English:
Collection of geologic maps of the Regierungsbezirk Detmold (see Ostwestfalen-Lippe) in North Rhine-Westphalia. The map shows: 

Borders on the level of municipalities, districts, the independent city of Bielefeld and the Regierungsbezirk itself.
Geothermal Yield on the level of municipalities, districts, the independent city of Bielefeld and the Regierungsbezirks itself.
Geologic Periods on the level of Regierungsbezirk.
Hydrogeological information (aquifers) on the level of Regierungsbezirk.For all information/ layers caption is available in English, German and French.
Technical Remarks:

The file was created using Adobe Illustrator, hence use of that application to edit it is strongly advised.
Pictures derived from this file should indicate this file as the source by using the following template:
based upon template: Code for this entry:based upon template:&lt;imagemap&gt;image:East-Westfalia_-_Geological_Collection_Example.png|100px|default [[image:East-Westfalia_-_Geological_Collection_Example.png]] desc none&lt;/imagemap&gt;
For proposals and criticism please contact me on my (German) wikipedia-user discussion, especially in case you intend to make changes to this file.
All layers were created by me from digitalized material that was re-edited after digitalization. None of the material was simply copied. Sources were:

Borders and Geothermal Energy: Geologischer Dienst Nordrhein-Westfalen: Basisversion Geothermie
Geologic Periods: based on de-wikepedia file OWL Geologie.png
Hydrogeology: based on LANUV- information
Hagar66