Improved salt imaging in a basin context by high resolution potential field data: Nordkapp Basin, Barents Sea

摘要: ABSTRACT The seismic imaging of salt diapirs in the Nordkapp Basin gave rise to considerable problems defining their shape and volume. Independent information was added by integrating interpretation with high resolution gravity magnetic data. We developed a novel, iterative workflow, separated into sub‐categories: sediments, structures, basement Moho. Distinctions between sources anomalies from different depths achieved utilizing decay characteristics gravity, gradiometry anomalies. workflow applied southern part Basin. It started sedimentary model derived seismics, populated measured densities susceptibilities starting for base salt. residual after removal this interpreted terms crustal model, including flexural isostatic calculations Moho load. early used tune model. As these major minor modelling steps depend on each other, an process stepwise improve density susceptibility first vertical gradient field were found give most about cap rock diapirs. improvement imaging, integrated results controlled‐source electromagnetic magneto‐telluric is shown diapir Uranus, where well, terminated salt, constrains minimum depth