Geofluids is a peer-reviewed, Open Access journal that provides a forum for original research and reviews relating to the role of fluids in mineralogical, chemical, and structural evolution of the Earth’s crust. Its explicit aim is to disseminate ideas across the range of sub-disciplines in which Geofluids research is carried out. To this end, authors are encouraged to stress the transdisciplinary relevance and international ramifications of their research. Authors are also encouraged to make their work as accessible as possible to readers from other sub-disciplines.

Geofluids emphasizes chemical, microbial, and physical aspects of subsurface fluids throughout the Earth’s crust. Geofluids spans studies of groundwater, terrestrial or submarine geothermal fluids, basinal brines, petroleum, metamorphic waters or magmatic fluids.

Articles may describe theoretical or observational studies, explore the geologic, geochemical, biochemical or geophysical attributes of subsurface fluids, quantify the geologic controls on permeability, geochemical transport and heat transport, or document applied aspects of crustal fluid behaviour. Examples of areas covered include, but are not restricted to:

Composition and origins of geofluids
	Hydrodynamics of sedimentary basins; role of regional groundwater flow in geologic processes
	Chemical or physical behaviour of geofluids in porous or fractured rocks
	Role of biological processes, including microbial activity and life generation processes, in shallow and deep subsurface fluids
	Gas-water-rock interactions, including serpentinization and abiotic gas production
	Palaeohydrology of flow regimes as inferred from isotope systematics and fluid inclusion studies
	Relations between past or present fluid flow and geothermics of the Earth’s crust
	Structural and seismic controls on deep fluid migration
	The role of fluids in crustal deformation
	Role of groundwater chemistry in landscape evolution, soil development, and evaporite formation
	Mechanisms of petroleum generation, migration, and the interaction of hydrocarbons with groundwater
	Reactive flow in rock media
	Fluid flow, heat transport, and chemical metasomatism associated with hydrothermal ores
	Geochemistry of dissolution, transport, and precipitation by fluids
	Mathematical and experimental studies of geofluid migration
	Fluid flow accompanying metamorphism or magmatic crystallisation
	Fluid pressure regimes in the crust