Reviewer 1: The authors present an interesting case study integrating geophysical, geological and hydrochemical data to map potential pathways for water and gases across complex sedimentary formations in the Northern Territories, in Australia.
Line 360: Here and throughout the text, the word ‘recent’ is used to describe some tectonic activity. It would be good define what recent means in the context of this study. An indication is provided in the Discussion (Line 414), but it would go to state this value upfront in the text.