Caracterización de un campo de gas somero en la plataforma continental del Golfo de Cádiz.

Abstract

A shallow gas area has been mapped in the continental shelf of the Gulf of Cadiz, between 10 and 50 m depth. This area is located in the south of the Guadalquivir river mouth. High resolution seismic reflection profiles, have been interpreted to characterize the seismic facies and geological structures that could be related to the gas origin and distribution. At now, this gas storage can be related with high organic content from Gudalquivir river mouth during the Holocene in the prodelta unit. In this study it ispropose that these gassy deposits can have the origin in lower units related to transgressive deposits. The main factors that controls the generation of shallow gas, like rapid sedimentation deposition and abundant organic matter, merge in this area. In the Iberian margin, numerous previous papers about this subject have been published about the Galician margin. But in the Gulf of Cadiz the studies about this subject are limited.