Some major specializations of Geology seem uniquely "geological":

But geology is interdisciplinary by nature. Consider: There are large overlaps between many of these fields. Examples:

In a more profound way, Geologists are interdisciplinarians, connecting with non-geological specialties. E.G.: Regardless specialization, geologists spend lots of time in labs performing analytic procedures and at their desks interpreting and writing up the results. In many areas, large portions of time are spent in the field.

Where it's done: Depending on their specializations, geologists might work for:

What it takes to get in:

Where you should get this education? The University of Maryland Department of Geology, of course.