Integration of seismic stratigraphy and cyclostratigraphy for high resolution chronostratigraphic correlation: The Albacora Field, Campos Basin, Brazil

Abstract

High-resolution chronostratigraphy is fundamental for a refined interpretation of the evolution of sedimentary basins and, consequently, for generating more accurate geological models, which are essential for oil and gas exploration. This study provided an innovative integration of seismic reflectors interpretation, a biostratigraphic framework and 405-kyr astronomically-tuned age models from three wells, arranged in a dip section comprising Miocene deposits in the slope break of the Albacora Field, Campos Basin, Brazil. We (i) to provide a high-resolution, 2D astrochronologic model from the combination of three astronomical timescales (ATSs) – comprising a timespan of ∼3 Myr for the dip section; (ii) infer that the studied section comprises the middle Miocene deposits and records the Miocene Optimum Climate, and the significant eustatic falls that delimit this event; and (iii) provide refined age estimates for the seismic reflectors near the biozones.