Geophysical drivers for water/silicate interaction
Heat-flow from planetary interiors – to convect or not to convect?
Thermal contraction and fracturing of the silicate layer(s)
The importance of seafloor topography – will there be any?
Geologic settings for water/silicate interactions
Occurrence, extent and temporal stability of water-rock interaction sites
Sub-seafloor flow and interactions
Settings for fluid-fluid and fluid-rock (“mud”) mixing
Seafloor weathering
Geochemistry of water/rock reactions
Fluid and rock compositions at chemical equilibrium
Kinetic limitations or inhibitions to chemical equilibrium and associated timescales
Abiotic organic synthesis and consumption
Feed-backs on geophysics (e.g., porosity, generation of antifreeze compounds, fate of radionuclides)
Feed-forwards on habitability: extent of thermodynamic disequilibrium
Biological Processes and Signatures
Microbiology of water-rock interaction settings with astrobiological significance
Metabolic strategies in chemosynthetic ecosystems
Biosignature synthesis at sites of water-rock interaction
Biosignature transport, persistence and fate, in space and time
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