Chemistry of bulk-rocks and minerals of ODP Hole 120-748C, supplement to: Bitschene, Peter Rene; Holmes, Mary Anne; Breza, James R (1992): Composition and origin of Cr-rich glauconitic sediments from the southern Kerguelen Plateau (Site 748). In: Wise, SW; Schlich, R; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 120, 113-134

Peter Rene Bitschene, Mary Anne Holmes & James R Breza
Five hundred meters of a unique Upper Cretaceous Cr-rich glauconitic sequence (Unit III) that overlies a 3-m-thick alkali-basalt flow with underlying epiclastic volcanogenic sediments was drilled at ODP Leg 120 Site 748. The Cr-rich glauconitic sequence is lithostratigraphically and biostratigraphically divided into three subunits (IIIA, IIIB, IIIC) that can also be recognized by the Cr concentration of the bulk sediment, which is low (<200 ppm) in Subunits IIIC and IIIA and high (400-800 ppm) in...
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