The dataset comprises a geological structural map of the Danish Basin at a scale of 1:500,000 showing the structure of the chalk surface (Top Chalk). The map was published in 1991 as part of the DGU Map Series no. 7 and is based on regional geological interpretation of borehole data and seismic data. The data basis includes deep onshore boreholes, seismic profiles from hydrocarbon exploration, and seismic surveys from the inner Danish waters. The map covers Denmark and adjacent marine areas and was produced to support regional geological understanding of the structure of the chalk surface in the Danish Basin.

The dataset comprises a combined geological map of the Danish Basin showing the distribution, depth conditions, and thickness variations of the Top Triassic and Jurassic–Lower Cretaceous units. The maps illustrate the regional structure and stratigraphic framework of the basin and provide an overview of its geological development from the Late Triassic to the Early Cretaceous. The presentation is based on a synthesis of borehole data, seismic information, and stratigraphic interpretations and is produced at a scale of 1:400.000. The maps were published in 1991 as part of the DGU Map Series No. 30.

The dataset comprises a geological map of the Danish Basin at a scale of 1:400,000 presenting regional thematic maps of the Base Chalk and the Chalk Group. The map was published in 1993 as part of the DGU Map Series no. 29 and was produced as part of regional geological mapping of the basin. The mapping is based on interpretation of seismic data supplemented by information from deep onshore and offshore boreholes. The dataset consists of several thematic sub-maps that together show the depth to the Base Chalk and the vertical thickness (isochore) of the Chalk Group. The map covers the Danish Basin and adjacent areas and was produced to support regional structural and stratigraphic interpretation.