(Table 1, page 24), Geochemical cmposition of nodules and crust from the Indain Ocean recovered from R/V Marion Dufresne expeditions
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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
1979
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| _version_ | 1867170988011028480 |
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| author | Leclaire, Lucien Perseil, E A |
| author_facet | Leclaire, Lucien Perseil, E A |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Mineralogical analysis of manganese nodules and crusts collected from Indian ocean aboard Marion Dufresne points to a depth and regional control upon the manganese oxide association: vernadite - birnessite and vernadite - todorokite. Moreover, progressive changes in the vernadite/birnessite ratio as a function of time is clearly seen. Magnetite and titano-magnetite in quantities similar to those of framboidal pyrite in manganese nodules are outlined for the first time. Study of the distribution of metals (Mn, Fe, Ni, Cu, Co) shows a strong latitudinal and regional dependence that may be connected to high productivity zones and to bottom water properties. The problem of mineralogical control on the chemical composition is approached. Finally, it results that any interpretations taking into account all these data haveway to give to the variability of sea-water properties (pH, oxygenation, motions) the prominent control upon manganese nodules composition. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_855460 |
| institution | PANGAEA |
| language | en |
| publishDate | 1979 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | (Table 1, page 24), Geochemical cmposition of nodules and crust from the Indain Ocean recovered from R/V Marion Dufresne expeditions Leclaire, Lucien Perseil, E A Aluminium; AT760004; AT760005; AT760007; AT760008; AT760010; AT760011; Calcium; Cobalt; Copper; DEPTH, sediment/rock; Description; DR760013; DR760014; DR760015; DR770019; Dredge; DRG; Elevation of event; Event label; Grab; GRAB; Identification; Indian Ocean; Insoluble residue; Iron; Latitude of event; Lead; Longitude of event; Magnesium; Manganese; Marion Dufresne (1972); MD00; MD 00-45-DR; MD06; MD 06-27-DR; MD 06-28-DR; MD 06-29; MD 06-30-DR; MD 06-32-DR; MD 06-33-DR; MD 06-35-DR; MD 06-36-DR; MD09; MD09-06B; MD09-12B; MD09-21B; MD09-23B; MD09-26; MD09-27; MD09-34C; MD09-36A; MD09-40B; MD09-41B; MD14; MD14-02CX; MD14-03CX; MD14-05CX; MD14-07CX; MD14-08CX; MD14-27CX; MD14-2A; MD14-2C; MD14-35A; MD14-5B; MD-AT770017; MD-AT770018; MD-DR730004; MD-DR750006; MD-DR750007; MD-DR750008; MD-DR750009; MD-DR750010; MD-DR750011; MD-DR750012; MD-DR770016; MD-DS750001; NEMROD; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; NOSICAA; OSIRIS I; PC; Piston corer; PL770002 (EL 2-6); PL770003 (EL 6-11); PL770004 (EL 12-18); PL770005 (EL 19-28); PL770006 (EL 29-37); PL770007 (EL 48-56); PS760109; Sample code/label; SESAM; Silicon dioxide; Wet chemistry; Zinc Mineralogical analysis of manganese nodules and crusts collected from Indian ocean aboard Marion Dufresne points to a depth and regional control upon the manganese oxide association: vernadite - birnessite and vernadite - todorokite. Moreover, progressive changes in the vernadite/birnessite ratio as a function of time is clearly seen. Magnetite and titano-magnetite in quantities similar to those of framboidal pyrite in manganese nodules are outlined for the first time. Study of the distribution of metals (Mn, Fe, Ni, Cu, Co) shows a strong latitudinal and regional dependence that may be connected to high productivity zones and to bottom water properties. The problem of mineralogical control on the chemical composition is approached. Finally, it results that any interpretations taking into account all these data haveway to give to the variability of sea-water properties (pH, oxygenation, motions) the prominent control upon manganese nodules composition. |
| title | (Table 1, page 24), Geochemical cmposition of nodules and crust from the Indain Ocean recovered from R/V Marion Dufresne expeditions |
| topic | Aluminium; AT760004; AT760005; AT760007; AT760008; AT760010; AT760011; Calcium; Cobalt; Copper; DEPTH, sediment/rock; Description; DR760013; DR760014; DR760015; DR770019; Dredge; DRG; Elevation of event; Event label; Grab; GRAB; Identification; Indian Ocean; Insoluble residue; Iron; Latitude of event; Lead; Longitude of event; Magnesium; Manganese; Marion Dufresne (1972); MD00; MD 00-45-DR; MD06; MD 06-27-DR; MD 06-28-DR; MD 06-29; MD 06-30-DR; MD 06-32-DR; MD 06-33-DR; MD 06-35-DR; MD 06-36-DR; MD09; MD09-06B; MD09-12B; MD09-21B; MD09-23B; MD09-26; MD09-27; MD09-34C; MD09-36A; MD09-40B; MD09-41B; MD14; MD14-02CX; MD14-03CX; MD14-05CX; MD14-07CX; MD14-08CX; MD14-27CX; MD14-2A; MD14-2C; MD14-35A; MD14-5B; MD-AT770017; MD-AT770018; MD-DR730004; MD-DR750006; MD-DR750007; MD-DR750008; MD-DR750009; MD-DR750010; MD-DR750011; MD-DR750012; MD-DR770016; MD-DS750001; NEMROD; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; NOSICAA; OSIRIS I; PC; Piston corer; PL770002 (EL 2-6); PL770003 (EL 6-11); PL770004 (EL 12-18); PL770005 (EL 19-28); PL770006 (EL 29-37); PL770007 (EL 48-56); PS760109; Sample code/label; SESAM; Silicon dioxide; Wet chemistry; Zinc |
| url | https://doi.org/10.1594/PANGAEA.855460 |