handle.net/10272/14059
UL http://hdl.handle.net/10272/14059
LA spa
DS Repositorio Institucional de la Universidad de Huelva
RD 30 may 2026