I am interested in assessing a thermal spring in the Ecuadorian Andes. However I have no experience in these type of geological features and I am not sure how to proceed. The spring is located over volcanic deposits: breccias, ashes and piroclastic deposits from mid - late Pleistocene (according to the geological map). The aim is to verify if this spring (water and gas) can be used in some practical application.
The spring emits also a gas (unknown at this point) aside from water. The gas seems to be toxic since some people died last year, but only during certain hours during the night (during the day, people use this spring with no problems).
Can you recommend some bibliography to start with? in reference to thermal emissions characterization, water characterization and if possible modeling of these kind of systems. If some similar case is known I will highly appreciate this information.