I'm am exploration geologist, which is probably the closest thing to what you're thinking you want to do. Personally I wouldn't recommend going for it unless you really enjoy math and science.

Get into geology because you love science. Get into it because you have a passion for mathematics, chemistry and scrutinizing the natural world.

Do NOT get into geology because you like hiking and mountains. That's a requirement but shouldn't be your impetus.

I'd recommend going for a park ranger job. Get a degree in Environmental Science (more general and not as rigorous), and volunteer any chance you get.

If you want to be a geologist that works outdoors in a job that doesn't suck, you're talking about 6 years of schooling (including master's).