Tectonic and Stratigraphic Evolution Based on Seismic Sequence Stratigraphy: Central Rift Section of the Campos Basin, Offshore Brazil

The rift section of the Brazilian basins represent sedimentary record associated with first stages Gondwana break-up in Early Cretaceous phase (Berriasian to Aptian). succession Campos Basin constitutes one main petroleum systems Brazil’s marginal basins. This interval contains source rock and important reservoirs Lagoa Feia Group deposits. is characterized by siliciclastic, carbonate evaporite sediments deposited during post-rift phases. Despite economic relevance, little known stratigraphic terms regarding this interval. To date, most studies have adopted a lithostratigraphic approach, while study proposes tectonostratigraphic framework for deep-rift (Lagoa Group), using fundamentals seismic sequence stratigraphy. work also aims establish methodological practical procedure analysis basins, data seismofacies, focusing on tectonicstratigraphic analysis. dataset comprised 2D lines, core lithological logs from exploration wells. Three facies were identified based reflector patterns lithologic well cores, providing an improved subdivision pre-, syn- stages. syn-rift stage was further subdivided geometric reflectors. Tectonics controlling factor succession, pattern geometry reflectors allowed identification three tectonic tracts: (i) Rift Initiation Systems Tract; (ii) High Tectonic Activity Tract (iii) Low Tract.