Dubinin, Alexander V; Sval'nov, Vyacheslav N (2003): Contents of rare earth and other chemical elements in Fe-Mn micronodules, nodules, and bottom sediments from the Clarion-Clipperton ore province in the Pacific Ocean [dataset publication series]. P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, PANGAEA, https://doi.org/10.1594/PANGAEA.783875, Supplement to: Dubinin, AV; Sval'nov, VN (2003): Geochemistry of the manganese ore process in the ocean: evidence from rare earth elements. Translated from Litologiya i Poleznye Iskopaemye, 2003, 2, 115-125, Lithology and Mineral Resources, 38(2), 91-100, https://doi.org/10.1023/A:1023420324531
Always quote citation above when using data! You can download the citation in several formats below.
Abstract:
Processes governing the formation of rare earth element (REE) composition are under consideration for ferromanganese deposits (nodules, separate parts of nodules, and micronodules of different size fractions) within the Clarion-Clipperton ore province in the Pacific Ocean. It is shown that ferromanganese oxyhydroxide deposits with different chemical compositions can be produced in sediments under similar sedimentation conditions. In areas with high bioproductivity size of micronodules has positive correlation with Mn content and Mn/Fe and P/Fe ratios and negative correlation with Fe, P, REE, and Ce anomaly. Behavior of REE in micronodules from sediments within bioproductive zones is related to increase of influence of diagenetic processes in sediments as a response to the growth of size of micronodules. Distinctions in chemical composition of micronodules and nodules are related to their interaction with associated sediments. Micronodules grow in sediments using hydrogenous ferromanganese oxyhydroxides. As they grow, micronodules are enriched in labile fraction of sediments reworked during diagenesis. Sources of material of ferromanganese nodules are governed by their formation at the water bottom interface. Their upper part is formed by direct settling of iron oxyhydroxides from bottom water, whereas the lower part is accumulated due to diagenetic processes in sediments. Differences of REE compositions in ferromanganese deposits are caused by the reduction of manganese during diagenesis and its separation from iron. Iron oxyhydroxides form a sorption complex due to sorption of phosphate-ion from bottom and pore waters. Sorption of phosphate-ion results in additional sorption of REE.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 13.464167 * Median Longitude: -130.477750 * South-bound Latitude: 13.448667 * West-bound Longitude: -132.904833 * North-bound Latitude: 13.479667 * East-bound Longitude: -128.050667
Event(s):
DM41-3911-76 * Latitude: 13.448667 * Longitude: -132.904833 * Elevation: -4900.0 m * Location: Pacific Ocean * Campaign: DM41 * Basis: Dmitry Mendeleev * Method/Device: Multiple investigations (MULT)
DM41-3915 * Latitude: 13.479667 * Longitude: -128.050667 * Elevation: -4580.0 m * Location: Pacific Ocean * Campaign: DM41 * Basis: Dmitry Mendeleev * Method/Device: Multiple investigations (MULT)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
Download Data
Datasets listed in this publication series
- Dubinin, AV; Sval'nov, VN (2003): (Table 1) Contents of rare earth and other chemical elements in Fe-Mn micronodules, nodules and bottom sediments at Station DM41-3911-76. https://doi.org/10.1594/PANGAEA.783871
- Dubinin, AV; Sval'nov, VN (2003): (Table 2) Contents and speciations of rare earth and other chemical elements in Fe-Mn micronodules, nodules, and bottom sediments at Station DM41-3915. https://doi.org/10.1594/PANGAEA.783873