Canyons can be extremely rough on cameras. Particularly, canyons have a lot of sand and often water. Sand will destroy any camera with moving parts. Water will destroy any camera that is not waterproof. Nowadays, most people who canyoneer use their cell phones almost exclusively unless they're in a photography-specific canyon like Antelope Canyon. Phones can be at least somewhat protected with a picpocket, flexible waterproof case, or hard case.
I'm not a professional photographer, but here are a few tips that have worked for me.