Chemical composition of seamount encrustations from the Midpac '81 as measured by the Bundesanstalt für Geowissenschaften und Rohstoffe (BGR)

The ferromanganese crust samples studied have been taken from Central Pacific seamount areas during the research cruise Midpac 81. Two ferromanganese crust generations with different ages have been identified; in between a period of carbonate sedimentation and an episode of phosphorite formation have taken place. The older crust generation, therefore, is mostly impregnated by carbonate-apatite. chemical concentration was determined by X-ray fluorescence (XRF) by the Geowissenschaften und Rohstoffe (BGR) on-board ship.

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