Figure 20.
Bunter Shale Formation isochore map derived from well-top point data. The Bunter Shale Formation provides an effective seal for the Rotliegend Group Leman Sandstone reservoir in areas where Zechstein Group halokinesis has led to withdrawal or grounding and welding of the Triassic on to the Rotliegend Group. NSTA = North Sea Transition Authority.