Atypical ferromanganese micronodules from middle fan-valley system, Bay of Bengal

Atypical ferromanganese micronodules from middle fan-valley system, Bay of Bengal

Ferromanganese micronodules having botryoidal and spheroidal morphogroups have been observed over a 0.22 million km2 area from the middle fan region of the Bay of Bengal. The bulk micronodules have 26.26% Mn, 1.02% Fe, 1.82% Ca, 0.12% Ni, 0.14% Zn and 0.08% Cu. Their Mn/Fe ratio (25.74) is much high...

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Veröffentlicht in:Current science (Bangalore) 1994-09, Vol.67 (6), p.462-465
Hauptverfasser: Chauhan, Onkar S., Gujar, A. R., Rao, Ch. M.
Format: Artikel
Sprache:eng
Schlagworte:
Chemical analysis
Diagenetic processes
Electrons
Minerals
Nodules
Oceanography
RESEARCH COMMUNICATIONS
Sediments
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Zusammenfassung:Ferromanganese micronodules having botryoidal and spheroidal morphogroups have been observed over a 0.22 million km2 area from the middle fan region of the Bay of Bengal. The bulk micronodules have 26.26% Mn, 1.02% Fe, 1.82% Ca, 0.12% Ni, 0.14% Zn and 0.08% Cu. Their Mn/Fe ratio (25.74) is much higher than the world average. Based on the results of the present study, we suggest that early diagenesis may be the contributory process for their formation.
ISSN:0011-3891