Dubinin, Alexander V; Sval'nov, Vyacheslav N (2000): Rare earth and other chemical element contents and partitions in bottom sediments, micronodules, and nodules from the bioproductive zone of the Pacific Ocean [dataset publication series]. P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences, Moscow, PANGAEA, https://doi.org/10.1594/PANGAEA.783121, Supplement to: Dubinin, AV; Sval'nov, VN (2000): Geochemistry of rare earth elements in micro- and macronodules from the Pacific bioproductive zone. Translated from Litologiya i Poleznye Iskopaemye, 2000, 1, 25-39, Lithology and Mineral Resources, 35(1), 19-31, https://doi.org/10.1007/BF02788282
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Abstract:
Concentrations and compositions of rare earth elements (REE) in three micronodule fractions (50-250, 250-500, and >500 ?m), coexisting macronodules, and host sediments were studied. Samples were collected at three sites (Guatemala Basin, Peru Basin, and northern equatorial Pacific) located in elevated bioproductivity zones of surface waters. Influence of micronodule size is dominant for REE compositions and subordinate for REE concentrations. For example, Ce concentration inversely correlates with micronodule size and drops to the lowest value in macronodules and host sediments. Decrease of Ce concentration is generally accompanied by Mn/Fe increase in micro- and macronodules. Hence, the role of diagenetic source of material directly correlates with micronodule sizes. Contribution of the diagenetic source is maximal for macronodules. REE composition distinctions for micronodules and macronodules can be attributed to variations of hydrogenic iron oxyhydroxides and diagenetic (hydrothermal) iron hydroxophosphates that are the major REE carriers in ferromanganese ore deposits. Relationship and general trend in chemistry of coexisting macronodules suggest that they can represent products of the initial stage of nodule formation.
Project(s):
Archive of Ocean Data (ARCOD)
Coverage:
Median Latitude: 1.289504 * Median Longitude: -104.456228 * South-bound Latitude: -13.250000 * West-bound Longitude: -120.478300 * North-bound Latitude: 7.680000 * East-bound Longitude: -86.000000
Event(s):
AKO26-56 * Latitude: -13.250000 * Longitude: -86.000000 * Elevation: -4600.0 m * Campaign: AKO_1970-1982_USSR * Basis: Akademik Korolev * Method/Device: Box corer (BC)
DM41-3834 * Latitude: 7.680000 * Longitude: -120.478300 * Elevation: -3850.0 m * Campaign: DM41 * Basis: Dmitry Mendeleev
DM41-3874 * Latitude: 6.503300 * Longitude: -92.782500 * Elevation: -3610.0 m * Campaign: DM41 * Basis: Dmitry Mendeleev * Method/Device: Okean Grab (OKEAN)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
5 datasets
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Datasets listed in this publication series
- Dubinin, AV; Sval'nov, VN (2000): (Table 1) Charcteristics of Pacific bottom sediments from the bioproductive zone and distribution of micronodule size fractions in these sediments. https://doi.org/10.1594/PANGAEA.783111
- Dubinin, AV; Sval'nov, VN (2000): (Table 2) Composition of bottom sediment, a nodule, and micronodules from Station DM41-3874 before and after treatment with 1M NH2OHxHCl + 25% CH3COOH. https://doi.org/10.1594/PANGAEA.783112
- Dubinin, AV; Sval'nov, VN (2000): (Table 3) Composition of bottom sediment, a nodule, and micronodules from Station AKO26-56 before and after treatment with 1M NH2OHxHCl + 25% CH3COOH. https://doi.org/10.1594/PANGAEA.783115
- Dubinin, AV; Sval'nov, VN (2000): (Table 4) Composition of bottom sediments from Station DM41-3834 before and after treatment with 1M NH2OHxHCl + 25% CH3COOH. https://doi.org/10.1594/PANGAEA.783116
- Dubinin, AV; Sval'nov, VN (2000): (Table 5) Composition of different size fraction micronodules from Station DM41-3834 before and after treatment with 1M NH2OHxHCl + 25% CH3COOH. https://doi.org/10.1594/PANGAEA.783120