Are there any geology only related educational institutions? I'm not looking for college recommendations or which is the best, so I'm not asking for opinions on which institutions are the best. What I would like to know is if there are specific places that someone could go where they can just focus on geology related fields only. And only take classes that pertained to acquiring enough education to work in a geology related field.
Why would you limit yourself? You could just go to a regular university and enroll in the geology degree program. In some countries (like Germany) you would then only take courses necessary to become a geologist (including the math and physics you need to understand for it). In some other countries (e.g, the United States) you'd have to take other courses for "breadth requirements" as well, but most of your courses would still be in geology. 

The fact that a regular university also offers courses in other areas doesn't really matter that much, or does it?