Salt tectonics and controls on halokinetic-sequence development of an exposed deepwater diapir: The Bakio Diapir, Basque-Cantabrian Basin, Pyrenees

This work evaluates growth strata adjacent to the Bakio Diapir in Basque Pyrenees, aiming discuss application of halokinetic-sequence concepts, mainly developed shallow-water subaerial environments, deepwater depositional settings. is one few exposed passive diapirs with both synkinematic carbonate and siliciclastic strata. Thus, considering that large hydrocarbon producing areas are located salt provinces this study interest not only researchers tectonics, but also industry geoscientists focusing on exploration production. We present a 3D analysis outstanding structure by integrating detailed geological cartography, high-resolution bathymetry, seismic, well data. The resulting reconstruction enables us trace extent diapir offshore decipher its evolution from formation as wall above overlap two basement-involved faults until squeezing during Pyrenean compression. But more significantly, it allows discern roles played subsidence, sedimentation type configuration halokinetic sequences environments. our shows that: 1) geometry defined thickness roof edges, dip salt-sediment interface limbs active drape fold, onlap angle sediments over salt; 2) controlled ratio between salt-rise regional sediment-accumulation rate, water depth environment can promote vertical aggradation supra-diapir buildup; 3) high surface slopes consequent debrites exclusive to, characteristic of, hook tabular composite sequences. • an grew environment. architectures carbonates turbidites. Platform require modifications models interaction. Roof ultimate controlling factor Salt rise, subsalt impact carbonate-platform thickness.