Rare earth element concentrations and geochemistry of carbonate minerals from the Logatchev Hydrothermal Field and the Gakkel Ridge

ark-xvii/2; center for marine environmental sciences; deridge; dredge, pipe; drg_p; from mantle to ocean: energy-, material- and life-cycles at spreading axes; hydromar1; m60/3; m60/3-49-gtv; m60/3-53-rov-2; m60/3-54-gtv; m60/3-67-gtv; marum; meteor (1986); mid-atlantic ridge at 10-15°n; polarstern; ps59/238; ps59/249; ps59 amore; remote operated vehicle; rov; television-grab; tvg