We integrate provenance, sedimentological and tectonic analyses to reconstruct sediment sources, transport pathways and hydroclimatic evolution of the Rotliegend Group in the Norwegian North Sea. The study also evaluates implications for basin development and reservoir quality in this key reservoir interval. Detrital zircon U-Pb geochronology from nine wells integrated with facies analysis, dipmeter- and image-derived palaeocurrent data and a palinspastic restoration reveals that sediment sources were closer to the basin than today and that inherited structural highs compartmentalized drainage and aeolian fields. Facies trends record a transition from arid dune fields to semi-arid mixed dune, interdune, flash-flood and playa-lake systems, reflecting increasing hydrological connectivity and base-level rise during the early Permian. Detrital zircon spectra define three main provenance domains with Caledonian-derived aeolian sand transported from the west-northwest, Sveconorwegian-sourced alluvial-fan systems along the eastern basin margin and hybrid basement-fed systems along northern and southern highs. Mixed zircon-age populations indicate substantial recycling of Devonian Old Red Sandstone basin fills and convergence of multiple sediment transport pathways within the basin interior. Converging transport pathways enabled interaction between long-distance and short-range detrital zircon input, whereas sustained pathway partitioning maintained distinct first-order provenance domains at basin scale. Provenance influences reservoir quality through its control on sediment composition, texture and depositional facies, with quartz-rich Caledonian-derived aeolian deposits retaining anomalously high porosities and feldspathic Sveconorwegian-derived alluvial-fan deposits displaying consistently lower porosity. Integrating provenance, facies, palaeocurrents and restored basin geometry therefore provides a predictive framework linking sediment transport, tectonic inheritance, and reservoir distribution in ancient continental basins.