https://www.usgs.gov/publications/deep-ocean-polymetallic-nodules-and-cobalt-rich-ferromanganese-crusts-global-ocean-new
The transition from a global hydrocarbon economy to a green energy economy and the rapidly growing middle class in developing countries are driving the need...
deep oceanpolymetallic nodulescobaltrichferromanganese
https://www.usgs.gov/publications/osmium-isotope-stratigraphy-a-marine-ferromanganese-crust
Ferromanganese crusts provide records of long term change in ocean circulation and continental weathering. However, calibrating their age prior to 10 Ma has...
osmium isotopestratigraphymarineferromanganesecrust