The data files belong to a 3D structural model which covers the Glueckstadt Graben, NW Germany. The constructed 3D model is 170 km wide and 166 km long with a horizontal grid spacing of 2000 m, and a vertical resolution corresponding to the number of integrated layers. The 3D structural model includes 10 layers: (1) sea water; (2) Quaternary-Neogene; (3) Paleogene; (4) Upper Cretaceous; (5) Lower Cretaceous; (6) Jurassic; (7) uppermost part of the Middle Triassic and the Upper Triassic (Keuper); (8) Middle Triassic without uppermost and lowermost parts (Muschelkalk); (9) Lower Triassic and lowermost part of the Middle Triassic (Buntsandstein); (10) upper part of the Lower Permian and the Upper Permian (undivided Zechstein plus salt-rich Rotliegend). The thicknesses of the layers correspond to apparent thicknesses. In addition, data for earth surface topography is provided in the file: 0_Topography.dat. Model coordinates are based on the Gauss-Krueger DHDN (zone 3) system. The data format is ASCII and contains three columns (X, Y and Z), where X and Y are geographical coordinates (X = longitude, Y = latitude); Z (in m) is thickness of the layer or structural depth (base of layer) or surface elevation. The grid of each layer consists of 86 cells in W-E direction and 84 cells in S-N direction. The grid limits are the following: Xmin = 3450000 and Xmax = 3620000; Ymin = 5915100 and Ymax = 6081100. The vertical datum of the 3D model refers to the mean sea level. Organisation of data files: Data are organized in two folders (“Bases” and “Thicknesses”); data for earth surface topography (in case of water: sea level) is in the root folder ( 0_Topography.dat).The folder “Bases” contains 10 data files named according to the model layers as outlined above. The folder “Thicknesses” contains 10 data files named according to the model layers as outlined above.