Sand injectites network as a marker of the palaeoestress field, the structural framework and the distance to the sand source: Example in the Vocontian Basin, SE France a b s t r a c t A large sand injectite network is very well exposed in the area of Bevons, Southeast France. The associated sandstone turbiditic channelefill and the host marls are the AptianeAlbian rocks of the Vocontian Basin. The sand injection network is composed of dykes, sills and sedimentary laccoliths ranging in thickness from mm to pluriem. The dykes and sills have vertical and horizontal lengths of up to and over 100 m and 1 km, respectively. Outcrop observations show that the architecture and morphology of the sand injectites in the marls is governed by the local stress field during injection, preeexisting faults, the hosterock lithology, compaction, and distance to the potential sand source(s). The main set of dykes is oriented N50e60 perpendicular to the minimum compressive stress s 3 during sand injection. Two other sets of dykes are intruded along preeexisting synesedimentary faults oriented N140e150 (set 2) and N90 (set 3) during the AptoeCenomanian interval. Sills and dykes thin laterally away from their potential sand sources and thin laterally away from them. The vertical thickness variations of the dykes and wings are more complex, as thinning away from the sand sources is often compensated by thickening toward the palaeoesurface. Based on field observations and measurements, we characterized the 3D architecture of the sand injectites and showed that the injectites probably formed due to a forceful injection from an overpressured sand body sealed by lowepermeability lithologies.