TNO, 3 October 2013

Take note:
- when these files are used in any form TNO/nlog must mentioned as the source
- the shape files represent the outlines the Posidonia Shale Formation and the Geverik Member distribution in the Dutch onshore subsurface
- the outlines are based on mapped distribution
- the Geverik (Namurian) outline has been cutoff at 5km depth, the total formation is found in almost the entire Netherlands subsurface


