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REACTOR Theme 1: Seawater-crust interactions

REACTOR Theme 1 will examine and quantify reactions between seawater, sediment and rocks, and study the consequences of tectonic faulting for the physical and chemical properties of the lithosphere and the composition of the oceans. We will examine tectonic-sedimentary-hydrological dynamics and couplings in a range of settings, including oceanic rifts (rifted continental margins, slow and ultra-slow spreading ridges), ridge flanks, and subduction zones. Our studies will address how deep reactions between seawater and rocks provide energy-rich substrates that support ocean-floor ecosystems. Rates and pathways of such reactions as well as the implications for carbonate formation will be assessed using field and laboratory experiments.