Assessment of Relative Tectonics Activity Zones in Masila Oil Field, Yemen

摘要

Masila oil field, a part of rift graben basin (Sayun-Masila basin), Yemen, is affected by several tectonic events since Pre-Cambrian period. The present study makes an effort to assess the relative tectonic activity in this oil field. Several geomorphic indices, lineaments, and depth structural anomalies were generated as thematic maps using remotely sensed data, wells data, and existing geological and seismic data in a GIS platform. The thematic maps were converted into a grid format, classified into different categories based on their relative importance, and integrated using the GIS integration tool. The final map, generated by the integration of thematic maps, was categorized into five relative tectonic zones, namely very high relative tectonic zone (9.2%), high relative tectonic zone (10.6%), moderate relative tectonic zone (30%), low relative tectonic zone (36%), and very low relative tectonic zone (14.2%). The surface lineament anomalies and subsurface geological cross-section were subsequently used to validate the derived results. The results obtained through this approach may be helpful for exploring resources, such as hydrocarbons, and predicting hazards. The study highlights the advantage of using different datasets from various sources and their overlay in a GIS platform for assessing relative tectonic activity.