I own this map and perhaps one of the interesting things about this map is not only the wealth of information available and aesthetic quality but how over 40 European and adjacent countries worked together to create the seamless geology map hanging in my office as well as a GIS Database underpinning it.
Figure 1 The International Map of Europe and the Mediterranean region 1 : 1 500 000 (Ash, 2005).
The project that created the geology of Europe map was called IGME 500 and the aims were to develop a GIS underpinned by a geological database, and also a printed map providing up-to-date and consistent geological information.
Cartography of chronostratigraphy
Asch, K. (2005): IGME 5000: 1 : 5 Million International Geological Map of Europe and Adjacent Areas. BGR (Hannover).