Geochemistry of surface sediment cores (Table 4) ...

• Main Authors: Kasten, Sabine, Glasby, Geoffrey P, Schulz, Horst D, Friedrich, Günther, Andreev, Sergey I
• Format: Dataset
• Language: English
• Published: PANGAEA 1998
• Subjects: LATITUDE; LONGITUDE; Event label; Elevation of event; DEPTH, sediment/rock; Manganese; Iron; Manganese/Iron ratio; Aluminium; Vanadium; Chromium; Cobalt; Nickel; Copper; Zinc; Arsenic; Strontium; Molybdenum; Barium; Lanthanum; Cerium; Neodymium; Samarium; Terbium; Ytterbium; Lutetium; Cerium/Lanthanum ratio; Giant box corer; MultiCorer; Gravity corer Kiel type; HF/HNO3/H2O2 pressure digestion; Calculated; M6/6; M23/1; M23/3; M29/2; ANT-VIII/6; ANT-X/5; Meteor 1986; Polarstern; Paleoenvironmental Reconstructions from Marine Sediments @ AWI AWI_Paleo; South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261; Antarc*; Antarctic; Lazarev Sea; North Atlantic Deep Water; North Atlantic; South Atlantic Ocean; Weddell Sea
• Online Access: https://dx.doi.org/10.1594/pangaea.54795; https://doi.pangaea.de/10.1594/PANGAEA.54795

The mineralogy and geochemistry of a suite of nine manganese nodules from the South Atlantic have been determined. The Ce/La ratios of the nodules were investigated to see if they could be used as redox indicators to trace the oxygen content of the ambient water mass and the flow path of the Antarctic Bottom Water as has previously been successfully carried out in the Pacific Ocean. The Ce/La ratios of the nodules decrease in the sequence Lazarev Sea, Weddell Sea (10.4 and 9.7)>East Georgia Basin (6.5 and 7.1)>Argentine Basin (5.0), but then increase in the Brazil Basin (6.2) and Angola Basin (9.8 and 15.1). A further decrease was observed in the Cape Basin (7.6). An extremely high Ce/La ratio of 24.4 had already been determined for nodules sampled north of the Nares Abyssal Plain in the western North Atlantic. These data reflect the more complicated pattern of bottom water flow in the South Atlantic than in the South Pacific. The penetration of more oxygenated North Atlantic Deep Water into the South ... : Supplement to: Kasten, Sabine; Glasby, Geoffrey P; Schulz, Horst D; Friedrich, Günther; Andreev, Sergey I (1998): Rare earth elements in manganese nodules from the South Atlantic Ocean as indicators of oceanic bottom water flow. Marine Geology, 146(1-4), 33-52 ...