Ruth Blake’s areas of expertise include marine biogeochemistry, stable isotope geochemistry and geomicrobiology. Her recent work focuses on developing new stable isotope tools, geochemical proxies and biomarkers to study marine/microbial phosphorus cycling and evolution of the phosphorus cycle from pre-biotic to recent.

Ruth is engaged in a range of studies on co-evolution of earth and life and the impacts of both on biogeochemical processes occurring in the oceans, deep-sea sediments, seafloor hydrothermal systems and the sub-seafloor deep biosphere.