University Of Exeter or Cardiff University

the course is king and so I’d break it down into modules and look at where that takes you - ask what Applied means specifically in this context to differentiate one course from the other? Both cities have a lot of employment opportunities in your area, so don’t think you can go wrong. Supervisors/ teachers really matter, so ideally visit both departments and speak to anyone who has first hand knowledge such as a student or PhD researcher or people involved in delivering the masters.

Well, in the Applied Environmental Geology program, the concentration lies in the integration of geology and environmental studies, with a component of mathematics. Conversely, Exploration Geology delves deeper into mineral exploration, involving extensive fieldwork and a direct association with mining. As an international student, visiting both departments presents a logistical challenge. From my research, it's evident that the geology department at Exeter holds a prestigious global standing, while Cardiff University excels in environmental studies. The excellence of their environmental departments only adds to the complexity of the decision-making process.

ah, I see the problem
perhaps consider trawling emails of a tutor or two for each one and pose brief but very specific questions?
guess it will come down to your personal preference as to which area you hope to research/ work in
wish you the very best decision