Dataset {
    Int32 crs;
    Int32 x[x = 1080];
    Int32 y[y = 1080];
    Float32 z[z = 160];
    Grid {
      Array:
        Float32 lat[x = 1080][y = 1080];
      Maps:
        Int32 x[x = 1080];
        Int32 y[y = 1080];
    } lat;
    Grid {
      Array:
        Float32 lon[x = 1080][y = 1080];
      Maps:
        Int32 x[x = 1080];
        Int32 y[y = 1080];
    } lon;
    Grid {
      Array:
        Int32 lithostrat[x = 1080][y = 1080][z = 160];
      Maps:
        Int32 x[x = 1080];
        Int32 y[y = 1080];
        Float32 z[z = 160];
    } lithostrat;
} nl3d_lithostrat.nc;